Power Systems The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base? 0.1 pu 0.4 pu 0.2 pu 0.25 pu 0.1 pu 0.4 pu 0.2 pu 0.25 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the preferred type of circuit breaker(CB) to be installed in extra high voltage AC system? Vacuum CB Sulphur hexafluoride CB Bulk oil type CB Air blast CB Vacuum CB Sulphur hexafluoride CB Bulk oil type CB Air blast CB ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power transmission lines are transposed to reduce proximity effect skin effect ferranti effect radio interference proximity effect skin effect ferranti effect radio interference ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be 32 MΩ 8 MΩ 16 MΩ 4 MΩ 32 MΩ 8 MΩ 16 MΩ 4 MΩ ANSWER DOWNLOAD EXAMIANS APP
Power Systems The generating station suitable to operate as peak load plant is Power station. Pumped storage. Nuclear power station. Thermal power station. Power station. Pumped storage. Nuclear power station. Thermal power station. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Consider a three phase, 50 Hz, 11 kV distribution system. Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self capacitance of the insulators is 5 times the shunt capacitance between the link and ground. Find the voltage across the two insulators V1 and V2? (V1 = Voltage of disc nearest to the conductor) V1 = 2.89 kV and V2 = 3.46 kV V1 = 5 kV and V2 = 6 kV V1 = 6 kV and V2 = 5 kV V1 = 3.46 kV and V2 = 2.89 kV V1 = 2.89 kV and V2 = 3.46 kV V1 = 5 kV and V2 = 6 kV V1 = 6 kV and V2 = 5 kV V1 = 3.46 kV and V2 = 2.89 kV ANSWER DOWNLOAD EXAMIANS APP
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