MGVCL EXAM PAPER (30-07-2021 SHIFT 2) QUIZ

In a test by Murray loop for ground fault on 600 m of cable having a resistance of 1.5 Ω/km, the faulty cable is looped with a sound cable of the same length and area of cross section. If the ratio of the other two arms of the testing network at balance is 3 : 1, find the distance of the fault from the testing end of cables.

200 m

100 m

300 m

400 m

TRUE ANSWER : ?
YOUR ANSWER : ?

સ્વાધીન' નો વિરોધીભાસી શબ્દ કયો છે?

કુવાધીન

અસ્વાધીન

નીસ્વધીન

પરાધીન

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YOUR ANSWER : ?

Which of the following is linux operating system?

Fedora

IBM-AIX

HP-UX

MacOS

TRUE ANSWER : ?
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A single phase 240 V, 1 kW heater is connected across single phase 240 V, 50 Hz supply through an SCR. For firing angle delay of 90˚, calculate the power absorbed in the heater element.

300 W

275 W

225 W

250 W

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In transformer, bushing failure occurs due to<br/>(i) transformer vibrations<br/>(ii) dielectric losses<br/>(ii) partial discharge

(i), (ii) and (iii)

(ii) and (iii) only

(i) and (ii) only

(i) and (iii) only

TRUE ANSWER : ?
YOUR ANSWER : ?

A three-phase, 12 kV, 50 Hz and 300 kW load is operating at 0.8 pf lag. If the pf is to be improved to unity, using star connected capacitor, the per phase value of the reactive VAR required is:

75 kVAR

50 kVAR

25 kVAR

100 kVAR

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Interposing current-transformer (CT) is used in differential protection of a transformer to

match the standard ratio of CTs used on both sides of the transformer winding

increase the sensitivity of the relay

minimize the effect of saturation of the main CTs

limit the main CT secondary current

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the full form of UN in 'UN Human Rights Prize'?

Uniform Nacional

Uniformed Nations

Unity Nation

United Nations

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If the velocity of electromagnetic wave in free space is 3 × 10⁸ m/s, then the velocity in a medium with εr of 4.5 and μr of 2 would be

3 × 10⁸ m/s

1 × 10⁸ m/s

27 × 10⁸ m/s

9 × 10⁸ m/s

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Vikram Seth is associated with which of the following fields?

Sports

Politician

Literature

Music

TRUE ANSWER : ?
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