Plasticisers are added to plastic compounds to
A.Provide a protective layer
B.Improve resistance to acids
C.Improve resistance to alkalies
D.Increase tensile strength
E.Improve softness and flexibility
Category: Mechanical Engineering Mcqs
Which of the following could be the unit of rotational inertia of a body in CGS system?
A.gm-cm2
B.gm-cm4
C.cm4
D.kg-cm2
Ferrite is
A.Amorphous and brittle
B.Soft and ductile
C.Hardenable under rapid cooling
D.Present in abundance in high carbon steel
Ball bearing races are
A.Turned
B.Ground
C.Nickel plated
D.Buffed
E.Lapped
The total radiant energy emitted by a plane surface per unit area and unit time is called
A.Radiant flux density
B.Total absorptivity
C.Radiant energy
D.Radiant intensity
E.None of the above
Bhakra dam is constructed on river
A.Yamuna
B.Sutlej
C.Chambal
D.Beas
E.Chenab
According to Chvorinov’s equation, the solidification time of castings is
A.directly proportional to the volume of the castings
B.Directly proportional to square of the volume of the casting
C.inversely proportional to square of the volume of the casting
D.inversely proportional to the volume the casting
The specific speed for axial flow turbine varies from
A.0 – 45
B.10 – 100
C.80 – 200
D.200 – 300
E.None of the above
Which of the following is the broadcast concept:
A.Job description
B.Job analysis
C.Position description
D.Position specification
E.Job specification
Thermal efficiency of a compression ignition engine may be of the order of
A.20%
B.35%
C.50%
D.70%
E.75%
