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.

33.33 Amp.

29 Amp.

44.47 Amp.

43 Amp.

33.33 Amp.

29 Amp.

44.47 Amp.

43 Amp.

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Electrical Machines
In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased

both power angle and power factor decrease

power angle decrease and power factor increase

power angle increase and power factor decrease

both power angle and power factor increase

both power angle and power factor decrease

power angle decrease and power factor increase

power angle increase and power factor decrease

both power angle and power factor increase

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Electrical Machines
In DC shunt motor if load is increased, the speed

reduce slightly.

increase proportional.

increased slightly.

remains constant.

reduce slightly.

increase proportional.

increased slightly.

remains constant.

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Electrical Machines
Which of following DC generator will be in a position to build up without any residual magnetism in the field?

Compound.

Series.

Separately excited.

Shunt.

Compound.

Series.

Separately excited.

Shunt.

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Electrical Machines
If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is

zero

maximum

minimum

All of these

zero

maximum

minimum

All of these

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Electrical Machines
Two generators G1 and G2 are to be operated in parallel to deliver a total current of 60 A. Generator one has a terminal voltage of 280 V on no load and 240 V when supplying 40 A current. Similarly the second generator has a voltage of 300 V when on no load and 240 V when supplying of 50 A of current. The output voltage of each generator will be

271.7 V.

256.4 V.

238.2 V.

240 V.

271.7 V.

256.4 V.

238.2 V.

240 V.

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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 In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased

Electrical Machines In DC shunt motor if load is increased, the speed

Electrical Machines Which of following DC generator will be in a position to build up without any residual magnetism in the field?

Electrical Machines If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is

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
In a synchronous generator with constant steam input supplies power to an infinite bus at a lagging power factor. If the excitation is increased

Electrical Machines
In DC shunt motor if load is increased, the speed

Electrical Machines
Which of following DC generator will be in a position to build up without any residual magnetism in the field?

Electrical Machines
If direct axis reactance Xd and quadrature axis reactance Xq are equal, then reluctance power is