Power Systems A string insulator has 4 units. The voltage across the bottom most unit is 33.33% of total voltage. Its string efficiency is 25% 75% 33.33% 66.66% 25% 75% 33.33% 66.66% ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plat work Bell - Coleman cycle. Rankine cycle. Otto cycle. Carnot cycle. Bell - Coleman cycle. Rankine cycle. Otto cycle. Carnot cycle. 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. 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. all of above. the height of water level in the river where the tail race is provided. 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. all of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 400 MVA 100 MVA 500 MVA 125 MVA 400 MVA 100 MVA 500 MVA 125 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 88.2% 15% 85% 11.8% 88.2% 15% 85% 11.8% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following power plants is free from environmental problem Diesel engine. Hydroelectric. Nuclear. Steam. Diesel engine. Hydroelectric. Nuclear. Steam. ANSWER DOWNLOAD EXAMIANS APP
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