MGVCL Exam Paper (30-07-2021 Shift 2)
A 1000 kVA ONAN cooled transformer has a load of 500 kVA throughout the day except for a period of 4 hours. What is the permissible overload for a duration of four hours. Assume the permissible load kVA as a fraction of rated kVA is 1.24.

1240 kVA
620 kVA
2480 kVA
930 kVA

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MGVCL Exam Paper (30-07-2021 Shift 2)
Thermocouples can be connected in series/parallel to obtain greater sensitivity called as

None of these
Thermistor
Thermometer
Thermopile

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a power network, 400 kV is recorded at a 415 kV bus. A 50 MVAR, 415 kV shunt reactor is connected to the bus. What is the reactive power absorbed by the shunt reactor?

46.45 MVAR
66.45 MVAR
76.45 MVAR
56.45 MVAR

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MGVCL Exam Paper (30-07-2021 Shift 2)
Which one of the following statement is TRUE?

Underground cables are laid at sufficient depth to avoid being unearthed easily due to removal of soil.
In the cables, the location of fault is usually found out by comparing the capacitances of insulated conductors.
In the cables, sheaths are used to provide enough strength.
The current carrying capacity of cables in DC is less than that in AC.

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MGVCL Exam Paper (30-07-2021 Shift 2)
A coil having an inductance of 100 mH is magnetically coupled to another coil having an inductance of 900 mH. The coefficient of coupling between the coils is 0.45. Calculate the equivalent inductance if the two coils are connected in series opposing.

730 mH
1270 mH
932 mH
1135 mH

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