Power Systems If sag in an overhead line increase, tension in the line None of these decrease increase remains same None of these decrease increase remains same ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a generator of 250 MVA rating has an inertia constant of 6 MJ/MVA, its inertia constant on 100 MVA base is 6 MJ/MVA 2.5 MJ/MVA 15 MJ/MVA 10.5 MJ/MVA 6 MJ/MVA 2.5 MJ/MVA 15 MJ/MVA 10.5 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications Pulversing unit. Ash handling unit. Cooling tower. Condenser. Pulversing unit. Ash handling unit. Cooling tower. Condenser. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to All of these reduce the vibrations at the point of support increase the sag reduce the tension All of these reduce the vibrations at the point of support increase the sag reduce the tension 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 0.6 lag and 0.6 lead 0.8 lag and 0.6 lead 0.8 lag and 0.8 lead 0.6 lag and 0.8 lead 0.6 lag and 0.6 lead 0.8 lag and 0.6 lead 0.8 lag and 0.8 lead ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 2.4 pu 1.375 pu 0.2 pu 3.975 pu 2.4 pu 1.375 pu 0.2 pu 3.975 pu ANSWER DOWNLOAD EXAMIANS APP
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