- (A) k/torque with direct switching
- (B) K x torque with direct switching
- (C) K2 x torque with direct switching
- (D) k2/torque with direct switching
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- (A) low voltage supply
- (B) high loads
- (C) harmonics develped in the motor
- (D) improper design of the machine
- (E) none of the above
- (A) By changing the number of stator poles
- (B) Rotor rheostat control
- (C) By operating two motors in cascade
- (D) By injecting
- (E) m.f. in the rotor circuit
- (A) proper ventilation
- (B) using DOL starter
- (C) auto-transformer starter
- (D) having number of rotor slots more or less than the number of stator slots (not equal)
- (A) 0.2 lagging
- (B) 0.2 leading
- (C) 0.5 leading
- (D) unity
- (A) high loads
- (B) low voltage supply
- (C) improper design of machine
- (D) harmonics developed in the motor
- (A) changing supply frequency
- (B) changing number of poles
- (C) changing winding resistance
- (D) reducing supply voltage
- (A) low horsepower motors
- (B) variable speed motors
- (C) high horsepower motors
- (D) high speed motors
- (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
- (A) rotor conductor ends are short-circuited through slip rings
- (B) rotor conductors are short-circuited through end rings
- (C) rotor conductors are kept open
- (D) rotor conductors are connected to insulation
