MGVCL Exam Paper (30-07-2021 Shift 2)
નીચે માંથી ક્યાં રુઢિપ્રયોગનો અર્થ 'છેતરવું' એવો થાય

આડા ઉતરવું
બે પાંદડે થવું
દસ મારવો
હથેળીમાં ચાંદ દેખાડવો

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MGVCL Exam Paper (30-07-2021 Shift 2)
A 3-phase motor load has a p.f. of 0.397 lagging. The two wattmeter method used to measure power show the input as 30 kW. Find the reading on each wattmeter.

W1 = 5 kW and W2 = 25 kW
W1 = -5 kW and W2 = 35 kW
W1 = 10 kW and W2 = 20 kW
W1 = -10 kW and W2 = 40 kW

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MGVCL Exam Paper (30-07-2021 Shift 2)
Which of the following does the term 'feeder automation' include?

feeder remote point voltage control
All of these
automatic reclosing
substation reactive power control

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MGVCL Exam Paper (30-07-2021 Shift 2)
Interposing current-transformer (CT) is used in differential protection of a transformer to

increase the sensitivity of the relay
match the standard ratio of CTs used on both sides of the transformer winding
minimize the effect of saturation of the main CTs
limit the main CT secondary current

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

0.8π V
zero
0.2π V
0.4π V

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