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.

24.11 kW.

26.21 kW.

25 kW.

23.06 kW.

24.11 kW.

26.21 kW.

25 kW.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The slot edges in a DC machine are made of

Silicon steel.

Fibre.

Cast iron.

Mild steel.

Silicon steel.

Fibre.

Cast iron.

Mild steel.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following statements is/are correct statements?

EMF per turn in both the windings are equal

EMF per turn in HV winding is less than EMF per turn in LV winding

All of these

EMF per turn in HV winding is more than EMF per turn in LV winding

EMF per turn in both the windings are equal

EMF per turn in HV winding is less than EMF per turn in LV winding

All of these

EMF per turn in HV winding is more than EMF per turn in LV winding

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be

more than 6 V

less than 6 V

zero

6 V

more than 6 V

less than 6 V

zero

6 V

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer would occur when the total loss is

500 W

250 W

400W

300 W

500 W

250 W

400W

300 W

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In synchronous motor the torque is proportional to

1/P

1/P²

Power P

P²

1/P

1/P²

Power P

P²

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 The slot edges in a DC machine are made of

Electrical Machines Which of the following statements is/are correct statements?

Electrical Machines A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer would occur when the total loss is

Electrical Machines In synchronous motor the torque is proportional to

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
The slot edges in a DC machine are made of

Electrical Machines
Which of the following statements is/are correct statements?

Electrical Machines
A 2 KVA transformer has iron loss of 150 W and full load copper loss of 250 W. The maximum efficiency of the transformer would occur when the total loss is

Electrical Machines
In synchronous motor the torque is proportional to