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 ultra capacitor / super capacitor
Lead acid battery and Lithium ion battery
Lead acid battery and Capacitor

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 2)
A single phase motor connected to 415 V, 50 Hz supply takes 30 A at a power factor of 0.7 lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging.

66.32 µF
96.32 µF
76.32 µF
86.32 µF

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 2)
The miniature circuit breaker (MCB) with Class D trip characteristics trips instantaneously when the current flowing through it reaches ____ the rated current.

between 10 to 20 times
between 2 to 3 times
between 3 to 5 times
between 5 to 10 times

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 2)
In transformer, a Sweep Frequency Response Analysis (SFRA) test will help detect ____

Movement / damage to internal components
Age of the insulation
Aging by-products
Moisture in the windings

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP