☰ Analog Electronics (Electrical Engineering) - MCQs

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Q13.

In a transistor push pull amplifier

  • A. there is no DC present in the output
  • B. there is no distortion in the output
  • C. there is no even harmonics in the output
  • D. there are no odd harmonics in the output
    ✍ Discuss    
Q14.

Crossover distortion behaviour is characteristic of

  • A. class A output stage
  • B. class B output stage
  • C. class AB output stage
  • D. common base output stage
    ✍ Discuss    
Q15.

High power efficiency of the push pull amplifier is due to the fact that

  • A. each transistor conducts on different cycle of the input
  • B. transistors are placed in CE configuration
  • C. there is no quiescent send collector current
  • D. low forward biasing voltage is required
    ✍ Discuss    
Q16.

In an RC coupled amplifier, the voltage gain

  • A. remains almost constant over a range of frequency
  • B. always increases with frequency
  • C. always decreases with frequency
  • D. all of the above
    ✍ Discuss    
Q17.

R-C coupling is proper in low level AF amplifier because it it

  • A. is inexpensive and needs no adjustment
  • B. has better low frequency response
  • C. needs low voltage battery
  • D. provides an output signal in phase with input signal
    ✍ Discuss    
Q18.

Low frequency response for RC coupled amplifier can be improved by

  • A. increasing the value of the coupling capacitor only
  • B. increasing the value of the bypass capacitor and coupling capacitor
  • C. increasing the value of bypass capacitor only
  • D. decreasing the value of the coupling capacitor
    ✍ Discuss    
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