Power Systems Which of the following relays is/are unit protection relays? Buccholz relays over current relays Differential relays both 1 and 2 Buccholz relays over current relays Differential relays both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading of a 3-phase, 400 kV transmission line is 400 Ω. The surge impedance loading is 1600 MW 400 MW 200 MW 800 MW 1600 MW 400 MW 200 MW 800 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 4 bus,4×4 Y bus matrix the number of non zero elements are 12. Find the number of transmission lines? 2 8 5 4 2 8 5 4 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 8 MΩ 16 MΩ 4 MΩ 32 MΩ 8 MΩ 16 MΩ 4 MΩ 32 MΩ ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 24. 12. 6. 16. 24. 12. 6. 16. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gas coolled reactor use coolant at pressure of 14-28 Kg/cm2 and at temperature of 700°-800° c. use CO2. or helium as coolant and graphite the moderator. use heavy water as coolant as well as moderator. both B and C. use coolant at pressure of 14-28 Kg/cm2 and at temperature of 700°-800° c. use CO2. or helium as coolant and graphite the moderator. use heavy water as coolant as well as moderator. both B and C. ANSWER DOWNLOAD EXAMIANS APP
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