1.143 N
11.43 N
114.3 N
1143 N
✅ The correct answer is option D.
Mechanical Engineering MCQs
An aftercooler is used to
remove impurities from air
reduce volume of air
cause moisture and oil vapour to drop out
cool the air
✅ The correct answer is option C.
The ability of a material to absorb energy in the plastic range is called
resilience
creep
fatigue strength
toughness
✅ The correct answer is option D.
When the axes of the shafts, over which the gears are mounted, move relative to a fixed axis, then the train is known as reverted gear train.
Right
Wrong
✅ The correct answer is option B.
The power of a boiler may be defined as
the ratio of heat actually used in producing the steam to the heat liberated in the furnace
the amount of water evaporated or steam produced in kg per kg of fuel burnt
the amount of water evaporated from and at 100° C into dry and saturated steam
the evaporation of 15.653 kg of water per hour from and at 100° C
✅ The correct answer is option B.
The ball bearings are provided with a cage
to reduce friction
to facilitate slipping of balls
to prevent the lubricant from flowing out
to maintain the balls at a fixed distance apart
✅ The correct answer is option D.
The value of gas constant (R) in S. I. units is
0.287 J/kgK
2.87 J/kgK
28.7 J/kgK
287 J/kgK
✅ The correct answer is option D.
An ideal fluid is frictionless and incompressible.
Correct
Incorrect
✅ The correct answer is option A.
In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon
total lift, total angle of lift, minimum radius of cam and cam speed
radius of circular arc, cam speed, location of centre of circular arc and roller diameter
mass of cam follower linkage, spring stiffness and cam speed
total lift, centre of gravity of the cam and cam speed
✅ The correct answer is option A.
A screw is said to be over hauling screw, if its efficiency is
less than 50%
more than 50%
equal to 50%
none of these
✅ The correct answer is option B.