Power Systems If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs. 3. 20. 7. 5. 3. 20. 7. 5. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a lossy transmission line, the characteristic impedance does not depend on The operating frequency of the line. The permittivity of the dielectric separating the conductor. The load terminating the line. The conductivity of conductors. The operating frequency of the line. The permittivity of the dielectric separating the conductor. The load terminating the line. The conductivity of conductors. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LL LG LLL LLG LL LG LLL LLG ANSWER DOWNLOAD EXAMIANS APP
Power Systems The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this? LG. LLG. LL. LLLG. LG. LLG. LL. LLLG. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system? 1 A. 14.7 mA. 14.76 A. 1.476 A. 1 A. 14.7 mA. 14.76 A. 1.476 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relays is/are unit protection relays? over current relays both 1 and 2 Buccholz relays Differential relays over current relays both 1 and 2 Buccholz relays Differential relays ANSWER DOWNLOAD EXAMIANS APP
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