A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

Electrical Machines
A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

400 Amp.

0.5 Amp.

800 Amp.

320 Amp.

400 Amp.

0.5 Amp.

800 Amp.

320 Amp.

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Electrical Machines
A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is

0.08

-0.08

-1.92

1.92

0.08

-0.08

-1.92

1.92

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Belt conveyors offer _______________ starting torque.

zero.

medium.

high.

low.

zero.

medium.

high.

low.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The external resistance to be added in the armature circuit to limit the armature current to 125% of its rated value is

15.1 Ω

31.9 Ω

31.1 Ω

15.9 Ω

15.1 Ω

31.9 Ω

31.1 Ω

15.9 Ω

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 440 V, 3-phase, 10 pole and 50 HZ synchronous motor delivering a torque of 50 N-m, delivers a power of

3000W

500W

100W

1000W

3000W

500W

100W

1000W

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor

will become leading

will remain the same

None of these

will become lagging

will become leading

will remain the same

None of these

will become lagging

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is

Electrical Machines Belt conveyors offer _______________ starting torque.

Electrical Machines A 440 V, 3-phase, 10 pole and 50 HZ synchronous motor delivering a torque of 50 N-m, delivers a power of

Electrical Machines A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor

Electrical Machines
A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

Electrical Machines
A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is

Electrical Machines
Belt conveyors offer _______________ starting torque.

Electrical Machines
A 440 V, 3-phase, 10 pole and 50 HZ synchronous motor delivering a torque of 50 N-m, delivers a power of

Electrical Machines
A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor