SSC JE Electrical 2019 with solution SET-2
If the number of poles in an 11 KV transmission line is 80, then how many disc insulators are required?

160
80
6
240

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SSC JE Electrical 2019 with solution SET-2
The combined inductance of two coils connected in a series is 0.6H and 0.1H, depending on the relative directions of the currents to the coils. If one of the coils when isolated has a self-inductance of 0.2 H, then calculate the natural inductance?

0.15 H
1.5 H
0.125 H
0.015 H

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SSC JE Electrical 2019 with solution SET-2
The flux while crossing air gap tends to bulge outwards, thereby increasing the effective area of the gap, this effect is known as

Hopkinson’s effect
Hall effect
Stroboscopic effect
Fringing effect

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SSC JE Electrical 2019 with solution SET-2
The scheduled speed of a train is______

Equal to average speed
Always greater than the average speed
Always less than the average speed
Equal to maximum speed

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SSC JE Electrical 2019 with solution SET-2
In the salient pole of the phase synchronous machine, the rotor will have

Larger diameter, shorter axial length
Smaller diameter, larger axial length
Larger diameter, larger axial length
Smaller diameter, smaller axial length

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SSC JE Electrical 2019 with solution SET-2
 If a transformer has N1 = N2 = 1 : 1, then the transformer is a/an

Isolation transformer
Power transformer
Current transformer
Potential transformer

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