MGVCL Exam Paper (30-07-2021 Shift 2)
In a typical DC micro grid, hybrid storage system is a combination of

None of these
Lead acid battery and Capacitor
Lead acid battery and ultra capacitor / super capacitor
Lead acid battery and Lithium ion battery

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MGVCL Exam Paper (30-07-2021 Shift 2)
Which one of the following statement with respect to Aerial Bunched Cables (ABC) system is TRUE?

ABC system requires more clearance, insulators and high maintenance.
The overall cost of the ABC system is very high as compared to the bare conductor system.
ABC system is not suitable for rural electrification which are situated in difficult terrain, hills, forests and coastal areas.
ABC system totally eliminates the fault on lines and thereby improving the quality of supply.

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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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MGVCL Exam Paper (30-07-2021 Shift 2)
A circular loop has its radius increasing at a rate of 2 m/s. The loop is placed perpendicular to a constant magnetic field of 0.1 Wb/m². When the radius of the loop is 2 m, the emf induced in the loop will be

0.8π V
0.4π V
0.2π V
zero

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