In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

1

0.5

0.8

0.9

1

0.5

0.8

0.9

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SSC JE Electrical 2019 with solution SET-1
An electric motor in which both the rotor and stator fields rotate with the same speed is called

DC motor

Synchronous motor

Universal motor

Induction motor

DC motor

Synchronous motor

Universal motor

Induction motor

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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

The field winding is placed on the rotor

It is a constant speed motor

The armature winding is placed on the stator

It is a self-starting machine

The field winding is placed on the rotor

It is a constant speed motor

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SSC JE Electrical 2019 with solution SET-1
If N = linkage flux, then the linkage flux per unit current is defined as:

Inductive reactance

Inductance

Leakage coefficient

Magnetomotive force

Inductive reactance

Inductance

Leakage coefficient

Magnetomotive force

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

Transposing transmission lines

Reducing corona

Reducing skin effect

Using bundled conductors

Transposing transmission lines

Reducing corona

Reducing skin effect

Using bundled conductors

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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

190 V

200 V

215 V

210 V

190 V

200 V

215 V

210 V

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1 An electric motor in which both the rotor and stator fields rotate with the same speed is called

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 If N = linkage flux, then the linkage flux per unit current is defined as:

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 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
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1
An electric motor in which both the rotor and stator fields rotate with the same speed is called

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
If N = linkage flux, then the linkage flux per unit current is defined as:

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
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