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)? 4 x 10⁶ kV/sec 1 x 10⁶ kV/sec 2 x 10⁶ kV/sec 3 x 10⁶ kV/sec TRUE ANSWER : ? YOUR ANSWER : ?
A single phase motor connected to 415 V, 50 Hz supply takes 30 A at a power factor of 0.7 lagging. Calculate the capacitance required in parallel with the motor to raise the power factor to 0.9 lagging. 86.32 µF 66.32 µF 96.32 µF 76.32 µF TRUE ANSWER : ? YOUR ANSWER : ?
A MOSFET rated for 15 A, carries a periodic current as shown in figure. The ON state resistance of the MOSFET is 0.15 Ω. The average ON state loss in the MOSFET is 15 W 33.8 W 3.8 W 7.5 W TRUE ANSWER : ? YOUR ANSWER : ?
If all the devices are connected to a central hub, then the topology is called Bus Topology Star Topology Tree Topology Tree Topology TRUE ANSWER : ? YOUR ANSWER : ?
Encrypted security payload extension header is new in IPv5 IP IPv4 IPv6 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 RPQS PQSR RPSQ PQRS TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a national organisation monitoring the doping control programme in sports in India? Indian Anti-Doping Agency International Anti-Doping Protocol Primary Anti-Doping Agency National Anti-Doping Agency TRUE ANSWER : ? YOUR ANSWER : ?
A circuit breaker is rated 2500 A, 2000 MVA, 33 kV, 3 sec, 3-phase oil circuit breaker. Determine the breaking current. 350 kA 2500 A 25 kA 35 kA TRUE ANSWER : ? YOUR ANSWER : ?
A three-phase, 4-pole, 50 Hz induction motor runs at 1425 rpm. Find out the percentage slip of the induction motor. 5% 3% 6% 4% TRUE ANSWER : ? YOUR ANSWER : ?
In transformer, bushing failure occurs due to<br/>(i) transformer vibrations<br/>(ii) dielectric losses<br/>(ii) partial discharge (ii) and (iii) only (i) and (iii) only (i), (ii) and (iii) (i) and (ii) only TRUE ANSWER : ? YOUR ANSWER : ?