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:

0.5
0.8
1
0.9

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SSC JE Electrical 2019 with solution SET-1
 Two decimal coils A and B of 1000 turns each lies in the parallel plane such that 80% of the flux produced by one coil links with the other. If a current of 5A flowing in A produces a flux of 0.05 mWb, then the flux linking with coil B is:

0.004 mWb
0.4 mWb
0.04 mWb
4 mWb

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SSC JE Electrical 2019 with solution SET-1
 What is the reason behind using a centrifugal switch in a single-phase induction motor?

To protect the motor from overloading
To cut-off the starting winding at an appropriate instant
To out in the capacitor during running conditions
To improve the starting performance of the motor

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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

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

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SSC JE Electrical 2019 with solution SET-1
 What would the total loss of the 2kVA transformer corresponding to maximum efficiency be, provided the transformer has the iron of 150 W and full-load copper loss of 250W?

500 W
300 W
100 W
400 W

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