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Siemens Electrical Engineering Interview Questions

Questions Answers Views Company eMail

what is the difference between Ith & Iu rating in MCCB. Particularly on SACE ABB Circuit Breaker?

2 18479

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

2371

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

2316

A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?

2200

What is distance protection relay? where & why we use this relay?

2 13021

what are the installation procedure of high voltage power transformer,CT,CB&PT?

2123

what are the precuation should be taken ahen installing power transformer,circuit breaker,current & potential transformer

2166

Where is the center of magnetic field in alternator

1 5982

what is the diffrence between preventive maintinance corrective maintinance?

7 21348

in a dc motor we supply current only to the armature conductors,from where is the field winding gets excited then??

3 6263

what are corona losses

3 6836

How to know Resistance and Reactance value of main and aux winding of single phase capacitor start capacitor run induction motor to find capacitor value?

2098

what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker

1 5477

What is Harmonics how it is produced and what is the method to control the same

2333

What is the problem, if a circuit breaker is not closing.

4 19864

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Siemens Electrical Engineering Interview Questions (189)

Un-Answered Questions

Is c++ easier than python?

851

what is heat treatment and why is it done?

1201

Hi Masters, in Oracle Applications 11i, we hace 2 functions using the same form, i need to create 1 personalization, but that code must afect only one function.... how can i do that?

2270

Explain the role of metadata in SAP BODI. How do you capture and manage metadata for data integration jobs?

How to print element of Array?

1080

Does Kotlin support both Explicit conversion and Implicit conversions?

277

What is the pattern matching operator in ruby?

What is the usage of foreach operation in Pig scripts?

910

Why was c++ created?

1085

Explain list, tuple, set, and dictionary and provide at least one instance where each of these collection types can be used.

966

Is a mapping in hibernate?

424

Explain the difference between eav and flat model..

Determine the output of the following command: name=shubham && echo ‘my name is $name’.

1036

what is the diffeence between real time testing and GUI testing?

2283

Why do you need stage variables?

1229