SSC JE Electrical 2019 with solution SET-1
 Which of the following is the correct relation regarding coupled coils?

M = (L1 + L2)/2
M > (L1L2)0.5
M ≤ (L1L2)0.5
M = (L1 − L2)/2

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SSC JE Electrical 2019 with solution SET-1
 In an AC network, the load connected is (10 + j10). The phase relation between the voltage applied and the current through the load is:

Voltage lags current by 30°
Voltage and current are in phase with each other
Voltage leads current by 45°
Voltage lags current by 45°

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SSC JE Electrical 2019 with solution SET-1
 The average value of a sinusoidal wave is:

0.637 × maximum value
√2 × maximum value
2 × maximum value
0.5 × maximum value

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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:

Lagging
Zero
Unity
Leading

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SSC JE Electrical 2019 with solution SET-1
 Two bulbs of rating 230V, 60W, and 230V, 100W are connected in parallel across supply mains, Identify the correct statement

The 60W bulb will glow brighter
Both will glow equally bright
Neither bulb will glow
The 100W bulb will glow brighter

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