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Marafiq Interview Questions
Questions Answers Views Company eMail

difference between DCS @ SCADA system? and how can use in field

5 8233

What is difference between reset and initialization in industrial automation?

1 3914

If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link

1722

what is all types of analyzer in water production plant?

1 2426

What is difference between reset and initialization in system.

1 2945

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Un-Answered Questions

Tell us something about mutex.

611


What off-page seo tools do you use for backlinks?

433


what is the importance of CV in the control valves? how it is calculated?

1958


What is religious freedom?

1


It is possible to test 2 query subjects at a time in CRN1.1 & C8 FWM?

1950






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?

1664


Define a static class?

529


What is database migration?

517


What is a php tag?

522


Is it possible to run two instances of emulator on the same machine. I am doing some networking app and need two emulators to test it?

475


what are windows services?

518


What is synchronization and why is it important?

543


Can you pass value types by reference to a method?

519


How do I activate activex?

408


please send me bhel questions on rupesh.017@rediffmail.com

2260