Electrical Machines Maximum efficiency will occur, when copper loss is_______to iron loss? any of the above less than greater than equal to any of the above less than greater than equal to ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence? All of these RBY BYR BRY All of these RBY BYR BRY ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increases in field excitation of a DC generator, its generated emf remains constant. increases upto a limit and then remains almost constant. increases. decreases. remains constant. increases upto a limit and then remains almost constant. increases. decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 20 volts. 40 volts. 10 volts. 30 volts. 20 volts. 40 volts. 10 volts. 30 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the armature of DC motor is directly proportional to The speed of motor. The voltage across the terminals. None of above. The torque required. The speed of motor. The voltage across the terminals. None of above. The torque required. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing 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. open circuit and short circuit tests. zero power factor and slip tests. ANSWER DOWNLOAD EXAMIANS APP
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