Power Systems Thermal shielding is provided to prevent the reactor wall from getting heated. All of these protected the operating personal from exposure to radiations. absorb the fast neutron. prevent the reactor wall from getting heated. All of these protected the operating personal from exposure to radiations. absorb the fast neutron. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? 0.52 Hz -0.52 Hz 50 Hz 0.48 Hz 0.52 Hz -0.52 Hz 50 Hz 0.48 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems On what factor does the performance of a circuit breaker depend? Critical length of breaking. Breaking speed. Both A and C. None of these. Critical length of breaking. Breaking speed. Both A and C. None of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system? Air blast CB Vacuum CB Bulk oil type CB Sulphur hexafluoride CB Air blast CB Vacuum CB Bulk oil type CB Sulphur hexafluoride CB ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 60-70% 30-40% 20-25% 45-55% 60-70% 30-40% 20-25% 45-55% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A CANDU reactor uses natural uranium as fuel and heavy water as moderator and coolant. enriched uranium as fuel and ordinary water as moderator and cooler. highly enriched uranium as fuel and water as moderator and coolant. only fertile materials. natural uranium as fuel and heavy water as moderator and coolant. enriched uranium as fuel and ordinary water as moderator and cooler. highly enriched uranium as fuel and water as moderator and coolant. only fertile materials. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS