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WorksheetsPower Transistor
Total questions: 10
Worksheet time: 2mins
The output stage of a multistage amplifier is also called
mixer stage
power stage
detector stage
current stage
.......... coupling is generally employed in power amplifiers.
Direct
RC
Transformer
Impedance
Class ....... power amplifier has the highest collector efficiency.
C
AB
B
A
Power amplifiers handle ....... signals compared to voltage amplifiers.
small
very-small
large
all of the above
Class C amplifiers are used as .........
AF amplifiers
RF amplifiers
modulators
detectors
A 2-transistor class B power amplifier is commonly called ........ amplifier.
dual
push-pull
symmetrical
differential
If a transistor is operated in such a way that output current flows for 60º of the input signal, then it is ...... operation.
Class-A
Class-B
Class-AB
Class-C
Class .......... operation gives the maximum distortion.
A
B
C
AB
The size of a power transistor is made considerably large to ........
provide easy handling
dissipate heat
facilitate connections
increase its efficiency
The most important consideration in power amplifiers is......
(i) biasing the circuit
(ii) collector efficiency
(iii) to keep the transformer cool
biasing the circuit
collector efficiency
to keep the transformer cool
power gain
