Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 75% 50% 86%% 90% 75% 50% 86%% 90% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Per unit of any quantity is defined as base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in different units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in different units ANSWER DOWNLOAD EXAMIANS APP
Power Systems What should be the minimum depth (in metre)of cable trench to dug for laying of 1.1 kV? 0.75. 1.05. 0.90. 1.20. 0.75. 1.05. 0.90. 1.20. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Sum of the elements of row i equal to shunt admittances connected to bus i. If this summation is zero, indicates there is no mutual coupling shunt admittance None of these both 1 and 2 mutual coupling shunt admittance None of these both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems String chart is drawn between T on Y-axis and S and T on on X-axis both 1 and 2 nether 1 nor 2 temperature (T) on X- axis, sag(S) and tension (T) on Y-axis T on Y-axis and S and T on on X-axis both 1 and 2 nether 1 nor 2 temperature (T) on X- axis, sag(S) and tension (T) on Y-axis ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding? Solid. Resistance. Reactance. Peterson coil. Solid. Resistance. Reactance. Peterson coil. ANSWER DOWNLOAD EXAMIANS APP
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