Category: Electrical Engineering Mcqs
During which time maximum conduction spreading take place in the thyristor during turn ON?
A. Delay time
B. Spread time
C. Rise time
D. Same for every case
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The cylindrical windings using circular conductors are used for current rating of____________?
A. upto 20 A
B. upto 40 A
C. upto 60 A
D. upto 80 A
In parallel resonance, the circuit impedance is_________________?
A. C/LR
B. R/LC
C. CR/L
D. L/CR
In case-the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be______________?
A. 100%
B. around 90%
C. anywhere between 75% and 90%
D. less than 50%
Which of the following can be measured by LVDT ?
A. Displacement
B. Velocity
C. Acceleration
D. Any of the above
The range of efficiency for shaded pole motors is______________?
A. 95% to 99%
B. 80% to 90%
C. 50% to 75%
D. 5% to 35%
In the cables, sheaths are used to___________?
A. prevent the moisture from entering the cable
B. provide enough strength
E. provide proper insulation
D. none of the above
___________________has least range of speed control?
A. Slip ring induction motor
B. Synchronous motor
C. D.C. shunt motor
D. Schrage motor
In capacitance grading of cables we use a _______ dielectric?
A. composite
B. porous
C. homogeneous
D. hygroscopic
Which type of bearing is provided in small induction motors to support the rotor shaft ?
A. Ball bearings
B. Cast iron bearings
C. Bush bearings
D. None of the above
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