Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 100, 0.4 4, 10 4, 0.4 100, 10 100, 0.4 4, 10 4, 0.4 100, 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two identical synchronous machines having same inertia constant are connected in parallel and swinging together. The effective inertia constant is 4 MJ/MVA. Then each machine has inertia constant of 16 MJ/MVA 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 16 MJ/MVA 2 MJ/MVA 8 MJ/MVA 4 MJ/MVA 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 Thermal shielding is provided to All of these absorb the fast neutron. protected the operating personal from exposure to radiations. prevent the reactor wall from getting heated. All of these absorb the fast neutron. protected the operating personal from exposure to radiations. prevent the reactor wall from getting heated. 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 increase. increase and remain unaffected. decrease and remain unaffected. increase and decrease. decrease and increase. increase and remain unaffected. decrease and remain unaffected. increase and decrease. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Buchholz relay is used for protection of alternator. transformer. none of these. bus bar. alternator. transformer. none of these. bus bar. ANSWER DOWNLOAD EXAMIANS APP
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