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GATE 2020: Power Systems Rapid Revision Quiz 2
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Question 1
and 
are steady state d-axis synchronous reactance, transient d-axis reactance and sub-transient d-axis reactance of a synchronous machine respectively. Which of the following statements is true? Question 2
To increase distance among transmission line, the lines should carry:
Question 3
A three-bus network is shown in the figure below indicating the p.u. impedances of each element.
The Bus admittance matrix, Y-bus, of the network is
The Bus admittance matrix, Y-bus, of the network is
Question 4
A three-phase cable is supplying 800kW and 600kVAr to an inductive load, it is intended to supply an additional resistive load of 100kW through the same cable without increasing the heat dissipation in the cable, by providing a three-phase bank of capacitors connected in star across the load. Given the line voltage is 3.3kV, 50Hz, the capacitance per phase of the bank, expressed in microfarads, is----------------
Question 5
A three phase star-connected load is drawing power at a voltage of 0.9 pu and 0.8 power factor lagging. The three phase base power and base current are 100MVA and 437.38A respectively. The line-to line load voltage in kV is ___________.
Question 6
A 150MVA, 11kV, 50Hz, 4-pole generator is having inertia constant of 5MJ/MVA. If the acceleration of rotor is 850 elec. degree/s2 for 4 cycles, then find the change in the speed of rotor at the end of transient period of 4 cycles?
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Dec 25ESE & GATE EE
