MGVCL Exam Paper (30-07-2021 Shift 2)
A three-phase 400 V, 6-pole, 50 Hz squirrel-cage induction motor is running at a slip of 5%. The speed of rotor with respect to stator magnetic field and speed of the stator magnetic field with respect to rotor magnetic field are

950 rpm, 1000 rpm
-50 rpm, zero
-50 rpm, 1000 rpm
950 rpm, zero

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MGVCL Exam Paper (30-07-2021 Shift 2)
The expression for voltage regulation of a short transmission line for leading power factor is given by: ____, where, 'I' is the line current, 'V_r' is the receiving end voltage, 'R' is the line resitance and 'X' is the line reactance.

(IRcosφ_r - IXsinφ_r)/V_r
(IRcosφ_r + IXsinφ_r)/V_r
(IXcosφ_r - IRsinφ_r)/V_r
(IXcosφ_r + IRsinφ_r)/V_r

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MGVCL Exam Paper (30-07-2021 Shift 2)
A short-shunt dc compound generator supplies 50 A at 300 V. If the shunt field resistance, series field resistance and armature resistance are 30 Ω, 0.03Ω, and 0.05 Ω respectively, determine the e.m.f. generated.

308.5 V
304.5 V
302.5 V
306.5 V

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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

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

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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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