A gas having adiabatic index y = 1.4 and atmic weight A will have molecular weight
A.A
B.3A
C.2A
Category: Mechanical Engineering Mcqs
In multistages turbines by introducting reheating
A.Thermal efficiency improves
B.The output of turbine increases
C.Work done by compressor reduces
D.The ratio compressor compressor work/turbine output decreases
E.None of the above
Two thermometers are constructed in the same way except that one has a spherical bulb and the other an elongated cylindrical bulb. Which one will respond quickly to temperature change?
A.Spherical bulb thermometer
B.Cylindrical bulb thermometer
C.Both will respond in identical manner
D.Cannot be ascertained on the basis of information provided
A Bell-Coleman cycle is
A.Reversed Carnot cycle
B.Reversed Joule cycle
C.Reversed Otto cycle
D.Reversed Rankine cycle
E.Reversed Sterling cycle
The percentage of sulphur in pig iron is generally
A.0.01% to 0.3%
B.0.3% to 0.55%
C.0.6% to 0.79%
D.0.8% to 0.9%
Which of the following is a displacement compressors?
A.Reciprocating air compressor
B.Vane blower
C.Centrifugal blower
D.Axial flow compressors
Which one of the following methods cannot be used for turning internal tapers?
A.Tail stock offset
B.Cross slide
C.Compound slide
D.All of the above
E.None of the above
Quality of diesel oil can be expressed in terms of cetane number and also
A.aniline point
B.API gravity
C.SAE number
D.diesel index
A bushed pin flexible type coupling is used to join two shafts which
A.Are not in exact alignment
B.Are not coplanar
C.Change position during operation
D.Are inclined
E.None of the above
In orthogoual cutting of metals the cutting edge is
A.Perpendicular to the direction of tool travel
B.Perpendicular to the work piece
C.Perpendicular to the shear plane
D.Perpendicular to the axis of cutting tool
E.None of the above
