Power Systems The most commonly used material for insulators of overhead lines is porcelain glass mica PVC porcelain glass mica PVC ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following transformer is used in sub station for operating a protective relay? All of these auto transformer distribution transformer capacitor voltage transformer All of these auto transformer distribution transformer capacitor voltage transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays is/are unit protection relays? Differential relays Buccholz relays both 1 and 2 over current relays Differential relays Buccholz relays both 1 and 2 over current relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gross head of an hydroelectric power station is the height of water level in the river where the tail race is provided. all of above. the height of water level in the river where the storage is provided. the difference of water level between the level in storage and tail race. the height of water level in the river where the tail race is provided. all of above. the height of water level in the river where the storage is provided. the difference of water level between the level in storage and tail race. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the inertia constant H = 8 MJ/MVA for a 50 MVA generator, the stored energy is 200 MJ 400 MJ 8 MJ 50 MJ 200 MJ 400 MJ 8 MJ 50 MJ ANSWER DOWNLOAD EXAMIANS APP
Power Systems If skin depth is more, then skin effect is None of these either 1 or 2 less more None of these either 1 or 2 less more ANSWER DOWNLOAD EXAMIANS APP
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