Electronics and Communication Engineering - Analog Electronics

6. 

In a self bias circuit for CE amplifier, the base voltage is

A. equal to supply voltage
B. more than supply voltage
C. equal to or more than supply voltage
D. less than supply voltage

Answer: Option D

Explanation:

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7. 

A push pull amplifier is a

A. power amplifier
B. voltage amplifier
C. current amplifier
D. both power and current amplifier

Answer: Option A

Explanation:

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8. 

An engineer designs an amplifier to have a voltage gain of 60, but when constructed it only had a gain of 50. How much feedback should be used to provide the desired level?

A. +0.03%
B. +0.33%
C. +1.30%
D. +3.3%

Answer: Option B

Explanation:

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9. 

Which of the following oscillator circuits uses three capacitors in the phase shifting network?

A. Hartley
B. Clapp
C. Colpitt's
D. Both (b) and (c)

Answer: Option B

Explanation:

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10. 

Consider the following rectifier circuits :

  1. half-wave rectifier without filter
  2. full-wave rectifier without filter
  3. full-wave rectifier with series inductance filter
  4. full-wave rectifier with capacitance filter.
The sequence of these rectifier circuits in decreasing order of their ripple factor is

A. 1, 2, 3, 4
B. 3, 4, 1, 2
C. 1, 4, 3, 2
D. 3, 2, 1, 4

Answer: Option A

Explanation:

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