MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines

Take a look at these MCQ Questions Compressors, Gas Turbines and Jet Engines for engineering interview questions and our tips on how to answer them. If you’re applying for an engineering internship, graduate scheme or entry-level job, you’ll face at least one interview as part of an engineering employer’s recruitment process. You may be interviewed by one or more members of the HR team, senior members of the engineering team you’d be joining or a mixture of both. In this section we will study MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines.

As well as questions about your reasons for applying to the role and the employer in question, engineering recruiters will be assessing your potential in the areas that is crucial to any engineering role: technical expertise. Engineers may be asked to perform feats of fantastic technical prowess, but it will be as as part of a Justice League rather than as a solo engineering super hero.

The interviewer is almost as nervous as the candidate in most interviews. You might wonder if you look confident enough, if you will hire the right person, or if you are asking the right engineering interview questions. The last question is arguably the most crucial part to worry about when you’re interviewing candidates.

MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines - Set - 2

Question 1:

Volumetric efficiency of a compressor with clearance volume
(a) increases with increase in compression ratio
(b) decreases with increase in compression ratio
(c) in not dependent upon compression ratio
(d) may increase/decrease depending on compressor capacity

Check Answer

Correct Answer – (B)

Question 2 :

Volumetric efficiency is
(a) the ratio of stroke volume to clearance volume
(b) the ratio of the air actually delivered to the amount of piston displacement
(c) reciprocal of compression ratio
(d) index of compressor performance

Check Answer

Correct Answer – (B)

Question 3 :

The net work input required for compressor with increase in clearance volume
(a) increases
(b) decreases
(c) remains same
(d) increases/decreases depending on com-pressor capacity

Check Answer

Correct Answer – (C)

Question 4 :

Ratio of compression is the ratio of
(a) gauge discharge pressure to the gauge intake pressure
(b) absolute discharge pressure to the ab-solute intake pressure
(c) pressures at discharge and suction cor-responding to same temperature
(d) stroke volume and clearance volume

Check Answer

Correct Answer – (B)

Question 5 :

Cylinder clearance in a compressor should be
(a) as large as possible
(b) as small as possible
(c) about 50% of swept volume
(d) about 100% of swept volume

Check Answer

Correct Answer – (B)

MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines

Question 6:

Volumetric efficiency of air compressors is of the order of
(a) 20-30%
(b) 40-50%
(c) 60-70%
(d) 70-90%

Check Answer

Correct Answer – (D)

Question 7:

Ratio of indicated h.p. to shaft h.p. in known as
(a) compressor efficiency
(b) isothermal efficiency
(c) volumetric efficiency
(d) mechanical efficiency

Check Answer

Correct Answer – (D)

Question 8:

Clearance volume in actual reciprocating compressors is essential
(a) to accommedate Valves in the cylinder head
(b) to provide cushioning effect and also to avoid mechanical bang of piston with cylinder head.
(c) to attain high volumetric efficiency
(d) to avoid mechanical bang of piston with cylinder head

Check Answer

Correct Answer – (B)

Question 9:

Ratio of indicated H.P. and brake H.P. is known as
(a) mechanical efficiency
(b) volumetric efficiency
(c) isothermal efficiency
(d) adiabatic efficiency
(e) relative efficiency.

Check Answer

Correct Answer – (A)

Question 10:

The ratio of work done per cycle to the swept volume in case of compressor is called
(a) compression index
(b) compression ratio
(c) compressor efficiency
(d) mean effective pressure
(e) compressor effectiveness.

Check Answer

Correct Answer – (D)

MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines

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