- (A) to short circuit the rotor at slip rings
- (B) to short circuit the starting resistances in the starter
- (C) to short circuit the stator phase of motor to form star
- (D) none of the above
Electrical Engineering Mcqs
- (A) resistance rise method
- (B) thermometer method
- (C) embedded temperature method
- (D) all above methods
- (A) slip ring type
- (B) squirrel cage type
- (C) any of the above
- (D) none of the above
- (A) decreases the rotor current
- (B) increases the rotor current
- (C) rotor current becomes zero
- (D) rotor current rernains same
- (A) reduces starting torque as well as maximum torque
- (B) increases starting torque as well as maximum torque
- (C) increases starting torque but maxi-mum torque remains unchanged
- (D) increases starting torque but maxi-mum torque decreases
- (A) rotor leakage reactance
- (B) stator reactance
- (C) the reactive lagging magnetizing current necessary to generate the magnetic flux
- (D) all of the above
- (A) supply frequency
- (B) supply voltage
- (C) copper losses in motor
- (D) none of the above
- (A) sR2X2 = 1
- (B) sR2 = X2
- (C) R2 = sX2
- (D) R2 = s2X2
- (A) 10°
- (B) 30°
- (C) 60°
- (D) 90°
- (A) Capacitor start motor
- (B) Capacitor run motor
- (C) Split phase motor
- (D) Shaded pole motor
