Top Engineering Interview Questions :: ALLInterview.com http://www.allinterview.com Top Engineering Interview Questions en-us 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 pile foundation? http://www.allinterview.com/showanswers/9185.html Pile foundations are the part of a structure used to carry and transfer the load of the structure to the bearing ground located at more depth below ground surface. 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 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 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 are active and Passive Components? http://www.allinterview.com/showanswers/3678.html ACTIVE COMPONENTS The components which produce the energy in the form of current or voltage are called as active components. Example:transistors etc,. PASSIVE COMPONENTS The components which stores the energy in the form of curren 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 is the vector group analysis done in transformer tests http://www.allinterview.com/showanswers/1225.html To determine phase displacement what are IS code for M20, 25, etc http://www.allinterview.com/showanswers/32471.html is 456 2000 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 voltage transformer and potential tra http://www.allinterview.com/showanswers/56891.html which voltage transformer? wherw it use? please give detail? What is the need for modulation? http://www.allinterview.com/showanswers/10629.html modulation is scheme under which the the signal is first modified to suitable form(compress or amplied)and mixwd with the carrier for trassmission What is meant by Active and reactive power? http://www.allinterview.com/showanswers/58411.html working power ( KW )to perform the actual work of creating heat ,light,motin,etc reactive power ( KVAR ) to sustained the magnetic field it does not work ( Loss ) what is phase to phase voltage? what is line to line voltage http://www.allinterview.com/showanswers/65068.html Phase to Phase Voltage= 415 v Line to Line Voltage =