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.

26.21 kW.

25 kW.

24.11 kW.

23.06 kW.

26.21 kW.

25 kW.

24.11 kW.

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Electrical Machines
In a DC Shunt Motor if the load current increases then field flux

decreases

increases.

remains constant.

decreases.

decreases

increases.

remains constant.

decreases.

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Electrical Machines
Centrifugal switch is absent in which of the single phase induction motor?

Split phase motor.

Shaded pole motor.

None of these

PSC (permanent split capacitor) motor.

Split phase motor.

Shaded pole motor.

None of these

PSC (permanent split capacitor) motor.

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Electrical Machines
Series field consists of--------number of turns and ---------- conductors respectively

less and thick

less and thin

large and thick

large and thin

less and thick

less and thin

large and thick

large and thin

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Electrical Machines
A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine

both the windings have thin leads

armature winding has thin leads whereas field winding has thick leads

armature winding has thick leads whereas field winding has thin leads

both the windings have thick leads

both the windings have thin leads

armature winding has thin leads whereas field winding has thick leads

armature winding has thick leads whereas field winding has thin leads

both the windings have thick leads

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Electrical Machines
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

0.96

0.87

1.06

0.95

0.96

0.87

1.06

0.95

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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 In a DC Shunt Motor if the load current increases then field flux

Electrical Machines Centrifugal switch is absent in which of the single phase induction motor?

Electrical Machines Series field consists of--------number of turns and ---------- conductors respectively

Electrical Machines A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine

Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is

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 a DC Shunt Motor if the load current increases then field flux

Electrical Machines
Centrifugal switch is absent in which of the single phase induction motor?

Electrical Machines
Series field consists of--------number of turns and ---------- conductors respectively

Electrical Machines
A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine

Electrical Machines
A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is