Q.1
The time taken by the charge carrier to cross from the emitter to the collector is called ________
  • a) miller time
  • b) transit time
  • c) charge time
  • d) relaxing time
Q.2
The person who sent the first radio signal across the atlantic ocean was ________
  • a) Marconi
  • b) Maxwell
  • c) Hertz
  • d) Bell
Q.3
What is the use of bypass capacitor?
  • a) to remove RF from non-RF circuits
  • b) to couple RF around an amplifier
  • c) acts as low pass filter
  • d) acts as high pass filter
Q.4
The ability to change the operating frequency rapidly without a lot of retuning is called ________
  • a) Agility
  • b) VCO
  • c) Mixing
  • d) Filtering
Q.5
A resonant circuit is used in narrowband RF amplifiers.
  • a) True
  • b) False
Q.6
What is the full form of ALC?
  • a) Amplitude Level Control
  • b) Automatic Level Control
  • c) Automatic Limiter Control
  • d) Amplitude Limiter Control
Q.7
In high level amplitude modulation, power in the sidebands comes from _________
  • a) Modulating amplifier
  • b) RF amplifier
  • c) Driver stage
  • d) Carrier
Q.8
To generate a SSB signal ________
  • a) Full carrier AM is required
  • b) DSB-SC is required
  • c) Quadrature signal is required
  • d) High frequency signal is needed
Q.9
Which statement is true about direct FM modulator?
  • a) it integrates the modulating signal
  • b) it differentiates the modulating signal
  • c) varies the frequency of carrier oscillator
  • d) varies the phase of carrier oscillator
Q.10
Which statement is true about indirect FM modulator?
  • a) it integrates the modulating signal
  • b) it differentiates the modulating signal
  • c) varies the frequency of carrier oscillator
  • d) varies the phase of carrier oscillator
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