Basic Electronics (3110016) MCQs

MCQs of AC Analysis of BJT circuits and small signal amplifier

Showing 81 to 90 out of 120 Questions
6 7 8 9 10 11
81.
A single stage transistor amplifier with collector load RC and emitter resistance RE has a DC load of ________
(a) RC
(b) RC ∥ RE
(c) RC - RE
(d) RC + RE
Answer:

Option (d)

82.
In transistor amplifiers, we generally use _______ capacitors
(a) Electrolytic
(b) Mica
(c) Paper
(d) Air
Answer:

Option (a)

83.
A single stage transistor amplifier with no load sees an AC load of _______
(a) RC + RE
(b) RC
(c) RC ∥ RE
(d) RL - RE
Answer:

Option (b)

84.
The output power of a transistor amplifier is more than the input power because the additional power I supplied by ________
(a) Transistor
(b) Biasing circuit
(c) Collector supply VCC
(d) None of the above
Answer:

Option (c)

85.
A transistor converts _________
(a) DC power into AC power
(b) AC power into DC power
(c) High resistance into low resistance
(d) None of the above
Answer:

Option (a)

86.
A transistor amplifier has high output impedance because ________
(a) Emitter is heavily doped
(b) Collector is reverse bias
(c) Collector is wider than emitter or base
(d) None of the above
Answer:

Option (b)

87.
For highest power gain, one would use _______ configuration
(a) CC
(b) CB
(c) CE
(d) None of the above
Answer:

Option (c)

88.
CC configuration is used for impedance matching because its ________
(a) Input impedance is very high
(b) Input impedance is low
(c) Output impedance is very low
(d) None of the above
Answer:

Option (a)

89.
An emitter follower has a voltage gain that is
(a) Much less than one
(b) Approximately equal to one
(c) Greater than one
(d) Zero
Answer:

Option (b)

90.
The total AC emitter resistance of an emitter follower equals
(a) re'
(b) re
(c) re + re'
(d) RE
Answer:

Option (c)

Showing 81 to 90 out of 120 Questions
6 7 8 9 10 11