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.Management Sciences
Category: Electrical Engineering Mcqs
Kirchhoff s law is not applicable to circuits with____________?
A. lumped parameters
B. passive elements
C. distributed parameters
D. non-linear resistances
A region around a stationary electric charge has__________?
A. an electric field
B. a magnetic field
C. both A. and (6)
D. none of the above
In D.C. machines the residual magnetism is of the order of_________________?
A. 2 to 3 per cent
B. 10 to 15 per cent
C. 20 to 25 per cent
D. 50 to 75 per cent
Helical windings are used in________________?
A. distribution transformers
B. power transformers
C. shell type transformers
D. none of the above
The point of intersection of d.c. and a.c. load lines is called________________?
A. Saturation point
B. Cut off point
C. Operating point
D. None of the above
________________ coupling is generally employed in power amplifiers?
A. Transformer
B. RC
C. direct
D. Impedance
Interruption of large currents by relay requires______________?
A. arc suppressing blow out coils
B. wide separation of the opened contacts
C. high speed opening of contacts
D. all of the above
An uncharged conductor is placed near a charged conductor, then_____________?
A. the uncharged conductor gets charged by conduction
B. the uncharged conductor gets charged by induction and then attracted towards the charging body
C. the uncharged conductor is attracted first and then charged by induction
D. it remains as such
An AND gate will function as OR if________________?
A. all the inputs to the gates are “1”
B. all the inputs are ‘0’
C. either of the inputs is “1”
D. all the inputs and outputs are complemented
Speed control of a universal motor is achieved by__________?
A. varying field flux with tapped field windings
B. connecting rheostat in series
C. applying variable voltage by means of silicon controlled rectifier
D. applying variable voltage by means of variable auto-transformer
E. all of the above methods
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