A synchronous motor runs at 600rpm, which of the following case is true?

SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

P = 8, f = 50 Hz

P = 12, f = 60 Hz

P= 12, f = 50 Hz

P = 10, f = 60 Hz

P = 8, f = 50 Hz

P = 12, f = 60 Hz

P= 12, f = 50 Hz

P = 10, f = 60 Hz

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SSC JE Electrical 2019 with solution SET-1
When the supply to the excitation fails, the synchronous generator acts like a/an

Induction generator

Induction motor

Synchronous motor

Synchronous generator

Induction generator

Induction motor

Synchronous motor

Synchronous generator

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SSC JE Electrical 2019 with solution SET-1
If the field of the synchronous motor is under excited the power factor will be:

Unity

Zero

Lagging

Leading

Unity

Zero

Lagging

Leading

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SSC JE Electrical 2019 with solution SET-1
For a three-layer stranded wire, the number of strands in the first, second, and third layer respectively are:

1, 7 and 14

1, 5 and 10

1, 4 and 8

1, 6 and 12

1, 7 and 14

1, 5 and 10

1, 4 and 8

1, 6 and 12

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SSC JE Electrical 2019 with solution SET-1
The Norton’s current in the circuit shown below is

120A

4A

2A

12A

120A

4A

2A

12A

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SSC JE Electrical 2019 with solution SET-1
The ratio of conductor voltage and the voltage across the disc nearest to the conductor multiplied by the number discs are

Disc efficiency

String efficiency

Transmission line efficiency

Insulator efficiency

Disc efficiency

String efficiency

Transmission line efficiency

Insulator efficiency

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 A synchronous motor runs at 600rpm, which of the following case is true?

SSC JE Electrical 2019 with solution SET-1 When the supply to the excitation fails, the synchronous generator acts like a/an

SSC JE Electrical 2019 with solution SET-1 If the field of the synchronous motor is under excited the power factor will be:

SSC JE Electrical 2019 with solution SET-1 For a three-layer stranded wire, the number of strands in the first, second, and third layer respectively are:

SSC JE Electrical 2019 with solution SET-1 The Norton’s current in the circuit shown below is

SSC JE Electrical 2019 with solution SET-1 The ratio of conductor voltage and the voltage across the disc nearest to the conductor multiplied by the number discs are

SSC JE Electrical 2019 with solution SET-1
A synchronous motor runs at 600rpm, which of the following case is true?

SSC JE Electrical 2019 with solution SET-1
When the supply to the excitation fails, the synchronous generator acts like a/an

SSC JE Electrical 2019 with solution SET-1
If the field of the synchronous motor is under excited the power factor will be:

SSC JE Electrical 2019 with solution SET-1
For a three-layer stranded wire, the number of strands in the first, second, and third layer respectively are:

SSC JE Electrical 2019 with solution SET-1
The Norton’s current in the circuit shown below is

SSC JE Electrical 2019 with solution SET-1
The ratio of conductor voltage and the voltage across the disc nearest to the conductor multiplied by the number discs are