Power Systems A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead -10% 6.92% -6.92% 10% -10% 6.92% -6.92% 10% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? Low ratio of puncture strength to flash over. High relative permittivity Both 1 and 2 High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. High relative permittivity Both 1 and 2 High ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following materials can be used as coolant Any of above. Helium. CO2. Heavy water. Any of above. Helium. CO2. Heavy water. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which following statement are not true for line parameters R, L, G and C of transmission line All of above. LC = μ ε and RG = σ ε. G = 1/R where G is conductance of line. Both R and G depend on the conductivity of conductor forming the line. All of above. LC = μ ε and RG = σ ε. G = 1/R where G is conductance of line. Both R and G depend on the conductivity of conductor forming the line. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For flat voltage profile system, voltage regulation is 0% 100% any of the above 50% 0% 100% any of the above 50% ANSWER DOWNLOAD EXAMIANS APP
Power Systems When bundle conductor are used in place of single conductor the effective inductance and capacitance will respectively decrease and remain unaffected. increase and remain unaffected. increase and decrease. decrease and increase. decrease and remain unaffected. increase and remain unaffected. increase and decrease. decrease and increase. ANSWER DOWNLOAD EXAMIANS APP
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