Electrical Eng. · Question Bank

Electronics

384 questions · page 8 of 20. Answer in your head first, then check the solution.

📘 EE Mock Board Exam
#141
A large signal amplifier which is biased so that current is non-zero for less than one-half cycle.
AClass AB
BClass C
CClass A
DClass B
#142
A class _____ amplifier stage operates with a small forward bias on the transistor so that some collector current flows all the time.
AA
BB
CAB
DC
#143
The removal by electronic means of one extremity of an input waveform is called _____ .
Afiltering
Bclamping
Camplifying
Dclipping
#144
Which of the choices below does not describe a clipper circuit?
Alimiter
Bamplitude selector
Cslicer
Dbaseline stabilizer
#145
A half-wave signal has a period of
A16.7 ms
B8.3 ms
C16.7 μs
D8.3 μs
#146
A full-wave signal has a period of
A16.7 μs
B8.3 μs
C8.3 ms
D16.7 ms
#147
The frequency of a half-wave signal is
Atwice the line frequency
Bequal to the line frequency
Cone-half the line frequency
Done-fourth the line frequency
#148
For a full-wave rectifier, the output frequency
Aequals one-half the input frequency
Bequals the line frequency
Cequals two times the input frequency
Dis three times the line frequency
#149
The average dc voltage of a half wave rectifier circuit is _____ of the value of the peak input voltage.
A63.6 %
B31.8 %
C4.8 %
D6.2 %
#150
The average dc voltage of a full wave rectifier circuit is _____ of the value of the peak input voltage.
A31.8 %
B48.1 %
C63.6 %
D1 %
#151
The peak inverse voltage of a half wave rectifier circuit is approximately equal to the _____ of the input signal.
Apeak amplitude
Bfrequency
Cvoltage sinusoidal
Dcurrent
#152
The peak inverse voltage of a full wave center tapped rectifier circuit is equal to _____ of the input signal.
Athrice the peak
Btwice the peak
C1/2
D1/3
#153
Which of the following amplifiers is considered linear?
AClass A
BClass B
CClass C
DEither A or B
#154
The voltage gain of a common collector configuration is
Aunity
Bzero
Cvery high
Dmoderate
#155
A two-transistor class B amplifier is commonly called
Apush-pull amplifier
Bdual amplifier
Csymmetrical amplifier
Ddifferential amplifier
#156
If a transistor is operated in such a way that output current flows for 160 degrees of the input signal, then it is _____ operation.
Aclass A
Bclass C
Cclass B
Dclass AB
#157
Which coupling has the best frequency response?
Adirect
BRC
Ctransformer
Dtransistor
#158
A transistor amplifier has high output impedance because
Aemitter is heavily doped
Bcollector is wider than emitter or base
Ccollector has reverse bias
Demitter has forward bias
#159
Which of the following is considered an amplifier figure of merit?
Again-bandwidth product
Bbeta(ß)
Calpha(a)
Dtemperature
#160
A piece of equipment in an oscilloscope used to indicate pulse condition in a digital logic circuit.
Aprobe
Btest prods
Cconnector
Dlogic probe

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