When the supply to the excitation fails, the synchronous generator acts like a/an

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

Synchronous generator

Synchronous motor

Induction motor

Induction generator

Synchronous generator

Synchronous motor

Induction motor

Induction generator

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

P = 12, f = 60 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 8, f = 50 Hz

P = 12, f = 60 Hz

P = 10, f = 60 Hz

P= 12, f = 50 Hz

P = 8, f = 50 Hz

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SSC JE Electrical 2019 with solution SET-1
Which motor is referred to as a universal motor?

Series

Synchronous

Single-phase induction

Shunt

Series

Synchronous

Single-phase induction

Shunt

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SSC JE Electrical 2019 with solution SET-1
If the copper loss of a transformer at half full load is 400 W, then the copper loss corresponding to full load is

1200 W

1600 W

400 W

800 W

1200 W

1600 W

400 W

800 W

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SSC JE Electrical 2019 with solution SET-1
A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

0.4 V

−10 V

−4 V

−2.5 V

0.4 V

−10 V

−4 V

−2.5 V

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SSC JE Electrical 2019 with solution SET-1
________ is used to manufacture stay wire, earth wire, and structural components

Galvanized steel

Cadmium copper

Nichrome

Hard drawn copper

Galvanized steel

Cadmium copper

Nichrome

Hard drawn copper

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SSC JE Electrical 2019 with solution SET-1

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

SSC JE Electrical 2019 with solution SET-1 Which motor is referred to as a universal motor?

SSC JE Electrical 2019 with solution SET-1 If the copper loss of a transformer at half full load is 400 W, then the copper loss corresponding to full load is

SSC JE Electrical 2019 with solution SET-1 A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

SSC JE Electrical 2019 with solution SET-1 ________ is used to manufacture stay wire, earth wire, and structural components

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

SSC JE Electrical 2019 with solution SET-1
Which motor is referred to as a universal motor?

SSC JE Electrical 2019 with solution SET-1
If the copper loss of a transformer at half full load is 400 W, then the copper loss corresponding to full load is

SSC JE Electrical 2019 with solution SET-1
A magnetic circuit is applied with a current that changes at a rate of 5 A/sec. The circuit has an inductance of 2H, then the self-induced EMF is

SSC JE Electrical 2019 with solution SET-1
________ is used to manufacture stay wire, earth wire, and structural components