Isothermal compression though most efficient, but is not practicable because

A It requires 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

Correct Answer: Compressor has to run at very slow speed to achieve it

Isothermal compression though most efficient, but is not practicable because Compressor has to run at very slow speed to achieve it
Bissoy MCQ
#Mechanical Engineering #Compressors #Gas Turbines And Jet Engines

Related Questions

The work done in isothermal compression compared to that in adiabatic compression will be
A Less
B More
C Same
D More or less depending upon the extent of work done
If h₁ = inner film co-efficient and /h₂ = outer film co-efficient, then the overall heat transfer co-efficient is
A Always less than h₁
B Always between h₁ and h₂
C Always higher than h₂
D Dependent on metal resistance
In multistage compressor, the isothermal compression is achieved by
A Employing inter-cooler
B By constantly cooling the cylinder
C By running compressor at very slow speed
D By insulating the cylinder
Isothermal compression efficiency can be attained by running the compressor
A At very high speed
B At very slow speed
C At average speed
D At zero speed
Isothermal compression efficiency, even when running at high speed, can be approached by using
A Multistage compression
B Cold water spray
C Both (A) and (B) above
D Fully insulating the cylinder
For an isothermal reversible compression of an ideal gas
A Only ΔE = 0
B Only ΔH =0
C ΔE = ΔH = 0
D DQ = dE
The change in __________ is equal to the reversible work for compression in steady state flow process under isothermal condition.
A Internal energy
B Enthalpy
C Gibbs free energy
D Helmholtz free energy
Though he is rich , he is unhappy . Here 'Though' is a/an ____ .
A Preposition
B Noun
C Conjunction
D Adverb
Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as
A $${\frac{1}{8}^{{\text{th}}}}$$ of the span
B $${\frac{1}{{10}}^{{\text{th}}}}$$ of the span
C $${\frac{1}{{12}}^{{\text{th}}}}$$ of the span
D $${\frac{1}{{16}}^{{\text{th}}}}$$ of the span
Highest useful compression ratio (HUCR) is the highest compression ratio at which the
A Engine can run
B Engine gives maximum output
C Engine is most efficient
D Fuel can be used in a test engine without knocking

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