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ABB Interview Questions
Questions Answers Views Company eMail

what is the flip flop

14 12863

Explain the working principle of servomotor

20 42899

why we step down voltage level from 33kv to 11kv and 11kv to 415v.Instead we can step down voltage from 33kv to 415v directly using single transformer.

12 56582

WHAT IS THE DIFFERENCE BETWEEN PLC AND DCS

55 95475

in which welding process liquid metal is poured?

18 11710





which type of architecture 8085 has? what major and minor differnce of 8086&8085

16 27178

If the supply voltage is same (say 440V) whether a system designed for 60 Hz frequency will work with 50 Hz frequency or not , if so pl. give clarification.

11 9430

1. Why a DC motor starter is called 3 point starter

21 65552

Transformer's core is made up of which material and why so?

10 24868

tell 2 reasons for why only copper is used in domestic wires& only alluminium in transmission lines ?

10 11450

how much loading in terms of ampere can put on 5 MVA,33/11 KV TRANSFORMER having rated current 263 Amp ?????????

11 23347

1. what is the power factor and whatis his losses 2. what is the working procedure of 51RNB AND 87 relay

3 3453

what is divercity factor?

4 5593

why transformer is conneted to dc for polarity test.it doesnt work in dc?

1 5346

How to connect frequency meter in metering circuit?(single phase and three phase frequency meter)phase to phase or phase to neutral

7 24470

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Un-Answered Questions

When would you update a sap table directly?

51


What major issues have arisen?

70


Is unix more secure than windows?

19


Which is faster statement or preparedstatement?

1


1.what is the difference between snr and cnr?why cnr is used in satellite communication? 2.prove that power spectral density of gaussian noise os n/2

2064






How to reference all the elements in a one-dimension array?

25


What does currency swap instrument manage?

64


Differentiate between delete() and softdeletes().

21


How is text wrap done within a cell?

1


what are the topics choosen for jam round for interviews

576


How do you collapse a cell in excel?

1


What is the world is hardest metal?

43


List out the five features you can control for the sale document type?

68


Excel sheet having some datas and some datas present in the application (in table). How will you compare these two datas? Write code to fetch datas from Excel sheet.

908


What happens if null values are involved in comparison operations?

38