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

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

6 V

more than 6 V

less than 6 V

zero

6 V

more than 6 V

less than 6 V

zero

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Electrical Machines
In double cage induction motor, the inner cage offers

high resistance and high reactance.

low resistance and low reactance.

low resistance and high reactance.

high resistance and low reactance.

high resistance and high reactance.

low resistance and low reactance.

low resistance and high reactance.

high resistance and low reactance.

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Electrical Machines
A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

83.33 KVA

50 KVA

123.3 KVA

100 KVA

83.33 KVA

50 KVA

123.3 KVA

100 KVA

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Electrical Machines
A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is

50 V

40 V

20 V

zero

50 V

40 V

20 V

zero

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Electrical Machines
Drop in speed from no load to full load is very high in

Series motor without interpoles.

Series motor with interpoles.

Shunt motor with interpoles.

Cummulative compound motor with interpoles.

Series motor without interpoles.

Series motor with interpoles.

Shunt motor with interpoles.

Cummulative compound motor with interpoles.

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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

armature winding has thick leads whereas field winding has thin leads

both the windings have thick leads

armature winding has thin leads whereas field winding has thick leads

both the windings have thin leads

armature winding has thick leads whereas field winding has thin leads

both the windings have thick leads

armature winding has thin leads whereas field winding has thick leads

both the windings have thin leads

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines In double cage induction motor, the inner cage offers

Electrical Machines A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is

Electrical Machines Drop in speed from no load to full load is very high in

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

Electrical Machines
In double cage induction motor, the inner cage offers

Electrical Machines
A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

Electrical Machines
A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is

Electrical Machines
Drop in speed from no load to full load is very high in

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