Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Engineering Interview Questions

Questions Answers Views Company eMail

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

2 7252

Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

3 19201

. What should be the minimum and maximum ohmic value for earthing?

1 4611

Why DC Currents are not used in transformer?

4 8070

What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

2 4792

As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

3 7038

How to take the Vector Group Test in Transformer? What is the purpose of doing Vector Group Test?

2 4901

. Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV, 20kV, 30kV?

3 10558

Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

3 7833

Explain why the Voltage drop will happen in 3 Phase line?

2 5554

What is the equipment used to control the generator output?

4 6519

What are the factors to be considered during the Synchronization?

3 6400

What should be value of Circuit breaker operating time and tripping time?

3 6792

Why the CT Secondary is rated as 5A generally?

2 7007

At which time Synchronous generator act as a Synchronous Condenser?

4 9347

Un-Answered Questions { Engineering }

Differentiate between Zero and Negative sequence current

1905

What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps

1999

what is advantage and disadvantage of forward curve and backward curve blade of an id fan impeller and FD fan impeller??

1652

What is meant by system?

1064

how many Classification of fire extinguisher

2118

contractor receive 100 MT steel.after compliting the work the contractor refund 90 MT steel.How reconsilation of steel done?

2335

what is model question rrb junior engineer electrical gr.II

1950

What is bridge rectifier and explain with details

1919

What is the meaning of a blue land surveyors flag?

1445

What are the characteristics of scr?

1054

Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?

2172

A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

2263

What is the different between brass and bronze ?

1109

What is the Self & starter? what does it do in the in Genset

2169

Define cmrr of an opamp?

1261

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