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.Management Sciences
Category: Electrical Engineering Mcqs
Spark plug makes use of which of the following materials for insulation ?
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A. Porcelain
B. Slate
C. Asbestos
D. Glass
Kirchhoffs current law is applicable to only
A. junction in a network
B. closed loops in a network
C. electric circuits
D. electronic circuits
D.C. series motors are used______________?
A. where load is constant
B. where load changes frequently
C. where constant operating speed is needed
D. in none of the above situations
An open coil has_____________?
A. zero resistance and inductance
B. infinite resistance and zero inductance
C. infinite resistance and normal inductance
D. zero resistance and high inductance
In normal operation of an SCR, gate is _____________w.r.t. cathode?
A. Positive
B. Negative
C. At zero potential
D. None of the above
Which of the following circuit breakers has high reliability and minimum maintenance ?
A. Air blast circuit breakers
B. Circuit breaker with SF6 gas
C. Vacuum circuit breakers
D. Oil circuit breakers
The converse of hardness is known as______________?
A. malleability
B. toughness
C. softness
D. none of the above
The peak value of a sine wave is 200 V. Its average value is___________?
A. 127.4 V
B. 141.4 V
C. 282.8 V
D. 200V
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