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\nAnswer Options\n\nA) Switching amplifiers operate at higher voltages\nB) The switching device is at saturation or cutoff most of the time\nC) Line…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":6,"like_count":1,"has_summary":false,"last_poster_username":"Richard_Kroeger","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":20,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E8A01 - What technique shows that a square wave is made up of a sine wave and its odd harmonics?","id":405,"title":"E8A01 - What technique shows that a square wave is made up of a sine wave and its odd harmonics?","slug":"e8a01-what-technique-shows-that-a-square-wave-is-made-up-of-a-sine-wave-and-its-odd-harmonics","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2025-12-15T18:09:32.570Z","last_posted_at":"2026-01-24T19:31:56.475Z","bumped":true,"bumped_at":"2026-01-24T19:31:56.475Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat technique shows that a square wave is made up of a sine wave and its odd harmonics? \nAnswer Options\n\nA) Fourier analysis\nB) Vector analysis\nC) Numerical analysis\nD) Differential analysis\n\nCorrect Answer: A \n…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":3,"like_count":1,"has_summary":false,"last_poster_username":"Richard_Kroeger","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":20,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E2A13 - Which of the following techniques is used by digital satellites to relay messages?","id":1008,"title":"E2A13 - Which of the following techniques is used by digital satellites to relay messages?","slug":"e2a13-which-of-the-following-techniques-is-used-by-digital-satellites-to-relay-messages","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2025-12-15T19:00:40.680Z","last_posted_at":"2026-01-02T23:56:54.447Z","bumped":true,"bumped_at":"2026-01-02T23:56:54.447Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following techniques is used by digital satellites to relay messages? \nAnswer Options\n\nA) Digipeating\nB) Store-and-forward\nC) Multisatellite relaying\nD) Node hopping\n\nCorrect Answer: B \n\nExplanation\n…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":10,"like_count":0,"has_summary":false,"last_poster_username":"mcdanlj","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E6D07 - What is the current that flows in the primary winding of a transformer when there is no load on the secondary winding?","id":1261,"title":"E6D07 - What is the current that flows in the primary winding of a transformer when there is no load on the secondary winding?","slug":"e6d07-what-is-the-current-that-flows-in-the-primary-winding-of-a-transformer-when-there-is-no-load-on-the-secondary-winding","posts_count":2,"reply_count":0,"highest_post_number":2,"image_url":null,"created_at":"2025-12-31T21:28:22.082Z","last_posted_at":"2026-01-02T23:55:39.466Z","bumped":true,"bumped_at":"2026-01-02T23:55:39.466Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the current that flows in the primary winding of a transformer when there is no load on the secondary winding? \nAnswer Options\n\nA) Stabilizing current\nB) Direct current\nC) Excitation current\nD) Magnetizi…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":6,"like_count":0,"has_summary":false,"last_poster_username":"mcdanlj","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H13 - Which of the following is a technique for providing highly accurate and stable oscillators needed for microwave transmission and reception?","id":1435,"title":"E7H13 - Which of the following is a technique for providing highly accurate and stable oscillators needed for microwave transmission and reception?","slug":"e7h13-which-of-the-following-is-a-technique-for-providing-highly-accurate-and-stable-oscillators-needed-for-microwave-transmission-and-reception","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:54:19.851Z","last_posted_at":"2026-01-02T19:54:19.903Z","bumped":true,"bumped_at":"2026-01-02T19:54:19.903Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following is a technique for providing highly accurate and stable oscillators needed for microwave transmission and reception? \nAnswer Options\n\nA) Use a GPS signal reference\nB) Use a rubidium stabil…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":2,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H12 - Which of the following ensures that a crystal oscillator operates on the frequency specified by the crystal manufacturer?","id":1434,"title":"E7H12 - Which of the following ensures that a crystal oscillator operates on the frequency specified by the crystal manufacturer?","slug":"e7h12-which-of-the-following-ensures-that-a-crystal-oscillator-operates-on-the-frequency-specified-by-the-crystal-manufacturer","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:54:19.448Z","last_posted_at":"2026-01-02T19:54:19.500Z","bumped":true,"bumped_at":"2026-01-02T19:54:19.500Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following ensures that a crystal oscillator operates on the frequency specified by the crystal manufacturer? \nAnswer Options\n\nA) Provide the crystal with a specified parallel inductance\nB) Provide t…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H11 - What are the major spectral impurity components of direct digital synthesizers?","id":1433,"title":"E7H11 - What are the major spectral impurity components of direct digital synthesizers?","slug":"e7h11-what-are-the-major-spectral-impurity-components-of-direct-digital-synthesizers","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:54:19.038Z","last_posted_at":"2026-01-02T19:54:19.087Z","bumped":true,"bumped_at":"2026-01-02T19:54:19.087Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat are the major spectral impurity components of direct digital synthesizers? \nAnswer Options\n\nA) Broadband noise\nB) Digital conversion noise\nC) Spurious signals at discrete frequencies\nD) Harmonics of the loc…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H10 - What information is contained in the lookup table of a direct digital synthesizer (DDS)?","id":1432,"title":"E7H10 - What information is contained in the lookup table of a direct digital synthesizer (DDS)?","slug":"e7h10-what-information-is-contained-in-the-lookup-table-of-a-direct-digital-synthesizer-dds","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:54:18.628Z","last_posted_at":"2026-01-02T19:54:18.677Z","bumped":true,"bumped_at":"2026-01-02T19:54:18.677Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat information is contained in the lookup table of a direct digital synthesizer (DDS)? \nAnswer Options\n\nA) The phase relationship between a reference oscillator and the output waveform\nB) Amplitude values that…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":2,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H09 - What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital-to-analog converter, and a low-pass anti-alias filter?","id":1431,"title":"E7H09 - What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital-to-analog converter, and a low-pass anti-alias filter?","slug":"e7h09-what-type-of-frequency-synthesizer-circuit-uses-a-phase-accumulator-lookup-table-digital-to-analog-converter-and-a-low-pass-anti-alias-filter","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:54:18.193Z","last_posted_at":"2026-01-02T19:54:18.256Z","bumped":true,"bumped_at":"2026-01-02T19:54:18.256Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital-to-analog converter, and a low-pass anti-alias filter? \nAnswer Options\n\nA) A direct digital synthesizer\nB) A hybrid synt…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H08 - Which of the following components can be used to reduce thermal drift in crystal oscillators?","id":1430,"title":"E7H08 - Which of the following components can be used to reduce thermal drift in crystal oscillators?","slug":"e7h08-which-of-the-following-components-can-be-used-to-reduce-thermal-drift-in-crystal-oscillators","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:54:17.749Z","last_posted_at":"2026-01-02T19:54:17.800Z","bumped":true,"bumped_at":"2026-01-02T19:54:17.800Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following components can be used to reduce thermal drift in crystal oscillators? \nAnswer Options\n\nA) NPO capacitors\nB) Toroidal inductors\nC) Wirewound resistors\nD) Non-inductive resistors\n\nCorrect A…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H07 - How can an oscillator’s microphonic responses be reduced?","id":1429,"title":"E7H07 - How can an oscillator's microphonic responses be reduced?","slug":"e7h07-how-can-an-oscillators-microphonic-responses-be-reduced","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:32.062Z","last_posted_at":"2026-01-02T19:53:32.113Z","bumped":true,"bumped_at":"2026-01-02T19:53:32.113Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nHow can an oscillator’s microphonic responses be reduced? \nAnswer Options\n\nA) Use NPO capacitors\nB) Reduce noise on the oscillator’s power supply\nC) Increase the gain\nD) Mechanically isolate the oscillator circu…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H06 - Which of these functions can be performed by a phase-locked loop?","id":1428,"title":"E7H06 - Which of these functions can be performed by a phase-locked loop?","slug":"e7h06-which-of-these-functions-can-be-performed-by-a-phase-locked-loop","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:31.641Z","last_posted_at":"2026-01-02T19:53:31.699Z","bumped":true,"bumped_at":"2026-01-02T19:53:31.699Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of these functions can be performed by a phase-locked loop? \nAnswer Options\n\nA) Wide-band AF and RF power amplification\nB) Frequency synthesis and FM demodulation\nC) Photovoltaic conversion and optical cou…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H05 - How is positive feedback supplied in a Pierce oscillator?","id":1427,"title":"E7H05 - How is positive feedback supplied in a Pierce oscillator?","slug":"e7h05-how-is-positive-feedback-supplied-in-a-pierce-oscillator","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:31.222Z","last_posted_at":"2026-01-02T19:53:31.275Z","bumped":true,"bumped_at":"2026-01-02T19:53:31.275Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nHow is positive feedback supplied in a Pierce oscillator? \nAnswer Options\n\nA) Through a tapped coil\nB) Through link coupling\nC) Through a neutralizing capacitor\nD) Through a quartz crystal\n\nCorrect Answer: D \n\nE…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H04 - How is positive feedback supplied in a Colpitts oscillator?","id":1426,"title":"E7H04 - How is positive feedback supplied in a Colpitts oscillator?","slug":"e7h04-how-is-positive-feedback-supplied-in-a-colpitts-oscillator","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:30.810Z","last_posted_at":"2026-01-02T19:53:30.865Z","bumped":true,"bumped_at":"2026-01-02T19:53:30.865Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nHow is positive feedback supplied in a Colpitts oscillator? \nAnswer Options\n\nA) Through a tapped coil\nB) Through link coupling\nC) Through a capacitive divider\nD) Through a neutralizing capacitor\n\nCorrect Answer:…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H03 - What is a phase-locked loop?","id":1425,"title":"E7H03 - What is a phase-locked loop?","slug":"e7h03-what-is-a-phase-locked-loop","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:29.170Z","last_posted_at":"2026-01-02T19:53:29.222Z","bumped":true,"bumped_at":"2026-01-02T19:53:29.222Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is a phase-locked loop? \nAnswer Options\n\nA) An electronic servo loop consisting of a ratio detector, reactance modulator, and voltage-controlled oscillator\nB) An electronic circuit also known as a monostabl…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H02 - What is a microphonic?","id":1424,"title":"E7H02 - What is a microphonic?","slug":"e7h02-what-is-a-microphonic","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:28.740Z","last_posted_at":"2026-01-02T19:53:28.795Z","bumped":true,"bumped_at":"2026-01-02T19:53:28.795Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is a microphonic? \nAnswer Options\n\nA) An IC used for amplifying microphone signals\nB) Distortion caused by RF pickup on the microphone cable\nC) Changes in oscillator frequency caused by mechanical vibration\n…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7H01 - What are three common oscillator circuits?","id":1423,"title":"E7H01 - What are three common oscillator circuits?","slug":"e7h01-what-are-three-common-oscillator-circuits","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:28.313Z","last_posted_at":"2026-01-02T19:53:28.363Z","bumped":true,"bumped_at":"2026-01-02T19:53:28.363Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat are three common oscillator circuits? \nAnswer Options\n\nA) Taft, Pierce, and negative feedback\nB) Pierce, Fenner, and Beane\nC) Taft, Hartley, and Pierce\nD) Colpitts, Hartley, and Pierce\n\nCorrect Answer: D \n\nE…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G12 - What is an operational amplifier?","id":1422,"title":"E7G12 - What is an operational amplifier?","slug":"e7g12-what-is-an-operational-amplifier","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:27.905Z","last_posted_at":"2026-01-02T19:53:27.957Z","bumped":true,"bumped_at":"2026-01-02T19:53:27.957Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is an operational amplifier? \nAnswer Options\n\nA) A high-gain, direct-coupled differential amplifier with very high input impedance and very low output impedance\nB) A digital audio amplifier whose characteri…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G11 - What absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 3,300 ohms and RF is 47 kilohms?","id":1421,"title":"E7G11 - What absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 3,300 ohms and RF is 47 kilohms?","slug":"e7g11-what-absolute-voltage-gain-can-be-expected-from-the-circuit-in-figure-e7-3-when-r1-is-3-300-ohms-and-rf-is-47-kilohms","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":"https://forum.openhamprep.com/uploads/default/original/1X/3ee24bb7bfac94f54f6c532b9c61fcad35845035.png","created_at":"2026-01-02T19:53:27.486Z","last_posted_at":"2026-01-02T19:53:27.540Z","bumped":true,"bumped_at":"2026-01-02T19:53:27.540Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 3,300 ohms and RF is 47 kilohms? \n  \nAnswer Options\n\nA) 28\nB) 14\nC) 7\nD) 0.07\n\nCorrect Answer: B \n\nExplanation\nThe voltage ga…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":1,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G09 - What will be the output voltage of the circuit shown in Figure E7-3 if R1 is 1,000 ohms, RF is 10,000 ohms, and 0.23 volts DC is applied to the input?","id":1420,"title":"E7G09 - What will be the output voltage of the circuit shown in Figure E7-3 if R1 is 1,000 ohms, RF is 10,000 ohms, and 0.23 volts DC is applied to the input?","slug":"e7g09-what-will-be-the-output-voltage-of-the-circuit-shown-in-figure-e7-3-if-r1-is-1-000-ohms-rf-is-10-000-ohms-and-0-23-volts-dc-is-applied-to-the-input","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":"https://forum.openhamprep.com/uploads/default/original/1X/3ee24bb7bfac94f54f6c532b9c61fcad35845035.png","created_at":"2026-01-02T19:53:27.046Z","last_posted_at":"2026-01-02T19:53:27.095Z","bumped":true,"bumped_at":"2026-01-02T19:53:27.095Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat will be the output voltage of the circuit shown in Figure E7-3 if R1 is 1,000 ohms, RF is 10,000 ohms, and 0.23 volts DC is applied to the input? \n  \nAnswer Options\n\nA) 0.23 volts\nB) 2.3 volts\nC) -0.23 volt…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":2,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G08 - How does the gain of an ideal operational amplifier vary with frequency?","id":1419,"title":"E7G08 - How does the gain of an ideal operational amplifier vary with frequency?","slug":"e7g08-how-does-the-gain-of-an-ideal-operational-amplifier-vary-with-frequency","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:26.623Z","last_posted_at":"2026-01-02T19:53:26.686Z","bumped":true,"bumped_at":"2026-01-02T19:53:26.686Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nHow does the gain of an ideal operational amplifier vary with frequency? \nAnswer Options\n\nA) It increases linearly with increasing frequency\nB) It decreases linearly with increasing frequency\nC) It decreases log…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G07 - What voltage gain can be expected from the circuit in Figure E7-3 when R1 is 10 ohms and RF is 470 ohms?","id":1418,"title":"E7G07 - What voltage gain can be expected from the circuit in Figure E7-3 when R1 is 10 ohms and RF is 470 ohms?","slug":"e7g07-what-voltage-gain-can-be-expected-from-the-circuit-in-figure-e7-3-when-r1-is-10-ohms-and-rf-is-470-ohms","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":"https://forum.openhamprep.com/uploads/default/original/1X/3ee24bb7bfac94f54f6c532b9c61fcad35845035.png","created_at":"2026-01-02T19:53:26.151Z","last_posted_at":"2026-01-02T19:53:26.215Z","bumped":true,"bumped_at":"2026-01-02T19:53:26.215Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat voltage gain can be expected from the circuit in Figure E7-3 when R1 is 10 ohms and RF is 470 ohms? \n  \nAnswer Options\n\nA) 0.21\nB) 4700\nC) 47\nD) 24\n\nCorrect Answer: C \n\nExplanation\nFigure E7-3  shows an inv…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":2,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G06 - What is the gain-bandwidth of an operational amplifier?","id":1417,"title":"E7G06 - What is the gain-bandwidth of an operational amplifier?","slug":"e7g06-what-is-the-gain-bandwidth-of-an-operational-amplifier","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:25.723Z","last_posted_at":"2026-01-02T19:53:25.782Z","bumped":true,"bumped_at":"2026-01-02T19:53:25.782Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the gain-bandwidth of an operational amplifier? \nAnswer Options\n\nA) The maximum frequency for a filter circuit using that type of amplifier\nB) The frequency at which the open-loop gain of the amplifier e…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G05 - How can unwanted ringing and audio instability be prevented in an op-amp audio filter?","id":1416,"title":"E7G05 - How can unwanted ringing and audio instability be prevented in an op-amp audio filter?","slug":"e7g05-how-can-unwanted-ringing-and-audio-instability-be-prevented-in-an-op-amp-audio-filter","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:25.324Z","last_posted_at":"2026-01-02T19:53:25.371Z","bumped":true,"bumped_at":"2026-01-02T19:53:25.371Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nHow can unwanted ringing and audio instability be prevented in an op-amp audio filter? \nAnswer Options\n\nA) Restrict both gain and Q\nB) Restrict gain but increase Q\nC) Restrict Q but increase gain\nD) Increase bot…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G04 - What is meant by the term “op-amp input offset voltage”?","id":1415,"title":"E7G04 - What is meant by the term \"op-amp input offset voltage\"?","slug":"e7g04-what-is-meant-by-the-term-op-amp-input-offset-voltage","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:24.929Z","last_posted_at":"2026-01-02T19:53:24.978Z","bumped":true,"bumped_at":"2026-01-02T19:53:24.978Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is meant by the term “op-amp input offset voltage”? \nAnswer Options\n\nA) The output voltage of the op-amp minus its input voltage\nB) The difference between the output voltage of the op-amp and the input volt…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":1,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G03 - What is the typical input impedance of an op-amp?","id":1414,"title":"E7G03 - What is the typical input impedance of an op-amp?","slug":"e7g03-what-is-the-typical-input-impedance-of-an-op-amp","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:24.468Z","last_posted_at":"2026-01-02T19:53:24.525Z","bumped":true,"bumped_at":"2026-01-02T19:53:24.525Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the typical input impedance of an op-amp? \nAnswer Options\n\nA) 100 ohms\nB) 10,000 ohms\nC) Very low\nD) Very high\n\nCorrect Answer: D \n\nExplanation\nAn operational amplifier (\\text{op-amp}) is a differential …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G02 - What is the frequency response of the circuit in E7-3 if a capacitor is added across the feedback resistor?","id":1413,"title":"E7G02 - What is the frequency response of the circuit in E7-3 if a capacitor is added across the feedback resistor?","slug":"e7g02-what-is-the-frequency-response-of-the-circuit-in-e7-3-if-a-capacitor-is-added-across-the-feedback-resistor","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":"https://forum.openhamprep.com/uploads/default/original/1X/3ee24bb7bfac94f54f6c532b9c61fcad35845035.png","created_at":"2026-01-02T19:53:24.051Z","last_posted_at":"2026-01-02T19:53:24.102Z","bumped":true,"bumped_at":"2026-01-02T19:53:24.102Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the frequency response of the circuit in E7-3 if a capacitor is added across the feedback resistor? \n  \nAnswer Options\n\nA) High-pass filter\nB) Low-pass filter\nC) Band-pass filter\nD) Notch filter\n\nCorrect…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":1,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7G01 - What is the typical output impedance of an op-amp?","id":1412,"title":"E7G01 - What is the typical output impedance of an op-amp?","slug":"e7g01-what-is-the-typical-output-impedance-of-an-op-amp","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:23.580Z","last_posted_at":"2026-01-02T19:53:23.649Z","bumped":true,"bumped_at":"2026-01-02T19:53:23.649Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the typical output impedance of an op-amp? \nAnswer Options\n\nA) Very low\nB) Very high\nC) 100 ohms\nD) 10,000 ohms\n\nCorrect Answer: A \n\nExplanation\nAn operational amplifier (\\text{op-amp}) is designed to be…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"E7F14 - Which of the following would allow a digital signal processing filter to create a sharper filter response?","id":1411,"title":"E7F14 - Which of the following would allow a digital signal processing filter to create a sharper filter response?","slug":"e7f14-which-of-the-following-would-allow-a-digital-signal-processing-filter-to-create-a-sharper-filter-response","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2026-01-02T19:53:23.126Z","last_posted_at":"2026-01-02T19:53:23.180Z","bumped":true,"bumped_at":"2026-01-02T19:53:23.180Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following would allow a digital signal processing filter to create a sharper filter response? \nAnswer Options\n\nA) Higher data rate\nB) More taps\nC) Lower Q\nD) Double-precision math routines\n\nCorrect …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":0,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":9,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]}]}}