In a short circuit test on circuit breaker, time to reach the peak re-striking voltage is 50 µs with the peak restriking voltage of 100 kV. Determine average RRRV (Rate of rise re-striking voltage)? 2 x 10⁶ kV/sec 3 x 10⁶ kV/sec 1 x 10⁶ kV/sec 4 x 10⁶ kV/sec TRUE ANSWER : ? YOUR ANSWER : ?
A power factor less than unity results in which of the following disadvantages?<br/>(i) Large kVA rating of equipment<br/>(ii)Poor voltage regulation<br/>(iii) Greater conductor size (ii) and (iii) only (i), (ii) and (iii) (i) and (iii) only (i) and (ii) only TRUE ANSWER : ? YOUR ANSWER : ?
Replace the underlined phrase grammatically and conceptually with the help of the given options. If the given sentence is correct then select the option 'The given sentence is correct'.<br/>The HR will give an topic to test the ability of our employees for the new project will give a topic to test the ability of will give a topic to testing the ability of The given sentence is correct will gives a topic to test the ability of TRUE ANSWER : ? YOUR ANSWER : ?
Find the word which is correctly spelt from the given options. seriuous Abolishid Oscillate Socialy TRUE ANSWER : ? YOUR ANSWER : ?
A delta-connected balanced three-phase load is supplied from a three-phase, 400 V supply. The line current is 20 A and the power taken by the load is 10 kW. Find the power factor. 0.72 0.82 0.62 0.52 TRUE ANSWER : ? YOUR ANSWER : ?
In a single phase energy meter, the shunt electromagnet is energized by a ____of ____ pressure coil, thick wire of few turns current coil, thick wire of few turns current coil, thin wire of more turns pressure coil, thin wire of more turns TRUE ANSWER : ? YOUR ANSWER : ?
A 50 Hz synchronous generator is connected to an infinite bus through a line. The p.u. reactances of generator and the line are j0.3 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that of infinite bus is 1.0 p.u. The inertia constant of the generator is 4 MW-sec/MVA. Determine the frequency of natural oscillations if the generator is loaded to 60% of its maximum power transfer capacity and small perturbation in power is given. 1.32 Hz 1.42 Hz 1.62 Hz 1.52 Hz TRUE ANSWER : ? YOUR ANSWER : ?
In the circuit of figure, the switch is closed to position-1 for a long time. At t = 0 the switch position is changed from postion-1 to postion-2. Find an expression for the current i(t). i(t) = (E/R) sin√(LC) t A i(t) = (E/R) cos[1/√(LC)]t A i(t) = (E/R) sin[1/√(LC)]t A i(t) = (E/R) cos√(LC) t A TRUE ANSWER : ? YOUR ANSWER : ?
Rearrange the following to form a meaningful sentence and find the most logical order from the given options.<br/>P: dancers make the company<br/>Q: and they do not have<br/>R: a big team of professional<br/>S: a ‘guru shishya’ hierarchy PQRS RPQS PQSR RPSQ TRUE ANSWER : ? YOUR ANSWER : ?
Which one of the following is the largest windfarm located in India? Vindhayachal Muppandal Talcher Mundra TRUE ANSWER : ? YOUR ANSWER : ?