Power Systems What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ? 200 : 5 / √3. 120 : 6 / √3. 100 : 5 / √3. 150 : 4 / √3. 200 : 5 / √3. 120 : 6 / √3. 100 : 5 / √3. 150 : 4 / √3. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of the cable is doubled, its capacitance C will be doubled. one-fourth. unchanged. one-half. doubled. one-fourth. unchanged. one-half. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of low alternator efficiency low steam turbine mechanical efficiency high energy loss in condenser high energy loss in boilers low alternator efficiency low steam turbine mechanical efficiency high energy loss in condenser high energy loss in boilers ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 220 kV system, the inductance and capacitance up to the circuit breaker location are 25 mH and 0.025 µF respectively. The value of resistor required to be connected across the breaker contacts which will give no transient oscillations, is 1000 Ω 500 Ω 250 Ω 25 Ω 1000 Ω 500 Ω 250 Ω 25 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Nuclear reactors usually employ both of A and B. fission. none of above. fusion. both of A and B. fission. none of above. fusion. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An hydro-graph indicates the average run off during the period. the maximum and minimum run off during the period. the discharge at any time during the period under consideration. All of these the average run off during the period. the maximum and minimum run off during the period. the discharge at any time during the period under consideration. All of these ANSWER DOWNLOAD EXAMIANS APP
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