MGVCL Exam Paper (30-07-2021 Shift 1)
Determine maximum permissible load which a 15 MVA, ONAN cooled transformer to IS : 2026 can take for 6 hr, if the initial load on it was 12 MVA. The weighted ambient temperature is 20˚C. Assume the permissible load kVA as a fraction of rated kVA is 1.25.

9.6 MVA
12 MVA
18.75 MVA
15 MVA

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MGVCL Exam Paper (30-07-2021 Shift 1)
A thermistor is inherently suitable for temperature measurement involving

low span and low sensitivity
high span and low sensitivity
high span and high sensitivity
low span and high sensitivity

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MGVCL Exam Paper (30-07-2021 Shift 1)
For sea water with σ = 5 mho/m and ε_r = 80, what is the distance for which ratio signal can be transmitted with 90% attenuation at 25 kHz?

0.327 m
3.27 m
327 m
32.7 m

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

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