MGVCL Exam Paper (30-07-2021 Shift 1)
___ is the short time reduction in the rms voltage between 0.1 to 0.9 p.u for a duration of ___

Voltage swell, 0.5 cycle to 1 minute.
Voltage sag, 0.5 cycle to 1 minute.
Voltage sag, greater than 1 minute
Voltage swell, greater than 1 minute

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MGVCL Exam Paper (30-07-2021 Shift 1)
Murray loop test is performed on a faulty cable 300 m long. At balance, the resistance connected to the faulty core was set at 15 Ω and the resistance of the resistor connected to the sound core was 45 Ω. Calculate the distance of the fault point from the test end.

450 m
150 m
75 m
225 m

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MGVCL Exam Paper (30-07-2021 Shift 1)
While selecting the gas for a circuit breaker, the property of gas that should be considered is its
(i) dielectric strength
(ii) non-inflammability
(iii) non-toxicity

(i) and (ii) only
(i), (ii) and (iii)
(i) only
(i) and (iii) only

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MGVCL Exam Paper (30-07-2021 Shift 1)
A grid interactive solar system:

works only when the grid fails
always supplies power to the grid
always receives power from the grid
supplies power to as well as receives power from the grid as required

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