The direction of rotation of a 3 - ÃŽÂ¦ induction motor is clockwise when it is supplied with 3 - ÃŽÂ¦ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be

Electrical Machines
The direction of rotation of a 3 - ÃŽÂ¦ induction motor is clockwise when it is supplied with 3 - ÃŽÂ¦ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be

A - C - B.

C - A - B.

B - C - A or C - A - B.

B - C - A.

A - C - B.

C - A - B.

B - C - A or C - A - B.

B - C - A.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

50 KVA

100 KVA

83.33 KVA

123.3 KVA

50 KVA

100 KVA

83.33 KVA

123.3 KVA

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The ___________________ generator has the poorest voltage regulation.

under-compounded.

over compounded.

shunt.

differential compounded.

under-compounded.

over compounded.

shunt.

differential compounded.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a transformer the magnetic coupling between the primary and secondary winding can be increased by

using soft material for winding.

using the magnetic core of low reluctance.

increasing the number of turns.

using transformer oil of better quality.

using soft material for winding.

using the magnetic core of low reluctance.

increasing the number of turns.

using transformer oil of better quality.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed?

The speed will increase abruptly.

The speed will remains almost constant.

The speed will increase gradually.

The speed will increase in proportion to reduction in load.

The speed will increase abruptly.

The speed will remains almost constant.

The speed will increase gradually.

The speed will increase in proportion to reduction in load.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Which of the following motor is suitable for frequent starting and stoppings?

Resistance split phase motor

All of these

Capacitor start motor

Capacitor start capacitor run motor

Resistance split phase motor

All of these

Capacitor start motor

Capacitor start capacitor run motor

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines

Electrical Machines The direction of rotation of a 3 - ÃŽÂ¦ induction motor is clockwise when it is supplied with 3 - ÃŽÂ¦ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be

Electrical Machines A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

Electrical Machines The ___________________ generator has the poorest voltage regulation.

Electrical Machines In a transformer the magnetic coupling between the primary and secondary winding can be increased by

Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed?

Electrical Machines Which of the following motor is suitable for frequent starting and stoppings?

Electrical Machines
The direction of rotation of a 3 - ÃŽÂ¦ induction motor is clockwise when it is supplied with 3 - ÃŽÂ¦ sinusoidal voltage having phase sequence A - B - C. For counterclockwise rotation of motor, the phase sequence of the supply should be

Electrical Machines
A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is

Electrical Machines
The ___________________ generator has the poorest voltage regulation.

Electrical Machines
In a transformer the magnetic coupling between the primary and secondary winding can be increased by

Electrical Machines
In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed?

Electrical Machines
Which of the following motor is suitable for frequent starting and stoppings?