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Category: Electrical Engineering Mcqs
In an SCR circuit, the angle of conduction can be changed by__________________?
A. Changing anode voltage
B. Changing gate voltage
C. Reverse biasing the gate
D. None of the above
A synchronous motor installed at the receiving end substation operates with such an excitation that it takes power at lagging power factor. Now if the applied voltage of the synchronous motor goes down, the power factor of the synchronous motor will___________?
A. remain same
B. go down
C. improve
D. none of the above
Which of the following can have negative temperature coefficient _____________?
A. Compounds of silver
B. Liquid metals
C. Metallic alloys
D. Electrolytes
Shelf life of a small dry cell is___________?
A. equal to that of large dry cell
B. less than that of large dry cell
C. more than that of large dry cell
D. none of the above
The wattage of motor for driving domestic sewing machine will be around__________?
A. 100 to 150 W
B. 40 to 75 W
C. 10 to 30 W
D. 5 to 10 W
An integrating circuit is a simple RC series circuit with output taken across ______________?
A. Both R and C
B. R
C. C
D. None of the above
Which of the following is exhibited by Root locus diagrams ?
A. The poles of the transfer function for a set of parameter values
B. The bandwidth of the system
C. The response of a system to a step input
D. The frequency response of a system
F. None of the above
These days D.C. motors are widely used in____________?
A. pumping sets
B. air compressors
C. electric traction
D. machine shops
To measure radio frequency, the suitable frequency meter is_______________?
A. Weston frequency meter
B. reed vibrator frequency meter
C. heterodoxy frequency meter
D. electrical resonance frequency meter
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