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.Management Sciences
Category: Electrical Engineering Mcqs
An SCR is turned off by _________________?
A. Reducing anode voltage to zero
B. Reducing gate voltage to zero
C. Reverse biasing the gate
D. None of the above
An SCR behaves as a____________switch?
A. Unidirectional
B. Bidirectional
C. Mechanical
D. None of the above
When a differential amplifier is operated single-ended, _______________?
A. the output is grounded
B. one input is grounded and signal is applied to the other
C. both inputs are connected together
D. the output is not inverted
Which of the following statement is correct_______________?
A. A semi-conductor is a material whose conductivity is same as between that of a conductor and an insulator
B. A semi-conductor is a material which has conductivity having average value of conductivity of metal and insulator
C. A semi-conductor is one which con¬ducts only half of the applied voltage
D. A semi-conductor is a material made of alternate layers of conducting material and insulator
A steam power station requires space______________?
A. equal to diesel power station
B. more than diesel power station
C. less than diesel power station
The armature voltage control of D.C. motor provides_____________?
A. constant voltage drive
B. constant current drive
C. constant torque drive
D. none of the above
Artificial draught is produced by______________?
A. induced fan
B. forced fan
C. induced and forced fan
D. all of the above
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