If the phase velocity of a plane wave in a perfect dielectric is 0.4 times its value in free space, then what is the relative permittivity of the dielectric? 6.25 4.25 1.25 2.5 TRUE ANSWER : ? YOUR ANSWER : ?
In a series RLC circuit, the supply voltage is 230 V at 50 Hz. The resonant current is 2 A at the resonant frequency of 50 Hz. Under the resonant condition, the voltage across the capacitor is measured to be equal to 460 V. What are the values of L and C? 0.73 mH and 13.85 pF 0.53 mH and 15.83 pF 0.73 H and 13.85 pF 0.53 H and 15.83 pF TRUE ANSWER : ? YOUR ANSWER : ?
In a single phase energy meter, the pressure / voltage coil is wound on the centre limb of the laminated core / the middle limb of the shunt magnet both the limbs of the laminated core with different turns both the limbs of the laminated core with same turns the edges of the limb on the laminated core TRUE ANSWER : ? YOUR ANSWER : ?
Job, in operating system refers to Application Software Program Process System software TRUE ANSWER : ? YOUR ANSWER : ?
In transformer testing, Sweep Frequency Response Analysis (SFRA) testing is a tool to help locate ____ Short circuits Core movement All of these Winding damage TRUE ANSWER : ? YOUR ANSWER : ?
Replace the braketed phrase grammatically and conceptually with the help of the given opation. If the given sentence is correct then select the option ’The given sentence is correct’.<br/>The corono virus continued to spread, with the development of infections advancing quickly The given sentence is correct continued for spread, with the development of infections continue to spread, with the development of infections continued to spreading, with the development of infections TRUE ANSWER : ? YOUR ANSWER : ?
The current in the coil of a large electromagnet falls from 6 A to 2 A in 10 ms. The induced emf across the coil is 100 V. Find the self-inductance of the coil. 0.25 H 0.75 H 0.5 H 1.25 H TRUE ANSWER : ? YOUR ANSWER : ?
Consider the following statements associated with Buchholz’s relays.<br/>Statement 1: Buchholz's relay is used for protection of a transformer against incipient faults.<br/>Statement 2: Buchholz's relay can be installed on oil cooled transformers. Statement 1 is FALSE and Statement 2 is TRUE Statement 1 is TRUE and Statement 2 is FALSE Both Statement 1 and Statement 2 are TRUE Both Statement 1 and Statement 2 are FALSE TRUE ANSWER : ? YOUR ANSWER : ?
The process of peeling of rocks into layers is called Delta Exfoliation Brachans Sublimation TRUE ANSWER : ? YOUR ANSWER : ?
A single phase full converter bridge, connected to 230 V, 50 Hz source is feeding a load R =10 Ω in series with a large inductance that makes the load current ripple free. For a firing angle of 450, calculate the rectification efficiency. 50.55% 63.66% 76.66% 28.33% TRUE ANSWER : ? YOUR ANSWER : ?