Theory_Questions:
1. An
audio amplifier operates in the frequency range of
(A) 0
Hz to 20 Hz
(B)
20 Hz to 2 KHz
(C)
20 Hz to 20 KHz
(D)
Above 20 KHz
Answer:
[C] 20 Hz to 20 KHz
2.
For maximum peak-peak output voltage, the Q-point should be
(A)
Near saturation
(B)
Near cut-off
(C)
At the centre of dc load line
(D)
At the centre of ac load line
Answer:
[D] At the centre of ac load line
3. An
amplifier has two load lines because
(A)
It has ac and dc collector resistances
(B)
It has two equivalent circuits
(C)
Dc acts in way and ac acts in another way
(D)
All the above
Answer:
[D] All the above
4.
Power rating of a transistor can be increased by
(A)
Raising the temperature
(B)
Using a heat sink
(C)
Using a de rating curve
(D)
Operating with no input signal
Answer:
[B] Using a heat sink
5.
Quiescent collector current is same as the
(A)
Dc collector current
(B)
Ac collector current
(C)
Total collector current
(D)
Voltage divider current
Answer:
[A] Dc collector current
6.
For a Q-point closer to cutoff than saturation in CE dc load line,
the clipping is more likely to occur on the
(A)
Positive peak of input voltage
(B)
Negative peak of input voltage
(C)
Negative peak of output voltage
(D)
Negative peak of emitter voltage
Answer:
[B] Negative peak of input voltage
7. If
the Q-point is the middle of the dc load line, clipping will first
occur on the
(A)
Left voltage sing
(B)
Upward current swing
(C)
Negative peak of input voltage
(D)
Positive peak of input voltage
Answer:
[D] Positive peak of input voltage
8.
When the ambient temperature increases, the maximum power rating
(A)
Decreases
(B)
Increases
(C)
Remains the same
(D)
None of the above
Answer:
[A] Decreases
9.
The power gain of an amplifier
(A)
Is same as the voltage gain
(B)
Is smaller than the voltage gain
(C)
Equal to the ration of input power to output power
(D)
Equals the load power
Answer:
[C] Equal to the ration of input power to output power
10.
The instantaneous operating point swings along
(A)
Ac load line
(B)
Dc load line
(C)
Both load lines
(D)
Neither of the load lines
Answer:
[A] Ac load line
Analog Electronic Circuits Laboratory Viva Questions 1
Analog Electronic Circuits Laboratory Viva Questions 2
Analog Electronic Circuits Laboratory Viva Questions 3
Analog Electronic Circuits Laboratory Viva Questions 4
Analog Electronic Circuits Laboratory Viva Questions 5
Analog Electronic Circuits Laboratory Viva Questions 6
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