A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.

Electrical Machines
A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.

29 Amp.

33.33 Amp.

43 Amp.

44.47 Amp.

29 Amp.

33.33 Amp.

43 Amp.

44.47 Amp.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The dc motor which can provide zero speed regulation at full load without any controller, is

series.

differential compound.

shunt.

cumulative compound.

series.

differential compound.

shunt.

cumulative compound.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If starter is not used with large DC motor for starting, it will

draw a starting current many times its rated full load current.

all of above.

provide execessive voltage drop in line.

damage the armature and commutator.

draw a starting current many times its rated full load current.

all of above.

provide execessive voltage drop in line.

damage the armature and commutator.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The field divertor resistance for a DC series motor is of order of

10 Ω

50 Ω

100 Ω

0.1 Ω

10 Ω

50 Ω

100 Ω

0.1 Ω

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be

28 W.

30 W.

36 W.

25 W.

28 W.

30 W.

36 W.

25 W.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to

45°.

30°.

75°.

0°.

45°.

30°.

75°.

0°.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.

Electrical Machines The dc motor which can provide zero speed regulation at full load without any controller, is

Electrical Machines If starter is not used with large DC motor for starting, it will

Electrical Machines The field divertor resistance for a DC series motor is of order of

Electrical Machines A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be

Electrical Machines For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to

Electrical Machines
A 4 pole dc motor with armature winding resistance of 0.6 ohm receives a supply of 230 Volt. If the back emf produced during running condition is equal to 210 volt. Calculate the current flowing through the armature at this point.

Electrical Machines
The dc motor which can provide zero speed regulation at full load without any controller, is

Electrical Machines
If starter is not used with large DC motor for starting, it will

Electrical Machines
The field divertor resistance for a DC series motor is of order of

Electrical Machines
A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be

Electrical Machines
For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to