Electrical Machines The maximum power developed in cylindrical synchronous machine is occurs at a load angle of less than 90o. 90o. Greater than 90o. 0o. less than 90o. 90o. Greater than 90o. 0o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC motor used for shears and punches is Shunt motor. Series motor. Differential compound motor. Cummulative compound motor. Shunt motor. Series motor. Differential compound motor. Cummulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 350 V. 420 V. 400 V. 480 V. 350 V. 420 V. 400 V. 480 V. 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 0.78 Ω. 0.66 Ω. 0.45 Ω. 0.24 Ω. 0.78 Ω. 0.66 Ω. 0.45 Ω. 0.24 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor has a rotor resistance of 0.002 Ω / phase. If the resistance is increased to 0.004 Ω / phase then the maximum torque will increase by 100% remain unaltered reduced to half increase by 200% increase by 100% remain unaltered reduced to half increase by 200% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ wound rotor induction motor the short circuit gear is used to short circuit the starting resistance in the starter. rotor at slip rings. None of these stator phases of the motor. starting resistance in the starter. rotor at slip rings. None of these stator phases of the motor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS