MGVCL Exam Paper (30-07-2021 Shift 2)
Operating system is

a layer between the user and the hardware
a program that runs during log off
a program that runs for short duration
a program that runs during log off

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MGVCL Exam Paper (30-07-2021 Shift 2)
In circuit breaker, the term MCCB stands for

modern closed circuit breaker
moulded case circuit breaker
miniature compact circuit breaker
miniature case circuit breaker

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MGVCL Exam Paper (30-07-2021 Shift 2)
Interposing current-transformer (CT) is used in differential protection of a transformer to

match the standard ratio of CTs used on both sides of the transformer winding
increase the sensitivity of the relay
limit the main CT secondary current
minimize the effect of saturation of the main CTs

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