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 - 1

Question 1:

Isothermal compression though most efficient, but is not -practicable because
(a) ityrequires very big cylinder
(b) it does not increase pressure much
(c) it is impossible in practice
(d) compressor has to run at very slow speed to achieve it

Check Answer

Correct Answer – (D)

Question 2 :

What will be the volume of air at 327°C if its volume at 27°C is 1.5 m³/mt
(a) 3 m³/mt .
(b) 1.5 m³/mt
(c) 18 m³/mt’
(d) 6 m³/mt
(e) 0.75 m³/mt.

Check Answer

Correct Answer – (A)

Question 3 :

An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes
(a) one adiabatic, two isobaric, and one constant volume
(b) two adiabatic and two isobaric
(c) two adiabatic, one isobaric and one constant volume
(d) one adiabatic, one isobaric and two constant volume
(e) two isobaric, two adiabatic and one constant volume.

Check Answer

Correct Answer – (A)

Question 4 :

Aeroplanes employ following type of compressor
(a) radial flow
(b) axial flow
(c) centrifugal
(d) combination of above

Check Answer

Correct Answer – (A)

Question 5 :

Isothermal compression efficiency, even when running at high speed, can be approached by using
(a) multi-stage compression
(b) cold water spray
(c) both (a) and (b) above
(d) fully insulating the cylinder
(e) high stroke.

Check Answer

Correct Answer – (C)

MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines

Question 6:

The work done per unit mass of air in compression will’be least when n is equal to
(a) 1
(b) 1.2 ,
(c) 1.3
(d) 1.4

Check Answer

Correct Answer – (A)

Question 7:

An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes
(a) one adiabatic, two isobaric, and one constant volume
(b) two adiabatic and two isobaric
(c) two adiabatic, one isobaric and one constant volume,
(d) one adiabatic, one isobaric and two constant volume
(e) two isobaric, two adiabatic and one constant volume.

Check Answer

Correct Answer – (B)

Question 8:

Inter cooling in compressors
(a) cools the delivered air
(b) results in saving of power in compressing a given volume to given pressure
(c) is the standard practice for big compressors
(d) enables compression in two stages
(e) prevents compressor jacket running very hot.

Check Answer

Correct Answer – (B)

Question 9:

Compression efficiency is compared against
(a) ideal compression
(b) isothermal compression.
(c) botii isothermal and adiabatic compression
(d) isentropic compression

Check Answer

Correct Answer – (B)

Question 10:

The compressor capacity with decrease in suction temperature
(a) increases
(b) decreases
(c) remains unaffected
(d) may increase or decrease depending on compressor capacity
(e) increases upto certain limit and then decreases.

Check Answer

Correct Answer – (A)

MCQ Questions Mechanical Engineering Compressors, Gas Turbines and Jet Engines

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