MGVCL Exam Paper (30-07-2021 Shift 3)
A conductor having surface density is embedded in a dielectric medium of permittivity. The electric field in the medium is E. If it is known that the pressure p on the conductor surface is equal to the electric energy density in the medium, then p (in SI unit)is given by

σ²/(2ε)
σ²/(2πε)
σ²/(4π)
σ/(4πε)

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MGVCL Exam Paper (30-07-2021 Shift 3)
નીચે પૈકી કેટલી કહેવતો વિરુદ્ધાથીઁ છે?.
1. પાંચ બોલે તે પરમેશ્વર - ગામને મોઢે ગળણું ન બંધાય.
2. ચોરની ચાર અને જોનારની બે - વિશ્વાસે વહાણ ચાલે.
3. ખાલી ચણો વાગે ઘણો - અધુરો ઘડો છલકાય.
4. હાથના કર્યા હૈયે વાગ્યા - દીવો લઈને કૂવામાં પડવું

બધી કહેવતો સમાનર્થી છે
કુલ 3
કુલ 1
એક પણ નહિ

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MGVCL Exam Paper (30-07-2021 Shift 3)
Consider the following statements and choose the correct option.
Statement 1: DVR (Dynamic Voltage Restorer) is a series compensation device.
Statement 2: DVR protects sensitive electric load from power quality problems such as voltage sags, swells, unbalance and distortion through power electronic controllers."
Statement 2: In a synchronous motor, at no-load condition, and with normal excitation the armature current

Both Statement 1 and Statement 2 are TRUE
Statement 1 is FALSE and Statement 2 is TRUE
Both Statement 1 and Statement 2 are FALSE
Statement 1 is TRUE and Statement 2 is FALSE

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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.

50%
80%
75%
60%

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MGVCL Exam Paper (30-07-2021 Shift 3)
In a series RLC circuit, the supply voltage is 230 V at 50 Hz. The resonant current is 2 A at the resonant frequency of 50 Hz. Under the resonant condition, the voltage across the capacitor is measured to be equal to 460 V. What are the values of L and C?

0.73 H and 13.85 pF
0.53 mH and 15.83 pF
0.53 H and 15.83 pF
0.73 mH and 13.85 pF

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