A certain gas occupies 2 cu-m at a temperature of 400?C. It receives heat at constant pressure till its temperature is doubled. The change in volume would be
A.3.8 cu-m
B.3.188 cu-m
C.0.038 cu-m
D.0.19 cu-m
E.0.019 cu-m
Category: Mechanical Engineering Mcqs
The damping capacity of a material is its capacity to
A.Withstand shear stress
B.Neutralise torsional stress
C.Absorb noise
D.Absorb shocks and vibrations
E.Provide rigid joints
The distance r from the centre of a tube of radius r0 where the average velocity occurs in laminar flow is
A.0.5 r0
B.0.707 r0
C.0.8 r0
D.r0
E.None of the above
Which of the following is a petroleum fuel?
A.Benzol
B.Methyl alcohol
C.Ethyl alcohol
D.Naphta
E.None of the above
Chaplets are made of
A.core sand
B.organic matter
C.wood
D.metal
The percentage of heat released from fuel air mixutre, in an internal combustion engine which is converted into useful work is roughly
A.10 percent
B.15 – 20 percent
C.20 – 25 percent
D.35 – 45 percent
E.60 – 64 percent
Metal patterns are used for
A.Precision castings
B.Small castings
C.Large castings
D.Large scale production of castings
E.Complicated castings
The continuity equation in compressible fluids is derived on the basis of
A.conservation of momentum
B.conservation of energy
C.conservation of mass
D.conservation of velocity head
The disadvantage of process layout system is
A.The initial investment is high
B.Machine failures and job difficulties seriously disrupt production schedules
C.The scope of production facilities is limited
D.Production time is longer, requiring more goods in process
E.High initial investment is required
Under standard atmospheric condition, the velocity of air is
A.236 m/s
B.336 m/s
C.436 m/s
D.536 m/s
