Engineering Interview Questions
Questions Answers Views Company eMail

why starter use to on a motor

Emco,

6 7323

what's the difference between ATS and AMF...??pls answer me in detail with its working principle and construction also..

3 21537

How to calculate rated currennt Of Mcb for 2hp motor...

3 22073

a concrete mix 1 2 4 by volume with water cement ratio as .6 by weight if moisture content in F.A is 6% with 20% BULKING AND IN C.A 1.5% by volume. find quantities of different materials required for one bag of cement

1627

extremely urgent please, why a fuse is used before voltmeter but not with a ammeter connected to a CT(current transformer),thanks in anticipation.

NPCIL,

4 8470

what is the difference between red bricks& cement bricks

2 11211

We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

Siemens,

1641

The horizontal distance between parallel main reinforcements in RC slab shall not be more than

BEL, BSL, L&T, Mrkr Constructions,

1 8114

sir i want previous entrance exam papers for written test

Vizag Steel,

1666

why level transmitter input is given 4to20ma

Sabic,

2 5425

watt meter have 4 terminals what there name??? and what theses 4 terminals indicates ?? and why 2 terminals are short circuited??

1 5557

why most of the DP transmitters using maximum range as 0-2500mmwc?why not 1000 2000 3000 4000mmwc

SPIC, TNPL,

2 7125

How we will check whether the proximity, which we have is either NPN or PNP, if no data sheet or manual or any details is available to us ???

1 5682

what is difference between expansion and construction joint?

Save the Children,

3 8799

if change the pid in D value so what action.

Siemens,

2 6827


Un-Answered Questions { Engineering }

Tell me any three mineral fibers?

1


why demand factor less then 1 ?

1740


Define velocity ratio?

621


Define cotter joint?

672


how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1940






Why Ac Systems Are Preferred Over Dc Systems?

762


Why gas turbine power plant needs efficient compressor ?

687


how to compute kvar in substation feeder to improve power factor and sending voltage

1622


Kindly post me previous year interview questions with answer for post of Manager (civil engg.) for NTPC, IOC , GAIL etc. I have interview on july 2013.I will be very grateful to you. Please guide me.

1764


In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.

1816


What is Cycling Frequency Hopping?

1997


how to calculate kvar in Akiva

1450


why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving

1563


What is principal work of “O ring”?

600


What is the number of IS code of practice to be followed for hydraulic design of sewerage pipe line?

2133