✅ The correct answer is option B.
Mechanical Engineering MCQs
The state of a substance whose evaporation from its liquid state is complete, is known as
vapour
perfect gas
air
steam
✅ The correct answer is option B.
The tool life is said to be over if
poor surface finish is obtained
there is sudden increase in cutting forces and power consumption
overheating and fuming due to heat of friction starts
all of the above
✅ The correct answer is option D.
In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to
reduce vibration
reduce slip
ensure uniform loading
ensure proper alignmen
✅ The correct answer is option C.
A numerical method of identification of tool is known as tool signature.
Correct
Incorrect
✅ The correct answer is option A.
The shear force of a cantilever beam of length l and carrying a gradually varying load from zero at the free end and w per unit length at the fixed end is __________ at the fixed end.
zero
wl/4
wl/2
wl
✅ The correct answer is option C.
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be
45 to 60%
63 to 70%
70 to 83%
80 to 90%
✅ The correct answer is option C.
In the assembly of pulley, key and shaft
pulley is made the weakest
key is made the weakest
key is made the stongest
all the three are desi
✅ The correct answer is option B.
Which of the following statement is correct for gears ?
The addendum is less than the dedendum
The pitch circle diameter is the product of module and number of teeth
The contact ratio means the number of pairs of teeth in contact
all of the above
✅ The correct answer is option D.
A two stroke cycle engine occupies larger floor area than a four stroke cycle engine.
Yes
No
✅ The correct answer is option B.