Identify the INCORRECT statement with regards to synchronous motors

SSC JE Electrical 2019 with solution SET-1
Identify the INCORRECT statement with regards to synchronous motors

The armature winding is placed on the stator

It is a self-starting machine

It is a constant speed motor

The field winding is placed on the rotor

The armature winding is placed on the stator

It is a self-starting machine

It is a constant speed motor

The field winding is placed on the rotor

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SSC JE Electrical 2019 with solution SET-1
A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

210 V

190 V

200 V

215 V

210 V

190 V

200 V

215 V

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SSC JE Electrical 2019 with solution SET-1
Prevention of interference with neighboring telephone lines can be done by:

Reducing skin effect

Using bundled conductors

Reducing corona

Transposing transmission lines

Reducing skin effect

Using bundled conductors

Reducing corona

Transposing transmission lines

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SSC JE Electrical 2019 with solution SET-1
Two coupled coils with L1 = L2 = 0.5H have a coupling coefficient of K = 0.75. The turn ratio N1 ⁄ N2 = ?

1

2

0.5

4

1

2

0.5

4

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SSC JE Electrical 2019 with solution SET-1
Which of the following lamps employs a bimetallic strip?

Incandescent lamp

Mercury vapor lamp

Sodium vapor lamp

Fluorescent lamp

Incandescent lamp

Mercury vapor lamp

Sodium vapor lamp

Fluorescent lamp

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SSC JE Electrical 2019 with solution SET-1
_____ power plant is the plant which uses a non-conventional source of energy

Nuclear

Wind

Hydroelectric

Thermal

Nuclear

Wind

Hydroelectric

Thermal

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 Identify the INCORRECT statement with regards to synchronous motors

SSC JE Electrical 2019 with solution SET-1 A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1 Prevention of interference with neighboring telephone lines can be done by:

SSC JE Electrical 2019 with solution SET-1 Two coupled coils with L1 = L2 = 0.5H have a coupling coefficient of K = 0.75. The turn ratio N1 ⁄ N2 = ?

SSC JE Electrical 2019 with solution SET-1 Which of the following lamps employs a bimetallic strip?

SSC JE Electrical 2019 with solution SET-1 _____ power plant is the plant which uses a non-conventional source of energy

SSC JE Electrical 2019 with solution SET-1
Identify the INCORRECT statement with regards to synchronous motors

SSC JE Electrical 2019 with solution SET-1
A 200 V d.c machine as Ra = 0.5 Ω and its full-load Ia= 20A. Determine the induced e.m.f when the machine acts as a motor

SSC JE Electrical 2019 with solution SET-1
Prevention of interference with neighboring telephone lines can be done by:

SSC JE Electrical 2019 with solution SET-1
Two coupled coils with L1 = L2 = 0.5H have a coupling coefficient of K = 0.75. The turn ratio N1 ⁄ N2 = ?

SSC JE Electrical 2019 with solution SET-1
Which of the following lamps employs a bimetallic strip?

SSC JE Electrical 2019 with solution SET-1
_____ power plant is the plant which uses a non-conventional source of energy