Electrical Machines In a three phase slip-ring induction motor, brushes are connected to DC supply. 3 - Φ AC supply. equalizing coils. external star-connected resistors. DC supply. 3 - Φ AC supply. equalizing coils. external star-connected resistors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing open circuit and short circuit tests. zero power factor and slip tests. open circuit and zero power factor tests. short circuit and slip tests. open circuit and short circuit tests. zero power factor and slip tests. open circuit and zero power factor tests. short circuit and slip tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively? 1600 W and 5000 W 3200 W and 2500 W 3200 W and 5200 W 1600 W and 1250 W 1600 W and 5000 W 3200 W and 2500 W 3200 W and 5200 W 1600 W and 1250 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip exists in none of above. in both machines. induction motor. synchronous motor. none of above. in both machines. induction motor. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Generator works on the principle of production static induced emf. None of these both A and B. dynamically induced emf. static induced emf. None of these both A and B. dynamically induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will rotate in direction opposite to that before maintenance. rotate in the same direction as before maintenance. not start at all. get heated and damaged. rotate in direction opposite to that before maintenance. rotate in the same direction as before maintenance. not start at all. get heated and damaged. ANSWER DOWNLOAD EXAMIANS APP
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