A 3-phase breaker is rated at 2000 MVA, 33 kV, its making current will be 49 kVA. 89.22 kVA. 70 kVA. 35 kVA. TRUE ANSWER : ? YOUR ANSWER : ?
What is the total installed power capacity (MW) in West Bengal as published by ministry of power in 2011? 8113.27. 6114.05. 10000.32. 15515.22. TRUE ANSWER : ? YOUR ANSWER : ?
The total number of strands(N) is concentrically stranded cable with total annular space filled with strands of uniform diameter is given by (if x is number of layers) N = 3x²-2x+1 N = 3x²-3x+1 N = 3x²-6x+1 N = 3x²+3x+1 TRUE ANSWER : ? YOUR ANSWER : ?
Mho relay is used for protection of medium lines. none of these. long lines. short lines. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following methods is/are used for reactive or voltage compensation series capacitor All of these generation excitation control shunt capacitor TRUE ANSWER : ? YOUR ANSWER : ?
The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line? 3000 Ω 1500 Ω 1000 Ω 750 Ω TRUE ANSWER : ? YOUR ANSWER : ?
If all the sequence voltages at the fault point in a power system are equal, then the fault point is a LLL LL LLG LG TRUE ANSWER : ? YOUR ANSWER : ?
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation? 386 MW 478 MW 456 MW 400 MW TRUE ANSWER : ? YOUR ANSWER : ?
Under excited Synchronous phase modifier works as series capacitor shunt reactor any of the above shunt capacitor TRUE ANSWER : ? YOUR ANSWER : ?
Consider a three phase, 50 Hz, 11 kV distribution system. Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self capacitance of the insulators is 5 times the shunt capacitance between the link and ground. Find the voltage across the two insulators V1 and V2? (V1 = Voltage of disc nearest to the conductor) V1 = 3.46 kV and V2 = 2.89 kV V1 = 6 kV and V2 = 5 kV V1 = 2.89 kV and V2 = 3.46 kV V1 = 5 kV and V2 = 6 kV TRUE ANSWER : ? YOUR ANSWER : ?