✅ The correct answer is option B.
Mechanical Engineering MCQs
Piercing is an operation of cutting
a cylindrical hole in a sheet of metal by the punch and the die
a hole (other than cylindrical) in a sheet of metal by the punch and the die
a flat sheet to the desired shape
a number of holes even
✅ The correct answer is option B.
When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
varies as the square of the radial distance
increases linearly as its radial distance
increases as the square of the radial distance
decreases as the squar
✅ The correct answer is option A.
In order to determine the stresses in a thin cylinder due to an internal pressure, it is assumed that
the effect of curvature of the cylinder wall is neglected
the tensile stresses are uniformly distributed over the section of the walls
the effect of the restraining action of the heads at the end of the pressure vessel is neglected
all of the above
✅ The correct answer is option D.
When two pulleys of different diameters are connected by means of an open belt, the angle of contact at the __________ pulley must be taken into consideration.
smaller
larger
✅ The correct answer is option A.
The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
helix or rake angle
point angle
chisel edge angle
lip clearance angle
✅ The correct answer is option A.
When two parallel and coplaner shafts are connected by gears having teeth parallel to the axis of the shaft, the arrangement is known as spiral gearing.
Yes
No
✅ The correct answer is option B.
At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal.
Correct
Incorrect
✅ The correct answer is option A.
The specific humidity during humidification process
remains constant
increases
decreases
✅ The correct answer is option B.
For riveting, the size of hole drilled in plates is __________ shank diameter of rivet.
equal to
less than
greater than
✅ The correct answer is option C.