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Engineering Interview Questions
Questions Answers Views Company eMail

why starter use to on a motor

Emco,

6 9461

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

3 23019

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

3 23947

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

2114

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 10135

what is the difference between red bricks& cement bricks

2 12421

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,

2150

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

BEL, BSL, L&T, Mrkr Constructions,

1 8997

sir i want previous entrance exam papers for written test

Vizag Steel,

2155

why level transmitter input is given 4to20ma

Sabic,

2 6673

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

1 6361

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

SPIC, TNPL,

2 8327

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 6707

what is difference between expansion and construction joint?

Save the Children,

3 10165

if change the pid in D value so what action.

Siemens,

2 8365


Un-Answered Questions { Engineering }

Do the design & fittings depend on the type of the vehicle engine? Why is petrol used for engines only & vice versa.

929


What is additive color?

1


Advantages of using generator circuit breaker (GCB) scheme in a power station ?

5281


What is the main purpose of an airspeed indicator in an aircraft?

1028


Preparation before arriving port?

1909


what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

1930


What is the importance of peak inverse voltage?

1152


What are the advantages and disadvantages of using gear pumps?

1158


7. Orange LED on RRI card is glowing – what is the indication?

2350


how can get electrical "c" licence.i am complited in DEEE.PASSING YEAR OF 1993.WORKING IN PVT COCERN LT LINE.PLEASE ADVISE ME .CELL NO 9994786021

1952


List out the different frequency domain specifications?

1235


I am having 5 nos. ceiling fans in my home. if i switch on all fan at full speed say 5 , so Will my meter reading be runing fast ? OR if I keep all fans on very low speed, say 1, so meter reading will runing slowly. or it does not make any difference whether low or high. reading will remain same?

1856


Why opamp called operational amplifier?

1084


where i can get soil testing report for construction in aurangabad.

3168


sir, pls mail me the previous question papers of RRB Junior Engineer Gr-II Drawing

1948