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ABB Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the difference between Current transformer & Capacitive voltage transformer

2 3149

How do you know when the battery is fully charged?

6 6816

What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

1419

What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

1026

What is the basis for selecting Vk/2 or Vk/4 for REF and Differential protection of Transformer and What is the significance of magnetising current

944





what is the purpose of high speed earth switch in gas insulated substat

1543

how to modify DOL control panel into Delta Y connection?

712

how many testing use in power transformer?tell equipment names?

2 3214

what is the meaning write of AC1,AC2,AC3 .....power contactor

7 23041

xpression 'document.FrmQF.myemail' [

746

Differentiate between power relay and reverse power relay?

2 4471

what effect on electrical equipment if PF is gone over 0.996 in leading when provider say that its keep in minimum 0.996lagging

3 4048

What is the difference between earth and neutral

3 5366

for a machine R=130 KVA Y=132 KVA B=144 KVA Then what will be the total kva

3 3158

what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?

2 3426

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Un-Answered Questions

can any one give me the question bank for Lab Technician am going to appear for my HAAD exam on the 29/4/10. Please send me the Qs. my mail Id is petula_dsouzaa@yahoo.com Please help. thks.

1251


How much is the specific fuel consumption of an average diesel engine?

662


what should be tested when credit card is used as payment option in ecommerce project?can anyone tell me in detail what to test n how to test when credit card is involved in web application?

701


how the tube light glows even if the starter is removed

1676


what is human relation approuch ?

810






how we can do the insulation on secondary of ct explain and so that tan delta will within limit

651


how to calculate air load of a existing/ new plant before installing a air compressor.

699


 How do we delete the cache of the Process Scheduler?

309


In general, alternating voltage varies between its maximum and minimum values 50 times per cycle. Why don't the circuit element show such fluctuation?

1340


lorteny method

698


iam B.E 1year student,actually i have a habit i.e anything to think pratically but always iam in confusion what i have to do

1898


How do you send the output of a script as an email attachment

875


what is your weaknesses

690


diff b/w inter process and in process

747


Whata are the types of Cables?

698






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