A rectangular conductor is 1.6 inches wide and 0.25 inch thick. What is its area in square mils? 400000 square mils 400 square mils 40000 square mils 4000 square mils TRUE ANSWER : ? YOUR ANSWER : ?
What items should be considered when looking at a site for a new transformer installation? Environmental impact Soils Report Site Survey All of these TRUE ANSWER : ? YOUR ANSWER : ?
Two-wattmeter method is used to measure the power taken by a 3-phase induction motor on no load. The wattmeter readings are 400 W and -50 W. Calculate the reactive power taken by the load 350√3 VAR 450/√3 VAR 350/√3 VAR 450√3 VAR TRUE ANSWER : ? YOUR ANSWER : ?
The DC offset in fault current causes conventional over-current (OC) relays to : under-reach reach remains unaffected due to DC offset sometimes under-reach and sometimes over-reach over-reach 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 1.25 H 0.5 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. Both Statement 1 and Statement 2 are TRUE Statement 1 is FALSE and Statement 2 is TRUE Both Statement 1 and Statement 2 are FALSE Statement 1 is TRUE and Statement 2 is FALSE TRUE ANSWER : ? YOUR ANSWER : ?
A 10-pole induction motor is supplied by a 6-pole alternator, which is driven at 1400 rpm. If the motor runs with a slip of 5%, what is its speed? 882 rpm 1575 rpm 798 rpm 1425 rpm TRUE ANSWER : ? YOUR ANSWER : ?
What are the main challenges that the electric grid faces? Increase in Energy Demand Global rise in temperature Reliability and Power Quality is Declining All of these TRUE ANSWER : ? YOUR ANSWER : ?
A group of computers and other devices connected together is called a network and the concept of connected computers sharing resources is called ____ Switching Networking Linking Routing TRUE ANSWER : ? YOUR ANSWER : ?