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1) In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because _________________? a. The difference frequency is closer to oscillator frequency b. Lower frequencies are easier to amplify c. Only the difference frequency can be modulated d. None of the above
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2) In a TRF radio receiver, the RF and detection stages are tuned to______________? a. Radio frequency b. IF c. Audio frequency d. None of the above
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3) In the above question, what is the power in sidebands? a. 8 kW b. 6 kW c. 06 kW d. 9 kW
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4) In TV transmission, sound signal is ______________modulated? a. Amplitude b. Frequency c. Phase d. None of the above
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5) The diode detector in an AM radio receiver is usually found _____________? a. Before the first RF stage b. After the first RF stage c. After several stages of amplification d. None of the above
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6) In the above question, what is the power in sidebands ? a. 8 kW b. 6 kW c. 06 kW d. 9 kW
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7) Modulation refers to a low-frequency signal controlling the ________________? a. Amplitude of the carrier b. Frequency of the carrier c. Phase of the carrier d. May be any of the above
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8) The major advantage of FM over AM is__________________? a. Reception is less noisy b. Higher carrier frequency c. Smaller bandwidth d. Small frequency deviation
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9) Superhertodyne principle refers to_________________? a. Using a large number of amplifier stages b. Using a push-pull circuit c. Obtaining lower fixed intermediate frequency d. None of the above
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10) The superhetrodyne principle provides selectivity at ______________stage? a. RF b. IF c. audio d. Before RF
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