Question 11 : What is the function of radio receiver?
1. to detect and amplify information signal from the carrier
2. to modulate a message signal
3. to produce radio waves
4. to convert one form of energy into other
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Question 12 : What is the use of varacter diode in radio receiver?
1. Demodulation
2. Mixing
3. Multiplexing
4. Tuning
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Question 13 : Process of recovering information signal from received carrier is known as ________
1. Sensitivity
2. Selectivity
3. Demodulation
4. Fidelity
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Question 14 : Which oscillator is used as a local oscillator in radio receiver?
1. Wien-bridge
2. Hartley
3. Crystal
4. Phase Shift
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Question 15 : In a receiver, noise is usually developed at ________
1. Audio stage
2. Receiving antenna
3. RF stage
4. IF stage
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Question 16 : What is Fidelity?
1. Equally amplifies all the signal frequencies at receiver
2. Ability of receiver to select wanted signal from various incoming signal
3. Minimum magnitude of input signal required to produced a specified output
4. Ability to amplify weak signals
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Question 17 : Demodulation is done in ________
1. Channel
2. Receiver
3. Receiving antenna
4. Transducer
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Question 18 : What is Carrier swing?
1. Frequency deviation
2. Width of sideband
3. Instantaneous frequency
4. Total variation in frequency
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Question 19 : What is the role of Amplitude limiter in FM receiver?
1. Filteration
2. Adjust the gain of receiver
3. Amplify a weaker signal
4. Demodulate a signal
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Question 20 : AVC stands for ________
1. Abrupt Voltage Control
2. Audio Voltage Control
3. Automatic Volume Control
4. Automatic Voltage Control
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