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 -6.92% -10% 6.92% 10% -6.92% -10% 6.92% 10% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 1-phase transmission line has an impedance (3+4j) Ω . Find the power factor of the load for achieving maximum and zero voltage regulation? 0.6 lag and 0.8 lead 0.8 lag and 0.6 lead 0.6 lag and 0.6 lead 0.8 lag and 0.8 lead 0.6 lag and 0.8 lead 0.8 lag and 0.6 lead 0.6 lag and 0.6 lead 0.8 lag and 0.8 lead ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal power station needs space less than that required by atomic power station of the same output. less than that required by a gas turbine power plant of same output. less than that required by hydro-power station of same capacity. less than that required by the diesel power station of same output. less than that required by atomic power station of the same output. less than that required by a gas turbine power plant of same output. less than that required by hydro-power station of same capacity. less than that required by the diesel power station of same output. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What are the methods of laying underground cables? Direct laying. Draw - in - system / duct - pipe laying. None of these. Both A and B. Direct laying. Draw - in - system / duct - pipe laying. None of these. Both A and B. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 840 Ω 210 Ω 420 Ω 400 Ω 840 Ω 210 Ω 420 Ω 400 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The steam power plant efficiency can be improved by using high temperature and high pressure steam. burning large amount of coal. decreasing the load on the plant. using large quantity of water. using high temperature and high pressure steam. burning large amount of coal. decreasing the load on the plant. using large quantity of water. ANSWER DOWNLOAD EXAMIANS APP
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