Q.1
What we use for impedance matching in RF amplifiers?
  • a) RC coupling
  • b) Transformer coupling
  • c) Direct coupling
  • d) RF coupling
Q.2
Neutralization cancels unwanted feedback by bypassing the feedback to the neutral or ground plane.
  • a) True
  • b) False
Q.3
In a receiver, distortion can occur in ________
  • a) Mixer
  • b) Detector
  • c) IF amplifiers
  • d) Either mixer or detector or IF amplifiers
Q.4
How we limit the response of a receiver to a weak signal?
  • a) by the AGC
  • b) by the noise that is generated in the receiver
  • c) by the dynamic range of the receiver
  • d) by the type of detector circuit being used
Q.5
When aliasing will take place?
  • a) Sampling signals less than Nyquist Rate
  • b) Sampling signals more than Nyquist Rate
  • c) Sampling signals equal to Nyquist Rate
  • d) Sampling signals at a rate which is twice of Nyquist Rate
Q.6
A resonant circuit is a simple form of bandpass filter.
  • a) True
  • b) False
Q.7
Which statement is true for high level amplitude modulation?
  • a) all RF amplifiers are of class A
  • b) all RF amplifiers can be nonlinear
  • c) minimum RF power is required
  • d) maximum RF power is required
Q.8
Which statement is true for low level amplitude modulation?
  • a) all RF amplifiers are of class A
  • b) all RF amplifiers can be linear
  • c) minimum RF power is required
  • d) maximum RF power is required
Q.9
Which two networks can be used for impedance matching?
  • a) pi network and T network
  • b) pi network and bridge network
  • c) bridge network and T network
  • d) pi network and omega network
Q.10
Which statement is true about frequency multipliers?
  • a) they are essentially balanced modulators
  • b) they are essentially class C amplifiers
  • c) they are essentially class AB amplifiers
  • d) they are essentially mixers
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