A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

Electrical Machines
A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

23.06 kW.

25 kW.

24.11 kW.

26.21 kW.

23.06 kW.

25 kW.

24.11 kW.

26.21 kW.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be

Any where between 75 % and 90 %.

Around 100 %.

Less than 50 %

Around 90 %

Any where between 75 % and 90 %.

Around 100 %.

Less than 50 %

Around 90 %

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In an induction motor, the no-load slip is generally equal to

1.5 %.

4 %.

less than 1 %.

zero.

1.5 %.

4 %.

less than 1 %.

zero.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to

30°.

75°.

45°.

0°.

30°.

75°.

45°.

0°.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Flashing of DC generator means

None of these

neutralization of residual magnetism.

creation of residual magnetism by a DC source.

increasing flux density by providing extra ampere-turns in field.

None of these

neutralization of residual magnetism.

creation of residual magnetism by a DC source.

increasing flux density by providing extra ampere-turns in field.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type

level compound.

shunt generator.

series generator.

short - shunt generator.

level compound.

shunt generator.

series generator.

short - shunt generator.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

Electrical Machines In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be

Electrical Machines In an induction motor, the no-load slip is generally equal to

Electrical Machines For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to

Electrical Machines Flashing of DC generator means

Electrical Machines The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type

Electrical Machines
A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be

Electrical Machines
In case the conditions for maximum power for DC motor are established, the efficiency of the motor will be

Electrical Machines
In an induction motor, the no-load slip is generally equal to

Electrical Machines
For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to

Electrical Machines
Flashing of DC generator means

Electrical Machines
The voltmeter connected across a generator reads voltage same at no load and at full load (rated). The generator is of the type