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.

23.06 kW.

24.11 kW.

25 kW.

26.21 kW.

23.06 kW.

24.11 kW.

25 kW.

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Electrical Machines
The squirrel cage induction motors are provided with blades in order to

none of these.

facilitate cooling of rotor.

balance the rotor dynamically.

eliminate noise.

none of these.

facilitate cooling of rotor.

balance the rotor dynamically.

eliminate noise.

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Electrical Machines
Commutator pitches of duplex and simplex lap windings are respectively

2 and 2

4 and 2

4 ang 1

2 and 1

2 and 2

4 and 2

4 ang 1

2 and 1

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Electrical Machines
Which is the arrangement of windings in a core type single phase transformer?

Half lv inside and half hv outside on each core limb

Lv on one core limb and hv on the other

Sandwiched lv and hv discs on each core limb

Half hv inside and half lv outside on each core limb

Half lv inside and half hv outside on each core limb

Lv on one core limb and hv on the other

Sandwiched lv and hv discs on each core limb

Half hv inside and half lv outside on each core limb

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Electrical Machines
When excitation is increased (over excitation), the synchronous generator operates at

any of the above.

unity power factor.

lagging power factor.

leading power factor.

any of the above.

unity power factor.

lagging power factor.

leading power factor.

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Electrical Machines
An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be

plugging.

locking.

crawling.

cogging.

plugging.

locking.

crawling.

cogging.

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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 squirrel cage induction motors are provided with blades in order to

Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively

Electrical Machines Which is the arrangement of windings in a core type single phase transformer?

Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at

Electrical Machines An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to 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

Electrical Machines
The squirrel cage induction motors are provided with blades in order to

Electrical Machines
Commutator pitches of duplex and simplex lap windings are respectively

Electrical Machines
Which is the arrangement of windings in a core type single phase transformer?

Electrical Machines
When excitation is increased (over excitation), the synchronous generator operates at

Electrical Machines
An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be