Power Systems In which of the following given faults, all the sequence currents are equal? LG LLL LL LLG LG LLL LL LLG ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of power system is/are Cost of electrical energy per KWh is to be minimum All of these Reliable power has to be available Flexible power has to be available. Cost of electrical energy per KWh is to be minimum All of these Reliable power has to be available Flexible power has to be available. ANSWER DOWNLOAD EXAMIANS APP
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 79.33 %. 74.56 %. 78.96 %. 80.25 %. 79.33 %. 74.56 %. 78.96 %. 80.25 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 4.28 pu 7.25 pu 3.75 pu 2.5 pu 4.28 pu 7.25 pu 3.75 pu 2.5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠°90 Ω, C = 0.5*10^-6∠90° ℧. Find Charging current under no load? 0.144∠90° A/phase 0.512∠90° A/phase 0.344∠90° A/phase 1.144∠90° A/phase 0.144∠90° A/phase 0.512∠90° A/phase 0.344∠90° A/phase 1.144∠90° A/phase ANSWER DOWNLOAD EXAMIANS APP
Power Systems Characteristics of arc quenching medium is/are All of these High thermal conductivity Non flammable High dielectric strength All of these High thermal conductivity Non flammable High dielectric strength ANSWER DOWNLOAD EXAMIANS APP
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