A) lower losses B) less heating of rotor C) negative sequence component in the rotating magnetic field D) all of the above. Ans : (C)
A) Full load speed B) Percentage slip C) Starting current D) All of the above. Ans : (B)
A) Increase supply voltage B) Increase supply frequency C) Connecting a capacitor across the motor terminals D) Connecting a star-connected resistance across the slip ring terminals of the motor. Ans : (D)
A) increase by 10% B) increase by 5% C) decrease by 5% D) decrease by 10%. Ans : (B)
A) Temperature rise on full load B) Starting current C) Maximum running torque D) Full load speed. Ans : (D)
A) increase by 20% B) increase by 10% C) decrease by 20% D) decrease by 10%. Ans : (C)
A) % slip B) Full load current C) Maximum temperature rise on full load D) All of the above. Ans : (D)
A) Synchronous speed B) Temperature rise on full load C) Full load current D) Starting torque. Ans : (A)
A) 1% to 25% B) 0 to 5% C) 0.1% to 0.5% D) 0 to 1%. Ans : (B)
A) 5% B) 10% C) 20% D) 40%. Ans : (C)