Absolute pressure is
A.Gauge pressure
B.Gauge pressure + 1.03 kg/cm2
C.Gauge pressure-atmospheric pressure
D.Gauge pressure + atmospheric pressure
E.None of the above
Category: Mechanical Engineering Mcqs
A self-supporting steel chimney transmits the lateral forces to the foundation by
A.fixed beam action
B.proposed beam action
C.cantilever action
D.simply supported beam action
Aluminium is not a very good material for die casting because
A.it is very light but strong
B.its melting point is high, it erodes the die surface and tends to react chemically with die
C.it cools much slowly
D.none of the above
The point of contraflexural can exist in a
A.Simply supported beams only
B.Cantilever
C.Beam with overhangs but without any load on the overhanging sections
D.Beam fixed at both ends
E.All of the above
The main constituent of moulding sand is
A.Carbon
B.Graphite
C.Clay
D.Silica
E.Hydrocarbons
A body which does not contain voids or empty spaces is known as
A.Continuous body
B.An isotropic body
C.Heterogeneous body
D.Crystalline body
E.None of the above
The rotor of a ship rotates in anticlock wise direction when viewed from the bow end and the ship takes a left turn. The effect of gyroscopic couple on the ship is
A.to lower the bow and raise the stern
B.to raise the bow and lower then stern
C.to roll the ship slightly clockwise when viewed fro bow end
D.None of the above
In case of gears the pressure angle is
A.The angle between the line of action and the common tangent to the pitch surface in the plane of rotation
B.The angle between the normal to the point of contact and the shaft axis
C.The angle between the normal to dedendum at the path point and tangent to the dedendum at the path point and tangent to the dedendum at the same point
D.The angle of obliquity between the tangent drawn at the point of contact of the two mating gears
E.None of the above
Gas laws are applicable to
A.Gases only
B.Gases and wet vapours
C.Gases and dry vapours
D.Gases and dry and wet vapours
E.Gases and dry, wet and super-heated vapours
Average fixed cost
A.falls as long as output rises
B.rises as long as output rises
C.is determined by adding average variable cost and average total cost
D.is cut by marginal cost at its lowest point
