Question 1 : Which statement is true about indirect FM modulator?
1. it integrates the modulating signal
2. it differentiates the modulating signal
3. varies the frequency of carrier oscillator
4. varies the phase of carrier oscillator
View Answer   Discuss with Members

Question 2 : Which statement is true about direct FM modulator?
1. it integrates the modulating signal
2. it differentiates the modulating signal
3. varies the frequency of carrier oscillator
4. varies the phase of carrier oscillator
View Answer   Discuss with Members

Question 3 : To generate a SSB signal ________
1. Full carrier AM is required
2. DSB-SC is required
3. Quadrature signal is required
4. High frequency signal is needed
View Answer   Discuss with Members

Question 4 : In high level amplitude modulation, power in the sidebands comes from _________
1. Modulating amplifier
2. RF amplifier
3. Driver stage
4. Carrier
View Answer   Discuss with Members

Question 5 : What is the full form of ALC?
1. Amplitude Level Control
2. Automatic Level Control
3. Automatic Limiter Control
4. Amplitude Limiter Control
View Answer   Discuss with Members

Question 6 : A resonant circuit is used in narrowband RF amplifiers.
1. True
2. False
3.
4.
View Answer   Discuss with Members

Question 7 : The ability to change the operating frequency rapidly without a lot of retuning is called ________
1. Agility
2. VCO
3. Mixing
4. Filtering
View Answer   Discuss with Members

Question 8 : What is the use of bypass capacitor?
1. to remove RF from non-RF circuits
2. to couple RF around an amplifier
3. acts as low pass filter
4. acts as high pass filter
View Answer   Discuss with Members

Question 9 : The person who sent the first radio signal across the atlantic ocean was ________
1. Marconi
2. Maxwell
3. Hertz
4. Bell
View Answer   Discuss with Members

Question 10 : The time taken by the charge carrier to cross from the emitter to the collector is called ________
1. miller time
2. transit time
3. charge time
4. relaxing time
View Answer   Discuss with Members