Electrical Machines Ratio of starting torque to full load torque is minimum in Series motor. Cumulative compound motor. Differential compound motor. Shunt motor. Series motor. Cumulative compound motor. Differential compound motor. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is 44 A. 400 A. 440 A. 40 A. 44 A. 400 A. 440 A. 40 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 400 / 200 V, Y - Y connected wound rotor induction motor has 0.06 Ω rotor resistance and 0.3 Ω standstill reactance per phase. To make the starting torque equal to maximum torque of the motor the additional resistance required 0.45 Ω. 0.24 Ω. 0.66 Ω. 0.78 Ω. 0.45 Ω. 0.24 Ω. 0.66 Ω. 0.78 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is demagnetizing. ineffective. cross – magnetizing. magnetizing. demagnetizing. ineffective. cross – magnetizing. magnetizing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? Poly-phase induction motor. Poly-phase synchronous machine. Single phase induction motor. None of these. Poly-phase induction motor. Poly-phase synchronous machine. Single phase induction motor. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of squirrel cage induction motor. slip ring induction motor. hysteresis motor. stepper motor. squirrel cage induction motor. slip ring induction motor. hysteresis motor. stepper motor. ANSWER DOWNLOAD EXAMIANS APP
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