For a lossy transmission line, the characteristic impedance does not depend on The load terminating the line. The conductivity of conductors. The operating frequency of the line. The permittivity of the dielectric separating the conductor. TRUE ANSWER : ? YOUR ANSWER : ?
Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 500 MVA 100 MVA 400 MVA 125 MVA TRUE ANSWER : ? YOUR ANSWER : ?
In an interconnected power system, the most suitable power plant to meet the peak load condition is thermal plant pumped storage plant hydro power plant nuclear plant TRUE ANSWER : ? YOUR ANSWER : ?
The sequence components of the fault current are as follows: IR1 = j1.5 pu, IR2 = -j0.5 pu, IR0 = -j1. The type of fault is LLL LLG LG LL TRUE ANSWER : ? YOUR ANSWER : ?
On what factors does the selection of a water turbine depend Speed. Nature of load. Working head. All of above. TRUE ANSWER : ? YOUR ANSWER : ?
A generating station which has a high investment cost and low operating cost is usually operated as a Minimum load station. None of above. Base load station. Peak load station. TRUE ANSWER : ? YOUR ANSWER : ?
A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time? 0.76 Hz -0.76 Hz -0.85 Hz 0.85 Hz TRUE ANSWER : ? YOUR ANSWER : ?
The radiation shield for a nuclear power reactor for biological safety is provided by having the reactor immersed in water pool. isolated from outside word with strong magnetic field. encased thick metal wall. encased by thick concrete wall. TRUE ANSWER : ? YOUR ANSWER : ?
The insulation of modern EHV is designed based on RI. lightning voltage. corona. switching voltage. TRUE ANSWER : ? YOUR ANSWER : ?