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.

0.5 Amp.

400 Amp.

320 Amp.

800 Amp.

0.5 Amp.

400 Amp.

320 Amp.

800 Amp.

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Electrical Machines
Which of the following motor is expensive for same Kw output rates?

Induction motor.

DC Shunt Motor

Synchronous motor.

AC single phase motor.

Induction motor.

DC Shunt Motor

Synchronous motor.

AC single phase motor.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be

8+j13 ohms

3.05+j5.08 ohms

3.5+j5.8 ohms

53+j85 ohms

8+j13 ohms

3.05+j5.08 ohms

3.5+j5.8 ohms

53+j85 ohms

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
It is advisable to start a DC series motor with some load to

Avoid sparking.

Limit the flux.

Limit the current.

Limit the speed.

Avoid sparking.

Limit the flux.

Limit the current.

Limit the speed.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Reversing the direction of rotation of split phase motors is done by

reversing the terminals of starting winding.

interchanging the capacitor from starting winding to main winding or vice versa.

reversing the terminals of main winding.

All of these

reversing the terminals of starting winding.

interchanging the capacitor from starting winding to main winding or vice versa.

reversing the terminals of main winding.

All of these

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is

differentially compounded.

shunt connected.

cumulatively compounded.

separately excited.

differentially compounded.

shunt connected.

cumulatively compounded.

separately excited.

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 Which of the following motor is expensive for same Kw output rates?

Electrical Machines A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be

Electrical Machines It is advisable to start a DC series motor with some load to

Electrical Machines Reversing the direction of rotation of split phase motors is done by

Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is

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
Which of the following motor is expensive for same Kw output rates?

Electrical Machines
A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be

Electrical Machines
It is advisable to start a DC series motor with some load to

Electrical Machines
Reversing the direction of rotation of split phase motors is done by

Electrical Machines
For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is