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.Management Sciences
A. zero frequency
B. the same frequency as the slip frequency
C. the same phase as the rotor e.m.f.
D. high value for the satisfactory speed control
Related Mcqs:
- The shaft of an induction motor is made of_____________?
- A. high speed steel B. stainless steel C. carbon steel D. cast iron...
- In a three-phase induction motor, the number of poles in the rotor winding is always__________?
- A. zero B. more than the number of poles in stator C. less than number of poles in stator D. equal to number of poles in stator...
- The speed characteristics of an induction motor closely resemble the speedload characteristics of which of the following machines?
- A. D.C. series motor B. D.C. shunt motor C. universal motor D. none of the above...
- When /?2 is the rotor resistance, .X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running conditions will be_____________?
- A. sR2X2 = 1 B. sR2 = X2 C. R2 = sX2 D. R2 = s2X2...
- Insertion of resistance in the stator of an induction motor___________?
- A. increases the load torque B. decreases the starting torque C. increases the starting torque D. none of the above...
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