MGVCL Exam Paper (30-07-2021 Shift 3)
Consider a solar PV plant with the following specific conditions:
Analysis period: 1 year
Measured average solar irradiation intensity in 1 year: 150 kWh/m²
Generator area of the PV plant: 10 m² Efficiency factor of the PV modules: 15%
Electrical energy actually exported by plant to grid: 135 kWh
Calculate the performance ratio.

75%
60%
50%
80%

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MGVCL Exam Paper (30-07-2021 Shift 3)
A 50 Hz synchronous generator is connected to an infinite bus through a line. The p.u. reactances of generator and the line are j0.4 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that of infinite bus is 1.0 p.u. The inertia constant of the generator is 4 MW-sec/MVA. Determine the frequency of natural oscillations if the generator is loaded to 60% of its maximum power transfer capacity and small perturbation in power is given.

1.8 Hz
1.6 Hz
0.8 Hz
1.2 Hz

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MGVCL Exam Paper (30-07-2021 Shift 3)
In which of the following situations, there is no need to provide directional overcurrent protection.

ring main
single end fed, parallel feeder
double end fed, single feeder
single end fed, single feeder

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MGVCL Exam Paper (30-07-2021 Shift 3)
મેં મીઠાઈ બનાવી'. વાક્યને કેવળ ક્રિયાપદની પ્રેરક રચના કઈ છે?

મેં મીઠાઈ બનાવડાવી.
મેં મીઠાઈ બનાવી લીધી.
મીઠાઈ તો હું જ બનવું ને!
હું મીઠાઈ બનાવવા લાગી.

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