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

A 1000 kVA ONAN cooled transformer has a load of 500 kVA throughout the day except for a period of 4 hours. What is the permissible overload for a duration of four hours. Assume the permissible load kVA as a fraction of rated kVA is 1.24.

2480 kVA

620 kVA

930 kVA

1240 kVA

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of these is not a monitoring and diagnostic test for transformer oil?

Dissolved Gas Analysis

Dissolved Metals Analysis

Furanic Compound Analysis

Volatility Level Analysis

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YOUR ANSWER : ?

In a 3-phase, 4-wire, 400/230 V system, a lamp (L1) of 100 W is connected to one phase and neutral and a lamp (L2) of 150 W is connected to the second pahse and neutral. If the neutral wire is disconnected accidently, then

100 W lamp (L1) becomes dim and 150 W lamp (L2) becomes brighter

100 W lamp (L1) becomes brighter and 150 W lamp (L2) becomes dim

both 100 W lamp (L1) and 150 W lamp (L2) becomes dim

both 100 W lamp (L1) and 150 W lamp (L2) becomes brighter

TRUE ANSWER : ?
YOUR ANSWER : ?

Operating system is

a program that runs during log off

a program that runs for short duration

a layer between the user and the hardware

TRUE ANSWER : ?
YOUR ANSWER : ?

____are long-term (hours-long) voltage sags caused by system overload.

Voltage dips

Voltage surges

Brownouts

Black outs

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YOUR ANSWER : ?

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

0.4π V

zero

0.8π V

0.2π V

TRUE ANSWER : ?
YOUR ANSWER : ?

A delta-connected balanced three-phase load is supplied from a three-phase, 400 V supply. The line current is 20 A and the power taken by the load is 10 kW. Find the power factor.

0.62

0.52

0.72

0.82

TRUE ANSWER : ?
YOUR ANSWER : ?

Who started the daily newspaper 'National Herald' in 1938?

Jawaharlal Nehru

Dadabhai Naoroji

Ram Mohan Roy

Subhas Chandra Bose

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YOUR ANSWER : ?

Consider a solar PV plant with the following specific conditions: Analysis period: 1 year Measured average solar irradiation intensity in 1 year: 120 kWh/m² Generator area of the PV plant: 10 m² Efficiency factor of the PV modules: 15% Electrical energy actually exported by plant to grid: 110 kWh Calculate the performance ratio.

0.8111

0.6111

0.7111

0.5111

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YOUR ANSWER : ?

નીચે માંથી ક્યાં રુઢિપ્રયોગનો અર્થ 'છેતરવું' એવો થાય

બે પાંદડે થવું

હથેળીમાં ચાંદ દેખાડવો

આડા ઉતરવું

દસ મારવો

TRUE ANSWER : ?
YOUR ANSWER : ?