| 1. | The standard IF value for AM receiver is ? | |
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107 KHz
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455 MHz
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455 KHz
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10.7 MHz
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View Answer
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Report Question| 2. | In a super heterodyne receiver ? | |
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The IF stage has better selectivity than RF stage
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The RF stage has better selectivity than IF stage
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The RG stage has same selectivity than IF stage
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None of the other options
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| 3. | In a super heterodyne receiver, if the intermediate frequency is 10.7 MHz and the carrier frequency is 89.6 MHz, the image frequency is ? | |
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78.9 MHz
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100.3 MHz
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111 MHz
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121 MHz
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| 4. | Which type of capacitor is used in radio receiver for tuning purpose ? | |
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Mica gang
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Trimmer
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Miniature PVC gang
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Ceramic Capacitor
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| 5. | The bandwidth required for baseband signals for FM radio is generally ? | |
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Up to 150 KHz
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0.5 to 1.5 KHz
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0.3 KHz to 3 KHz
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Up to 15 KHz
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| 6. | A squelch circuit in a TV receiver is used to ? | |
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Cut off IF when AGC is maximum
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Cut off audio amplifier when carrier is absent
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Cut off IF when AGC is inoperative
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Cut off brightness circuit when AGC is inoperative
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| 7. | For direct reception of TV signals from a communication satellite the type of antenna required is ? | |
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Horn
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Parabolic
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Chicken mesh
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loop
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| 8. | Maximum value of signal to noise ratio of an 8- bit ADC with an input range of 10 V will be ? | |
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50 dB
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43.8 dB
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48.9 dB
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49.8 dB
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| 9. | Noise figure of an amplifier depends on ? | |
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Bandwidth
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Output power
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Power input
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None of these
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| 10. | The term "white noise" refers to the following ? | |
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A random signal with flat power spectral density
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A random signal generated by beat signal
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A random signal with long range correlation
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All of the above are true
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