Power Systems Condition for zero voltage regulation is cosφ = X/R tanφ = X/R cosφ = R/X tanφ = R/X cosφ = X/R tanφ = X/R cosφ = R/X tanφ = R/X ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments? 25 to 35 kV 33 to 50 kV any voltage above 33 kV 31.35 to 34.65 kV 25 to 35 kV 33 to 50 kV any voltage above 33 kV 31.35 to 34.65 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (1 + j2 ) pu (4 + j8 ) pu (0.5 + j1 ) pu (2 + j4 ) pu (1 + j2 ) pu (4 + j8 ) pu (0.5 + j1 ) pu (2 + j4 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 50 Hz is 1 kW/km per phase. What is the corona loss at 60 Hz in kW/km per phase? 1.25 1 1.13 0.89 1.25 1 1.13 0.89 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection switch is used to provide protection against temperature. overload. over voltage. short circuit. temperature. overload. over voltage. short circuit. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power plants the size of coal after crushing 200 - 205 mm. 40 mm. 300 mm. 20 - 25 mm. 200 - 205 mm. 40 mm. 300 mm. 20 - 25 mm. ANSWER DOWNLOAD EXAMIANS APP
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