Electrical Engineering Interview Questions
Questions Answers Views Company eMail

types of motor starter

5 5258

What is the meaning of HT Trivector Meter ?

NIIT, Sodexo,

1935

i have faced a problem in ro plant grunfos make bm30type pump it is 22kw pump. We start this pump using siemens 3rw 4423-ibc44, 30kw softstarter but this soft starter will frequently failier so we planed to change dol starter. So pls tell anybudy its possible or not.

1535

ro plant grundfos bm30type pump.we start the pump using siemens 3rw 4423-1bc44, 30kw soft starter. bur its failier frequently. so we planed to change the dol starter. sp please tell me any budy its possible or not￿翿შ†

1 2569

how to calculate energy meter multipling factor by ct & pt raitio

2 5326

ful form of gis

ABB,

2 4226

What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?

Welspun,

2472

whats happen if we disconnect the NGR of alternator in running condition?. Generally we observed that transformer netrul is directly grounded but alternator connected with NGR, then ground?

1 3895

) why transformer cannot rotate though the principle behind induction motor is similar to a transformer

3 6102

What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?

Bhel, Dawlance, IBM,

2 10479

what is the working process of over & under voltage relay.

NTPC,

1603

what is power factor ?

3 4386

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?

1304

The transformer which is smallest in size is and how to calculate that? The options are 100 KVA, 50 Hz 100 KVa, 100 Hz 100 KVA, 25 Hz 50KVA, 25 HZ

Ranbaxy, Zee Laboratories,

4 13332

Does voltage and current can be seperated?

2 4092


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Un-Answered Questions { Electrical Engineering }

What happened when voltage will half value of current ...

1116


Can we check ELCB constantly from R1 to R8 phase in 1 no DB?

1215


what is the criteria for selection of conductor used for ehv ac electrical dischrge

1598


Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?

776


sir pls send the je exam - 2008 and other model question papers..

1649






plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

1790


'documenˁ

1508


How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

1179


for compensate 315mh inductance ,how many capaciance required?

1610


how can we calculate the ratio of caustic soda and water in lrs.

5166


I am having dual speed motor of cromton greaves make of 3.7 KW -1400 rpm and 5 KW - 900 rpm. Please let me know groups and winding connction for rewinding purpose.

1504


with help of neat sketch explain principle of TIG welding process

1445


How many double suspension hardware fittings are required on a double circuit transmission tower?

1554


How isolater function when installed inelectrical 440V wiring

1693


how to select energy meter? have any calculation?

2375