☰ Analog Electronics (Electrical Engineering) - MCQs

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Q25.

What is the effect of cascading amplifier stages?

  • A. to increase the voltage gain and increase the bandwidth
  • B. to increase the voltage gain and reduced the bandwidth
  • C. to decrease the voltage gain and increase the bandwidth
  • D. to decrease the voltage gain and reduced the bandwidht
    ✍ Discuss    
Q26.

The miller effect in the contact of common emitter amplifier explains

  • A. an increase in the low frequency cutoff frequency
  • B. an increase in the high frequency cutoff frequency
  • C. a decrease in the low frequency cutoff frequency
  • D. a decrease in the high frequency cutoff frequency
    ✍ Discuss    
Q27.

Presence of America bypass capacitor adversely affects the

  • A. low frequency response
  • B. medium frequency response
  • C. high frequency response
  • D. complete frequency response
    ✍ Discuss    
Q28.

Generally, the gain of transistor falls at high frequencies due to the

  • A. internal capacitance of the device
  • B. coupling capacitor at the input
  • C. skin effect
  • D. coupling capacitor at the load
    ✍ Discuss    
Q29.

Thermal noise in transistor amplifier is also known as

  • A. shot noise
  • B. Schottky noise
  • C. black noise
  • D. Johnson noise
    ✍ Discuss    
Q30.

A good current buffer has

  • A. low input impedance and low output impedance
  • B. low input impedance and high output impedance
  • C. high input impedance and low output impedance
  • D. high input impedance and high output impedance
    ✍ Discuss    
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