Top Electrical Engineering Interview Questions :: ALLInterview.com http://www.allinterview.com Top Electrical Engineering Interview Questions en-us why transformer ratings in kva? http://www.allinterview.com/showanswers/11035.html because,ironloss is depends in voltage and cu_loss is depends in current.so the transformer ratings in kva what is the difference between ONLINE UPS and OFFLINE UPS? http://www.allinterview.com/showanswers/32933.html online ups is the one which in on position (both cases: powersupply on&off).but in case of offline ups is on at the time power failure. what is the difference between earth and neutral? http://www.allinterview.com/showanswers/16830.html Neutral point is basically a refrence point it may be at any potential difference. i.e. 5V, 10V, 1000V etc. Take an example of a system where voltage is fluctuating between 9,950V to 10,050V. and its external body is at 10.000V, when we tak what is the difference between electrical & electronics http://www.allinterview.com/showanswers/21000.html eletrical is transfor a.c current-electronics is control circuit in d.c voltage eletrical use fundamental all purpose--eletronics use based on eletrical can you give main difference between ELCB And RCCB? http://www.allinterview.com/showanswers/61375.html ELCB has a protection for earth leakage where as the RCCB has the dual protection features of ELCB and MCB What is the power ratio between power in Star and Delta circuit? http://www.allinterview.com/showanswers/16835.html The power ratio between Star to Delta is 1:3 Here is the Explanation: Let?s suppose Vs be the supply voltage per phase. So the line voltage of the supply will be ?3Vs. Now assume any type of load; for simplicity assume it a only resis why is the vector group analysis done in transformer tests http://www.allinterview.com/showanswers/1225.html To determine phase displacement What is meant by H.R.C fuse? http://www.allinterview.com/showanswers/190.html In electrical system fuse acts as protection device and depending on application different type of fuse is to select. Out of these different type of fuses HRC is also one of the type and it stands for " High Rupting Capacity". This t What is the difference between voltage transformer and potential tra http://www.allinterview.com/showanswers/56891.html which voltage transformer? wherw it use? please give detail? what are the types of transformers http://www.allinterview.com/showanswers/28909.html Set up transformer Sep down transformer Centre tap transformer What is the Difference Between MCCB & ACB & VCB http://www.allinterview.com/showanswers/67437.html Mccb is moulded case circuit breaker. ACB is air circuit breaker. VCB is vacuum circuit breaker. Why a starter is used for a motor? http://www.allinterview.com/showanswers/206.html Starter is used for a motor to limit the high starting current. During starting of a dc motor high current of upto 4-5 times the full load current occurs which is avoided by use of high resistance slowly cut out of the circuit. working of a diesel generator. http://www.allinterview.com/showanswers/1686.html by using a diesel operated motor the mechanical input to the generator is given and the generator generates the electricity differance b|w ground, neutral&earth http://www.allinterview.com/showanswers/3004.html Ground and earth are both same. This means connected to ground ie always remain zero potential. Neutral means tle lower potential of the supply source with respect to another potential of the same supply source. What are the tests to be taken on a transformer and generator? http://www.allinterview.com/showanswers/208.html sc test & oc test done on t/f, no load,load test