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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 3248

How do you know when the battery is fully charged?

6 6983

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

1558

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

1103

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

1014





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

1655

how to modify DOL control panel into Delta Y connection?

755

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

2 3301

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

7 23856

xpression 'document.FrmQF.myemail' [

803

Differentiate between power relay and reverse power relay?

2 4639

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 4142

What is the difference between earth and neutral

4 5503

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

3 3322

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

2 3563

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Un-Answered Questions

What is meant by running clearance?

1296


how work microwave anteena in mobile tower

997


If you want to output the results to the log file .. How to do?

1116


What causes high-frequency oscillations in invertebrates or vertebrates?

798


If there are Senders who are sending messages on a queue. And these messages are not yet received by the consumers. They are still lying in the server. But before the consumers could receive the message the server went down. Since they are persistent messages, they are saved. But when secondary comes up how will the secondary server will get the message because it’s a different machine. How will it get the messages which are with the Primary server?

332






what is directivity effect?

783


At the time of creating GRN can I mention business area?

1210


how to diffenentiate the fixed beam and simply supported beam in the execution while reading the drawing and how the reinforcement detail will be differ for the above.

1048


I am having 4 years of exp in S/w Testing. I am planing to change my technologies. recently I learnt MQ series. I am looking for FAQ's . Please Help me anyone.

916


How to Reset Pagenumbers in one report.

1376


TELL ME YOU HAVE SEEN CROWDED MARKET?

2332


What is the use of a program in SEO related information?

392


Hey this is venkatesh.Please can any body tell me what is SFLNXTCHG?where we use this keyword?what perpuse we use this?Can you tell me in real time senario with example? And in 7 specification(RPG/400)what is the mandatory specification using programs?

797


What is the difference between shortcircuit current, rated current of cable & MCB with example? What will be the size of cable required for 5.5 KW motor (Full load current 10 Amps approx.), Starting current with DOL is 120 Amps. Aprrox. Short circuit current with LLLG fault is 2000 Amps Approx.

750


what is the differnce between programing langauge and tool? is sas is a programing langauge r tool?

1088






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