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MGVCL Exam Paper (30-07-2021 Shift 2)

MGVCL Exam Paper (30-07-2021 Shift 2)
પાણી : પાણીગ્રહણ :: હસ્ત : ???

પ્રેમાલાપ
વિવાહ
હસ્તમેળાપ
છુટાછેડા

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MGVCL Exam Paper (30-07-2021 Shift 2)
In transformer, bushing failure occurs due to
(i) transformer vibrations
(ii) dielectric losses
(ii) partial discharge

(i) and (iii) only
(i) and (ii) only
(ii) and (iii) only
(i), (ii) and (iii)

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MGVCL Exam Paper (30-07-2021 Shift 2)
A MOSFET rated for 15 A, carries a periodic current as shown in figure. The ON state resistance of the MOSFET is 0.15 Ω. The average ON state loss in the MOSFET is

15 W
7.5 W
3.8 W
33.8 W

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Ip = 10 A
Ton = π
T = 2π

Iavg = Ip*√(Ton/T)
Iavg = 10*√(1/2)
= 7.07 A
The average ON state loss in MOSFET, P = Iavg²*R
P = 7.07²*0.15
P = 7.5 W

MGVCL Exam Paper (30-07-2021 Shift 2)
The relation between electric intensity E, voltage applied V and the distance d between the plates of a parallel plate condenser is

E = V/d
E = V x d
E = Vx(d)²
E = V/(d)²

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The relation between electric intensity E, voltage applied V and the distance d between the plates of a parallel plate condenser is given by:
V = E*L
E = V/L

MGVCL Exam Paper (30-07-2021 Shift 2)
Magnetic tape is not practical for applications where data must be quickly recalled because tape is a/an____.

Sequential access medium
None of these
expensive storage medium
Random access medium

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MGVCL Exam Paper (30-07-2021 Shift 2)
If all the devices are connected to a central hub, then the topology is called

Tree Topology
Tree Topology
Bus Topology
Star Topology

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