Which of the following constituent of air has the least percentage?
A.Argon
B.Carbon dioxide
C.Xenon
D.Neon
E.Helium
Category: Mechanical Engineering Mcqs
Which of the following is used as working fluid in solar Rankine cycle?
A.Steam
B.Air
C.Hydrogen
D.Helium
The method of increasing fatigue resistance by over-stressing the metal by successively increasing loading is known as
A.Coaxing
B.Relaxing
C.Compounding
D.Bauschinger effect
E.None of the above
When small castings are to be produced in large numbers, the type of pattern generally used is
A.Solid pattern
B.Loose piece pattern
C.Split pattern
D.Sweep pattern
E.Match-plate pattern
Which of the following is not a positive displacement compressor?
A.Centrifugal compressor?
B.Single stage reciprocating compressor
C.Double acting reciprocating compressor
D.Roots blower
E.Vane type compressor
The continuity equation
A.relates mass rate of flow along a stream tube
B.expresses the relation between energy and work
C.requires that the Newtons second law of motion is satisfied at every point in the fluid
D.relates the momentum per unit volume for two point on a stream line
In laminated spring the strips are provided in different lengths for
A.Material economy
B.Reducing the weight
C.Improved sppearance
D.Space consideration of the utility stage
E.Equal distribution of stress
In all irreversible processes, the entropy of the system
A.Increases
B.Reduces to zero
C.Remains constant
D.Sometimes increases and sometimes decreases
E.Depends on medium
All of the following are the characteristics of mixed economy EXCEPT:
A.Co-existence of private and public sectors
B.Economic welfare
C.Economic equality
D.Govt. control over huge capital investment industries
