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

0.52
0.82
0.72
0.62

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MGVCL Exam Paper (30-07-2021 Shift 2)
1. આપને મુખ્યમત્રીએ ખાસ કામ માટે નિયુક્ત કર્યા છે.
2. તેનાથી આંખો ઝીણી કરાઈ
3. પ્રધાનમંત્રીએ સ્કુલનું ઉદ્રઘાટન કર્યું.
આરોપીએ બધા ગુના કબુલ કરી લીધા.
ઉક્ત વાક્યોમાં કેટલા કર્મણી વાક્યો પ્રયોગના છે?

બધા જ વાક્યો કર્મણી વાક્ય પ્રયોગના છે
કુલ 1
કુલ 2
બધા જ કર્તરી વાક્ય પ્રયોગના છે

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MGVCL Exam Paper (30-07-2021 Shift 2)
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
both 100 W lamp (L1) and 150 W lamp (L2) becomes dim
100 W lamp (L1) becomes brighter and 150 W lamp (L2) becomes dim
both 100 W lamp (L1) and 150 W lamp (L2) becomes brighter

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MGVCL Exam Paper (30-07-2021 Shift 2)
Consider the following statements associated with Buchholz's relays.
Statement 1: Buchholz's relay is a current operated device.
Statement 2 : Buchholz's relay is placed between the transformer tank and the conservator.

Statement 1 is TRUE and Statement 2 is FALSE
Both Statement 1 and Statement 2 are TRUE
Both Statement 1 and Statement 2 are FALSE
Statement 1 is FALSE and Statement 2 is TRUE

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