Power Amplifiers - General Questions Online Exam Quiz
Power Amplifiers - General Questions GK Quiz. Question and Answers related to Power Amplifiers - General Questions. MCQ (Multiple Choice Questions with answers about Power Amplifiers - General Questions
This is an example of the output swing for a class ________ amplifier.
Options
A : A
B : B
C : AB
D : C
Calculate V B2 .
Options
A : 0 V
B : 0.7 V
C : 9.3 V
D : 10.7 V
Class B operation is provided when the dc bias leaves the transistor biased just off, the transistor turning on when the ac signal is applied.
Options
A : True
B : False
C : -
D : -
The main features of a large-signal amplifier is the circuit's ________.
Options
A : power efficiency
B : maximum power limitations
C : impedance matching to the output device
D : All of the above
The principal advantage(s) of BJTs over MOSFETs is (are) that
Options
A : voltage drop across the transistor is important.
B : they are not as prone to ESD.
C : both of the above
D : none of the above
A silicon power transistor is operated with a heat sink ( SA = 1.5ºC/W). The transistor, rated at 150 W (25ºC), has JC = 0.5º C/W, and the mounting insulation has CS = 0.6 ºC/W. What is the maximum power that can be dissipated if the ambient temperature is 50ºC and T Jmax = 200 ºC?
Options
A : 61.5 W
B : 60.0 W
C : 57.7 W
D : 55.5 W
Refer to this figure. The dc voltage on the collector, V C , is
Options
A : 5.4 V.
B : 6.6 V.
C : 12 V.
D : 0 V.
What is the ratio of the secondary voltage to the primary voltage with the turn ratio in the windings?
Options
A : N 2 /N 1
B : (N 1 /N 2 ) 2
C : (N 1 /N 2 ) 1/3
D : N 1 × N 2
Class ________ amplifiers are normally operated in a push-pull configuration in order to produce an output that is a replica of the input.
Options
A : A
B : B
C : C
D : AB
You find that there is an input signal on the base of Q 1 and Q 2 . However, there is no output signal. You then measure the dc voltages on Q 2 and find them to be all 0 V. The possible trouble might be
Options
A : C 3 is shorted.
B : C 1 is open.
C : R L is shorted.
D : V CC is 0 V.
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