shearing
piercing
punching
blanking
✅ The correct answer is option C.
Mechanical Engineering MCQs
The design of pin of a rocker arm of an I.C. engine is based on
bearing failure
shearing failure
bending failure
all of these
✅ The correct answer is option D.
Select the correct statement
Weber’s number is the ratio of inertia force to elastic force.
Weber’s number is the ratio of gravity force to surface tension force.
Weber’s number is the ratio of viscous force to pressure force.
Weber’s number is the
✅ The correct answer is option D.
A pitot tube is used to measure the
velocity of flow at the required point in a pipe
pressure difference between two points in a pipe
total pressure of liquid flowing in a pipe
discharge through a pi
✅ The correct answer is option A.
The contact ratio for gears is
zero
less than one
greater than one
none of these
✅ The correct answer is option C.
In a steam engine, the link constitutes a
piston, piston rod and crosshead
connecting rod with big and small end brasses, caps and bolts
crank pin, crankshaft and flywheel
all of the above
✅ The correct answer is option D.
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the
unbalanced couples are caused only at higher speeds
unbalanced forces are not dangerous at higher speeds
effects of unbalances are proportional to the square of the speed
effects of unbalances
✅ The correct answer is option C.
The two elements of a pair are said to form a higher pair, when they
have a surface contact when in motion
have a line or point contact when in motion
are kept in contact by the action of external forces, when in motion
permit relative motion
✅ The correct answer is option B.
The maximum efficiency of a square threaded screw is
✅ The correct answer is option A.