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MGVCL Exam Paper (30-07-2021 Shift 3)

MGVCL Exam Paper (30-07-2021 Shift 3)
નીચે પૈકી 'ઓસોડ' નો સમાનર્થી શબ્દ કયો છે?

અનરવું
વૃંદા
ઔષધ
અમર

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 3)
What items should be considered when looking at a site for a new transformer installation?

All of these
Environmental impact
Site Survey
Soils Report

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Points should be consider for new transformer installation:
Location
Environmental impact
Soils condition
Survey of land
Ventilation
Grounding
Wiring
Fluid check
Inspection

MGVCL Exam Paper (30-07-2021 Shift 3)
The process of peeling of rocks into layers is called

Brachans
Exfoliation
Delta
Sublimation

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MGVCL Exam Paper (30-07-2021 Shift 3)
A DC shunt generator has an induced voltage of 220 V on open circuit. When the machine is on load the terminal voltage is 200 V. Find the load current if the field resistance is 100 Ω and armature resistance is 0.2 Ω.

96 A
102 A
98 A
104 A

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Voltage equation for Dc shunt generator,
Eb = V + Ia*Ra
V = Ish*Rsh
Ish = 200/100
= 2 A
Eb = V + Ia*Ra
20 = Ia*Ra
Ia = 20/0.2
= 100 A
I = 100 - 2
= 98 A

MGVCL Exam Paper (30-07-2021 Shift 3)
The threshold voltage of an N-channel enhancement mode MOSFET is 0.5 V. When the device is biased at a gate voltage of 3 V, pinch-off would occur at a drain voltage of

2.5 V
4.5 V
3.5 V
1.5 V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Equation is given by:
Vds = Vgs - Vt
Vds = 3 - 0.5
Vds = 2.5 V

MGVCL Exam Paper (30-07-2021 Shift 3)
The magnetizing inrush current in a transformer is rich in the harmonic component.

fifth
second
seventh
third

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

2nd harmonics contains - 60 to 55 %
3rd harmonics contains - 40 - 50%

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