Power Systems What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes 78.96 %. 79.33 %. 74.56 %. 80.25 %. 78.96 %. 79.33 %. 74.56 %. 80.25 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conductor of a 10 Km long single phase, two wire line are separated by a distance of 1.5 m the diameter of each conductor the inductance of the circuit is 21.2 mH. 23.33 mH. 23.8 mH. 25.8 mH. 21.2 mH. 23.33 mH. 23.8 mH. 25.8 mH. 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? 8 5 4 2 8 5 4 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The advantage of hydro electric power station over thermal power station is hydro electric station can be constructed at the place where the energy is required the initial cost of hydro electric power station is low the operation cost of hydro electric power station is low hydro electric power station can supply the power throughout the year hydro electric station can be constructed at the place where the energy is required the initial cost of hydro electric power station is low the operation cost of hydro electric power station is low hydro electric power station can supply the power throughout the year ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 48.36 kV 52.84 kV 20 kV 83.76 kV 48.36 kV 52.84 kV 20 kV 83.76 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems The method of neutral grounding affects the negative sequence network All of these positive sequence network zero sequence network negative sequence network All of these positive sequence network zero sequence network ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS