Exercise: Analog Electronics

Questions for: Analog Electronics

Cross-over distortion behaviour is a characteristic of
A:
class A output stage
B:
class B output stage
C:
class AB output stage
D:
common base output stage
Answer: B
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A transistor will operate in inverted region when
A:
emitter junction is forward biased and collector junction is reverse biased
B:
emitter junction is reverse biased and collector junction is forward biased
C:
emitter junction as well as collector junction are forward biased
D:
emitter junction as well as collector junction are reverse biased
Answer: B
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The advantage of using crystal oscillator is that it
A:
requires low d.c. supply voltage
B:
works at high frequency
C:
gives high output voltage
D:
gives constant frequency of oscillations
Answer: D
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The approximate value of input impedance of CE amplifier with emitter resistance RE is given by
A:
hie + Ai RE
B:
hie + (1 + hfe) RE
C:
hie
D:
(1 + hfe) RE
Answer: C
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Examine the circuit of figure and the following statements
  1. Vs is more than the zener breakdown voltage.
  2. IL = I1 - I2.
  3. Rs is less than zener nominal resistance.
Which of the above statements are correct?
A:
1, 2, 3
B:
1, 2
C:
1 only
D:
2 and 3
Answer: B
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