February 9, 2014

MECHANICAL ENGINEERING JOB INTERVIEW QUESTIONS

1.)What is the name given to process of removing non condensables in steam and other vapor cycles ?

Ans: Deaeration process.

2.). We often come across use of jet pumps in process industry ? What is the reason for this ?

Ans: Jet pumps are easy to maintain and can be used to transport gases, liquids and mixtures of both.

3.)When it can be said that a fluid is Newtonian ?

Ans: When the shear stress is directly proportional to velocity gradient.

4.)Out of 2 stroke SI engine, 4 stroke SI engine, and 4 stroke CI engine, how the brake thermal efficiency behaves if these are to be used for road vehicles ?

Ans: 4 stroke CI engine has highest brake thermal efficiency followed by 4 stroke SI engine and the 2 stroke SI has lowest brake thermal efficiency

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