GATE 2022 Power System Quiz 12

The maximum demand of a power plant is 60 MW. If the utilization factor is 0.7 and capacity factor is 0.6,  the reserve capacity (MW) and load factor respectively will be ?

A 50 kV surge is propagating from a overhead line of surge impedance 100 Ω into a cable of surge impedance 20 Ω. The coefficient of current reflection at the junction of overhead line and cable is

A 100 MVA, 33 kV,3 phase synchronous generator was subjected to different type of faults. The fault current are as follows

LG fault = 4500 A

LL fault = 2800 A

3 phase fault = 2100 A

The generator neutral is solidly grounded. The value of the zero sequence reactance of the generator is

A short 3-ϕ transmission line connected to a 33 kV, 50 Hz generating station at the sending end is required to supply a load of 8 MW at 0.8 power factor lagging at 30 kV at the receiving end. If the minimum transmission efficiency is to be limited to 95%. Find the value of inductance of line.

Two generator G₁ and G₂ are rated as 500 MW and 400 MW respectively are operating in parallel. The drooping characteristics of both generators are 5 % and 4 % respectively from no-load to full load, with no load frequency of 60 Hz. If 800 MW is being shared by both the generators, then determine the frequency of operation.