MGVCL Exam Paper (30-07-2021 Shift 3)
A three phase four pole 50 Hz induction motor has a rotor resistance of 0.02 Ω/phase and stand-still reactance of 0.5 Ω/phase. Calculate the speed at which the maximum torque is developed.

1500 rpm
1525 rpm
1440 rpm
1475 rpm

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MGVCL Exam Paper (30-07-2021 Shift 3)
Replace the braketed phrase grammatically and conceptually with the help of the given opation. If the given sentence is correct then select the option ’The given sentence is correct’.
The corono virus continued to spread, with the development of infections advancing quickly

The given sentence is correct
continue to spread, with the development of infections
continued for spread, with the development of infections
continued to spreading, with the development of infections

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MGVCL Exam Paper (30-07-2021 Shift 3)
નીચે પૈકી કેટલી કહેવતો વિરુદ્ધાથીઁ છે?.
1. પાંચ બોલે તે પરમેશ્વર - ગામને મોઢે ગળણું ન બંધાય.
2. ચોરની ચાર અને જોનારની બે - વિશ્વાસે વહાણ ચાલે.
3. ખાલી ચણો વાગે ઘણો - અધુરો ઘડો છલકાય.
4. હાથના કર્યા હૈયે વાગ્યા - દીવો લઈને કૂવામાં પડવું

બધી કહેવતો સમાનર્થી છે
કુલ 3
એક પણ નહિ
કુલ 1

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MGVCL Exam Paper (30-07-2021 Shift 3)
A 50 Hz synchronous generator is connected to an infinite bus through a line. The p.u. reactances of generator and the line are j0.4 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that of infinite bus is 1.0 p.u. The inertia constant of the generator is 4 MW-sec/MVA. Determine the frequency of natural oscillations if the generator is loaded to 60% of its maximum power transfer capacity and small perturbation in power is given.

1.2 Hz
0.8 Hz
1.6 Hz
1.8 Hz

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