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GATE EE 2022: Power System Quiz 12 (App update required to attempt this test)
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Question 1
An alternator has reactance =0.2pu, =0.4pu and =0.8 pu. Then find the ratio between subtransient rms fault current and SCR of the machine ?
Question 2
The power output from a hydro-electric power plant depends on three parameters.
Question 3
A 100KM, 550KV line has a series reactance of 0.45Ω/KM and power transmitted is 1050MW. It is connected to a source bus which has a short circuit capacity of 5050MW. Determine the source voltage when the load is disconnected to load power factor of unity.
Question 4
Generator delivering 1 p.u. power to an infinite bus and operating at 50 Hz frequency. If pre-fault maximum power delivered is 2 p.u. and during fault maximum power delivered is 0.5 p.u. The critical clearing angle in degrees if maximum power delivered after the clearance of the fault is 1.5 p.u.
Question 5
In the figure shown below, the system is operating at 50 Hz, the nature of H = 4 .2 MW-sec/MVA . The generator is loaded to 80% of its maximum limit. The frequency of natural oscillation for small distributions is _______Hz.
Question 6
In the figure shown, self-impedances of the two transmission lines are 1.5j p.u. each, and Zm = 0.5j p.u. is the mutual impedance. Bus voltages shown in the figure are in p.u. Given that δ > 0, the maximum steady-state real power that can be transferred in p.u from Bus-1 to Bus-2 is:
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Nov 24ESE & GATE EE