Which of the following is an important feature of a 3-phase synchronous motor?

SSC JE Electrical 2019 with solution SET-2
Which of the following is an important feature of a 3-phase synchronous motor?

High starting torque

Low starting current

Low starting torque

No starting torque

High starting torque

Low starting current

Low starting torque

No starting torque

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SSC JE Electrical 2019 with solution SET-2
1 kcal is approximately equal to

4200 watt-sec

4.2 joules

420 joules

420 watt-hour

4200 watt-sec

4.2 joules

420 joules

420 watt-hour

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SSC JE Electrical 2019 with solution SET-2
During the ______ period the power supply to the motor is cut-off and the train is allowed to run due to its own momentum?

Braking

Free running

Notching up

Coasting

Braking

Free running

Notching up

Coasting

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SSC JE Electrical 2019 with solution SET-2
In a suspension type insulator the voltage…..?

Across the top disc is minimum

Across the top disc is maximum

Across the center disc is minimum

Across the center disc is maximum

Across the top disc is minimum

Across the top disc is maximum

Across the center disc is minimum

Across the center disc is maximum

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SSC JE Electrical 2019 with solution SET-2
In Boolean algebra (A. Ā) + A

A

1

0

Ā

A

1

0

Ā

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SSC JE Electrical 2019 with solution SET-2
The total number of possible phase sequences for a three-phase AC system is ____

2

3

1

0

2

3

1

0

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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2 Which of the following is an important feature of a 3-phase synchronous motor?

SSC JE Electrical 2019 with solution SET-2 1 kcal is approximately equal to

SSC JE Electrical 2019 with solution SET-2 During the ______ period the power supply to the motor is cut-off and the train is allowed to run due to its own momentum?

SSC JE Electrical 2019 with solution SET-2 In a suspension type insulator the voltage…..?

SSC JE Electrical 2019 with solution SET-2 In Boolean algebra (A. Ā) + A

SSC JE Electrical 2019 with solution SET-2 The total number of possible phase sequences for a three-phase AC system is ____

SSC JE Electrical 2019 with solution SET-2
Which of the following is an important feature of a 3-phase synchronous motor?

SSC JE Electrical 2019 with solution SET-2
1 kcal is approximately equal to

SSC JE Electrical 2019 with solution SET-2
During the ______ period the power supply to the motor is cut-off and the train is allowed to run due to its own momentum?

SSC JE Electrical 2019 with solution SET-2
In a suspension type insulator the voltage…..?

SSC JE Electrical 2019 with solution SET-2
In Boolean algebra (A. Ā) + A

SSC JE Electrical 2019 with solution SET-2
The total number of possible phase sequences for a three-phase AC system is ____