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

Match the following shown in figure

C = (ii) & (1)

A = (i) & (3)

A = (iii) & (2)

B = (ii) & (1)

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A generating station having 'n' section busbars each rated at Q kVA with ×% reactance is connected on the tie-bars systems through busbar reactances of b%. Determine the short circuit kVA if a 3-phase fault takes place on one section.

Q[(1/x) + (n+1)/(bn+x)]

Q[(1/x) + (n+1)/(bn-x)]

Q[(1/x) + (n-1)/(bn+x)]

Q[(1/x) - (n+1)/(bn-x)]

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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.

302.5 V

306.5 V

304.5 V

308.5 V

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A single phase motor connected to 415 V, 50 Hz supply takes 30 A at a power factor of 0.7 lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging.

96.32 µF

76.32 µF

86.32 µF

66.32 µF

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YOUR ANSWER : ?

The single line diagram of the simple power system is shown in figure the corresponding reactance diagram is

B

C

D

A

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The Great Barrier Reef is located in which country?

Australia

Canada

Germany

India

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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.

(IXcosφ_r + IRsinφ_r)/V_r

(IXcosφ_r - IRsinφ_r)/V_r

(IRcosφ_r + IXsinφ_r)/V_r

(IRcosφ_r - IXsinφ_r)/V_r

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In transformer, a Sweep Frequency Response Analysis (SFRA) test will help detect ____

Aging by-products

Moisture in the windings

Movement / damage to internal components

Age of the insulation

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Which one of the following is the committee on poverty estimation?

Ad hoc committe

Tendulkar committee

Karve committee

S.S.Tarapore committee

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આપને કાઈ મશીન નથી કે અમુક ગોઠવણો પ્રમાણે કાર્ય જ કરીએ. - ઉપરોક્ત વાક્ય જુદાં પાડવા ક્યાં સંયોજકો કાઢવા પડે.

કાઈ

અમુક

કે

જ

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