length of path of contact to the circular pitch
length of arc of contact to the circular pitch
length of arc of approach to the circular pitch
length of arc of reces
✅ The correct answer is option B.
Mechanical Engineering MCQs
Hot piercing is extensively used for making bolts and nuts.
Yes
No
✅ The correct answer is option B.
In process annealing, the hypo-eutectoid steel is
heated from 30° C to 50° C above the upper critical temperature and then cooled in still air
heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace
heated below or close
✅ The correct answer is option D.
The material generally used for air-craft components is
mild steel
high speed steel
stainless steel
aluminium
✅ The correct answer is option D.
Which of the following statement is correct in regard to centreless grinding?
The workpiece is supported throughout its entire length as grinding takes place.
It is a continuous process and adopted for production work.
It requires no holding device for the work.
all of the above
✅ The correct answer is option D.
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in
transverse vibrations
torsional vibrations
longitudinal vibrations
all of these
✅ The correct answer is option A.
The relation between equivalent length (L) and actual length (l) of a column for one end fixed and the other end hinged is
L = l/2
L = l/2
L = l
L = 4l
✅ The correct answer is option B.
In the below figure, curve D represents mild steel.
Yes
No
✅ The correct answer is option A.
A governor is said to be stable, if the
radius of rotation of balls increases as the equilibrium speed decreases
radius of rotation of balls decreases as the equilibrium speed decreases
radius of rotation of balls increases as the equilibrium speed increases
radius of rotation of
✅ The correct answer is option C.
In value engineering, important consideration is given to
customer satisfaction
function concept
profit maximisation
cost reduction
✅ The correct answer is option D.