Engineering Interview Questions
Questions Answers Views Company eMail

why starter use to on a motor

Emco,

6 7382

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

3 21592

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

3 22171

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

1654

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 8516

what is the difference between red bricks& cement bricks

2 11254

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,

1659

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

BEL, BSL, L&T, Mrkr Constructions,

1 8152

sir i want previous entrance exam papers for written test

Vizag Steel,

1686

why level transmitter input is given 4to20ma

Sabic,

2 5460

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

1 5582

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

SPIC, TNPL,

2 7172

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 5714

what is difference between expansion and construction joint?

Save the Children,

3 8847

if change the pid in D value so what action.

Siemens,

2 6892


Un-Answered Questions { Engineering }

What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

1504


what are the accessories need to be added while doing estimation for the following: 1.MCCB 2.MCB 3.ACB

1573


In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?

1467


i want to held the examination of the bpsc.pl gave the condition &prepare to eam &whose subjet are chose

2037


What is latching current in scr?

581






State some of perfusion drawbacks.

551


What are the limitations of Kirchoff's laws?

1115


Is there any course for billing available in Mumbai? If yes then please mail me the details..

1807


Explain what is cotton fiber?

1


what is the physical connection of a analog i/p to a analog i/p module (ab plc)and through a analog o/p module(ab plc) to a analog o/p . and how all the process control by scada

1429


What is heavy water and what is its use in nuclear plants ?

636


what is your eligibility criteria for freashers?

1629


What do we use carburizing/nitriding chemicals for?

642


find the discharge of water through a horizental venturimeter having 400mm dia at the inlet main and 150mm dia at thorat.if the diffrential gauge between inlet and thorat shows a pressure head of 25cm mercury. assume coefficient discharge 0.98 and specfic gravity of mercury as 13.6.

1805


What is u value?

577