MGVCL Exam Paper (30-07-2021 Shift 2)
Which one of these is not a monitoring and diagnostic test for transformer oil?

Dissolved Gas Analysis
Dissolved Metals Analysis
Furanic Compound Analysis
Volatility Level Analysis

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MGVCL Exam Paper (30-07-2021 Shift 2)
A short-shunt dc compound generator supplies 50 A at 300 V. If the shunt field resistance, series field resistance and armature resistance are 30 Ω, 0.03Ω, and 0.05 Ω respectively, determine the e.m.f. generated.

308.5 V
302.5 V
304.5 V
306.5 V

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

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

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MGVCL Exam Paper (30-07-2021 Shift 2)
The expression for voltage regulation of a short transmission line for leading power factor is given by: ____, where, 'I' is the line current, 'V_r' is the receiving end voltage, 'R' is the line resitance and 'X' is the line reactance.

(IXcosφ_r - IRsinφ_r)/V_r
(IRcosφ_r - IXsinφ_r)/V_r
(IXcosφ_r + IRsinφ_r)/V_r
(IRcosφ_r + IXsinφ_r)/V_r

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