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

26.21 kW.

24.11 kW.

23.06 kW.

25 kW.

26.21 kW.

24.11 kW.

23.06 kW.

25 kW.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be

16.55 Nm

15.92 Nm

15.6 Nm

15.28 Nm

16.55 Nm

15.92 Nm

15.6 Nm

15.28 Nm

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

worsen and terminal voltage will fall

improve but terminal voltage will fall.

improve and terminal voltage will rise .

worsen and terminal voltage will rise.

worsen and terminal voltage will fall

improve but terminal voltage will fall.

improve and terminal voltage will rise .

worsen and terminal voltage will rise.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following methods of speed control is not affected through stator side?

Change of supply voltage.

Change of number of pole.

Change of supply frequency.

Change of rotor resistance.

Change of supply voltage.

Change of number of pole.

Change of supply frequency.

Change of rotor resistance.

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Electrical Machines
A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp?

20 N.

Can't be determined.

None of these.

15 N.

20 N.

Can't be determined.

None of these.

15 N.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
DC shunt motors are suitable for

All of this.

Centrifugal pumps

Blowers and fans.

Lathes.

All of this.

Centrifugal pumps

Blowers and fans.

Lathes.

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 A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be

Electrical Machines In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

Electrical Machines Which of the following methods of speed control is not affected through stator side?

Electrical Machines A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp?

Electrical Machines DC shunt motors are suitable for

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
A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be

Electrical Machines
In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will

Electrical Machines
Which of the following methods of speed control is not affected through stator side?

Electrical Machines
A motor armature conductor of length 0.5 m is exposed to a flux density of 4 Wb / m2. Calculate the force experienced by the conductor, when the armature current is 5 Amp?

Electrical Machines
DC shunt motors are suitable for