In a S.I. engine the intake valve closes
A.At BDC
B.At TdDC
C.35? to 80? after BDC
D.25? to 80? before BDC
E.10? to 20? before
Category: Mechanical Engineering Mcqs
The number of natural frequencies for three rotor system will be
A.One
B.Two
C.Three
D.Four
E.Six
If two commodities are jointly demanded they are
A.Inferior goods
B.Compliments
C.Necessities
D.Substitutes
E.Multiple goods
Torsional rigidity is
A.The torque that produces rotation of unit r.p.m. in a shaft
B.The torque that transmits one HP at one r.p.m.
C.The torque that produces a twist of one radian in a shaft of unit diameter
D.The torque that produces a twist of one radian in a shaft of unit length
E.None of the above
A pivoted segment type thrust bearing is used in order to provide
A.Uniform velocity
B.Balanced lead
C.Uniform wear
D.Uniform frictional forces
E.A converging film of oil
For a beam of length L fixed at end A and simply supported at end B and loaded uniformly by a load W the maximum bending moment will occur at
A.A
B.B
C.Centre C
D.Between AC
E.Between CD
Water rises in a capillary tube to a height h. It will rise to a height more than h.
A.on the surface of moon
B.at the poles
C.in a lift moving up with an acceleration
D.in all the above cases
Transportation by locomotives is known as
A.Dragging
B.Hauling
C.Pushing
D.Lifting
A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be
A.1 sec
B.2 sec
C.3 sec
D.4 sec
E.5 sec
An organisation may decide to buy a component from outside when
A.existing production facilities are limited
B.there is need to maintain stability in employment
C.cost is less to buy as compared to production cost
D.All of the above
