Electrical Engineering Interview Questions
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Basic motor transformer generator

eCentric Solutions,

79

How to perform a DC resistance test In Alternator and their proceduces?

64

if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?

51




what is difference between KW and KVA

137

how to select rating of HT Panel

113

if we have 320KVA Genset kindly advice how much load we can put it.

106

For 35 HP motor how much amount of capacitor should be on in kvr to reduce the current bill

120

Why transformer used in UPS??

JLL,

123




The 3 phase Delta connection RB=440V, BY=350V,.......* is Line to Line voltage RY= ? And Formula....?

114

if there are six generators (3 gas CATT, one Jenbacher o1 MW each, and two nos Diesel 01 no 01 mw other 0.65mw EDGs ( say), 3 CAtt gas set have identical pole pitch,01mw EDG and Jenbacher gas Set have different pole pitch, how their power connection can be done to connect a common bus bar during installation. in short, how different pole pitched generators power connection can be done to connect a common busbar system through generators incomer ACBs.

118

1hp single phase load = howmuch 3 phase load

64

1.4 What is meant by CT knee point voltage and how would you determine it

120

If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?

50

If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables

ABC,

33

i have gear oil pump with single phase motor.some time its motor starts running in reverse direction rather than forward direction...whats the reason behind this issue. 1- either capacitor is week? 2- or winding is week?

27


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Un-Answered Questions { Electrical Engineering }

for opening electrical shop, tips needed.

382


Pl. brief about break-down maintenance of machine tool.

577


my diploma certificate in my higher education college

347


why +24 v and -48 v give to BTS? If -48v protect from surge then why we not use -24 v?

625


star delta starter contorl circuit... drawing..

834






In my power station 220 volts dc battery set. they coneected 84th cell taped

411


how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids

642


some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

541


If you have an earth with pilecap then your resistance is really low. why and how?

652


gas turbine genrator reactances

580


what is the principle of operation of tungstun bulb ??

644


1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

3254


what is a types of short circuit and what is a types of distance protection tests

889


hr round

844


How to calculate the sag of OPGW during stringing???

1212