Which of the following is used in thermal plants Rankine cycle Otto cycle All of these Joule cycle TRUE ANSWER : ? YOUR ANSWER : ?
In an induction relay for a particular current setting the operating time 4 sec. When the time multiplier setting is 0.8 if the time multiplier setting is rest to 1 the operating time is 5. un changed. 1. 10. TRUE ANSWER : ? YOUR ANSWER : ?
In an interconnected power system, the most suitable power plant to meet the peak load condition is pumped storage plant thermal plant hydro power plant nuclear plant TRUE ANSWER : ? YOUR ANSWER : ?
Advantages of gauss siedel method is/are calculation time for each iteration is less applicable for large power system network All of these number of iterations are less TRUE ANSWER : ? YOUR ANSWER : ?
In a nuclear reator thermal energy is obtained from burning of fuel rods in oxygen. fusion of radioactive material. all of above. fission of radioactive material. TRUE ANSWER : ? YOUR ANSWER : ?
For a 500 Hz frequency excitation, a 100 km long power line will be modelled as shunt capacitor long transmission line any of the above medium transmission line TRUE ANSWER : ? YOUR ANSWER : ?
The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by Zs = 0.7 pu, Zm =0.2 pu Zs = 0.5 pu, Zm =0.6 pu Zs = 0.6 pu, Zm =0.5 pu Zs = 0.2 pu, Zm =0.7 pu TRUE ANSWER : ? YOUR ANSWER : ?
Which statement is not correct for the transmission line parameter R, L, G and C For each line, the conductors are characterized by σ c, μ c, εo = ε c and the homog At high frequencies at which most of communication system operate the internal inductance of the conductor is neglected. G = I/R. R is the AC resistance per unit length of conductor C. The line parameter R,L,G and C are uniformly distributed along the entire length of the line C. TRUE ANSWER : ? YOUR ANSWER : ?
Which cooling is preferred for large turbine generator None of these. Nitrogen cooling. Oxygen cooling. Hydrogen cooling. TRUE ANSWER : ? YOUR ANSWER : ?
A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 0 Ω 200 Ω 400 Ω 800 Ω TRUE ANSWER : ? YOUR ANSWER : ?