Category: Electrical Engineering Mcqs
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
An induction motor with 1000 r.p.m. speed will have____________?
A. 8 poles
B. 6 poles
C. 4 poles
D. 2 poles
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