MGVCL Exam Paper (30-07-2021 Shift 2)
હુ ગીત ગાઈશ' ને કર્મણીમાં ફેરવો.

મારાથી ગીત ગવાશે
હુ ગીતને ગાઈશ
ગીતને હુ જ ગાઇશ
ગીતને હુ ગાઈશ

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MGVCL Exam Paper (30-07-2021 Shift 2)
The magnitude of the generator earth-fault current is limited by

controlling field exciter
using higher rating CTs
inserting the stabilizing resistance in series with the relay
inserting suitable resistance in neutral grounding circuit

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MGVCL Exam Paper (30-07-2021 Shift 2)
The miniature circuit breaker (MCB) with Class D trip characteristics trips instantaneously when the current flowing through it reaches ____ the rated current.

between 10 to 20 times
between 5 to 10 times
between 3 to 5 times
between 2 to 3 times

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MGVCL Exam Paper (30-07-2021 Shift 2)
A 3-phase motor load has a p.f. of 0.397 lagging. The two wattmeter method used to measure power show the input as 30 kW. Find the reading on each wattmeter.

W1 = -5 kW and W2 = 35 kW
W1 = 10 kW and W2 = 20 kW
W1 = 5 kW and W2 = 25 kW
W1 = -10 kW and W2 = 40 kW

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MGVCL Exam Paper (30-07-2021 Shift 2)
The voltage applied to a transformer primary is increased keeping V/f constant. With this, the core loss ____ and the magnetizing current (Im) ____

decreases, increases
increases, increases
remains constant, decreases
increases, remains constant

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