Power Systems In a biased differential relay the bias is defined as the ratio of operating coil current and restraining coil current. fault current and restraining coil current. fault current and operating coil current. number of turns of restraining and operating coil. operating coil current and restraining coil current. fault current and restraining coil current. fault current and operating coil current. number of turns of restraining and operating coil. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the methods of improving transient stability? Dynamic breaking Fast acting governing system Fast acting excitation control All of these Dynamic breaking Fast acting governing system Fast acting excitation control All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relays are used for the protection of which of the following lines? long transmission lines only None of these short transmission lines only medium transmission lines only long transmission lines only None of these short transmission lines only medium transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 m℧? 320 Ω 160 Ω 200 Ω 400 Ω 320 Ω 160 Ω 200 Ω 400 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following effects are associated with transmission line skin effect ferranti effect corona effect All of these skin effect ferranti effect corona effect All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The power generated by two plants are; P1 = 50 MW, P2 = 40 MW. If the loss coefficients are B11 = 0.001, B22 = 0.0025 and B12 = -0.0005, then power loss will be 4.5 MW 8.5 MW 5.5 MW 6.5 MW 4.5 MW 8.5 MW 5.5 MW 6.5 MW ANSWER DOWNLOAD EXAMIANS APP