The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would

Electrical Machines
The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would

become zero

remain the same

decrease

increase

become zero

remain the same

decrease

increase

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively?

3200 W and 2500 W

1600 W and 1250 W

3200 W and 5200 W

1600 W and 5000 W

3200 W and 2500 W

1600 W and 1250 W

3200 W and 5200 W

1600 W and 5000 W

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Armature resistance control method is used for the _______ ?

both 1 and 2

above rated speed

below rated speed

None of these

both 1 and 2

above rated speed

below rated speed

None of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms.

0.649.

0.512.

0.573.

0.443.

0.649.

0.512.

0.573.

0.443.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following bearings and their uses are correct

neither 1 nor 2

roller bearings → large machines

both A and B

ball bearings → small machines

neither 1 nor 2

roller bearings → large machines

both A and B

ball bearings → small machines

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The output indicate on the name plate of any motor is always the

Power drawn in KW.

Output power at the shaft.

Power drawn in KVA.

Gross power.

Power drawn in KW.

Output power at the shaft.

Power drawn in KVA.

Gross power.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively?

Electrical Machines Armature resistance control method is used for the _______ ?

Electrical Machines A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms.

Electrical Machines Which of the following bearings and their uses are correct

Electrical Machines The output indicate on the name plate of any motor is always the

Electrical Machines
The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively?

Electrical Machines
Armature resistance control method is used for the _______ ?

Electrical Machines
A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms.

Electrical Machines
Which of the following bearings and their uses are correct

Electrical Machines
The output indicate on the name plate of any motor is always the