A power station has a maximum demand of 15 MW. The plant capacity is 20 MW. Find the reserve capacity of the plant? 20 MW 5 MW 10 MW 15 MW TRUE ANSWER : ? YOUR ANSWER : ?
Gross head of an hydroelectric power station is all of above. the difference of water level between the level in storage and tail race. the height of water level in the river where the storage is provided. the height of water level in the river where the tail race is provided. TRUE ANSWER : ? YOUR ANSWER : ?
The power level of nuclear reactor can be increase by ( K = multiplication factor ) lowering the value of K below and keeping at that lowered value. raising the value of K above 1, but later bringing it back to K = 1. lowering the value of K below 1 but later bringing it back to K = 1. raising the value of K above 1 and keeping it at raised value. TRUE ANSWER : ? YOUR ANSWER : ?
If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is 0.5 pu 0.8 pu 0.4 pu 1 pu TRUE ANSWER : ? YOUR ANSWER : ?
Frequencies must be same in which of the following line to exchange the power from one place to other place ? No need of same frequency for exchange of power Synchronous line both 1 and 2 Asynchronous line TRUE ANSWER : ? YOUR ANSWER : ?
Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF? 400 Ω 160 Ω 200 Ω 800 Ω TRUE ANSWER : ? YOUR ANSWER : ?
Water hamming process in pen-stocks results in noise increases. pressure increases. noise increases, pressure increases, velocity decreases. None of these TRUE ANSWER : ? YOUR ANSWER : ?
A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? -0.92 -0.56 0.56 0.92 TRUE ANSWER : ? YOUR ANSWER : ?
Peterson coil is used in case of transmission line for reduce ferranti effect improve power factor increase the voltage level compensation of arcing grounds TRUE ANSWER : ? YOUR ANSWER : ?
In a 400 KV network, 360 KV is recorded at a 400 KV bus. The reactive power absorbed by shunt rated for 50 MVAr, 400 KV connected at the bus is 40.5 MVAr. 45 MVAr. 55.56 MVAr. 61.73 MVAr. TRUE ANSWER : ? YOUR ANSWER : ?