fluctuation of energy
maximum fluctuation of energy
coefficient of fluctuation of energy
none of these
✅ The correct answer is option A.
Mechanical Engineering MCQs
The shear stress at a point in a shaft subjected to a torque is
directly proportional to the polar moment of inertia and to the distance of the point from the axis
directly proportional to the applied torque and inversely proportional to the polar moment of inertia
directly proportional to the applied torque and the polar moment of inertia
inversely proportional
✅ The correct answer is option B.
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)
ω2 x OQ
ω2 x OQ sin θ
ω2 x OQ cos θ
ω2 x OQ tan θ
✅ The correct answer is option A.
In watches, the spring is used to absorb shocks and vibrations.
Yes
No
✅ The correct answer is option B.
Which of the following statement is true about brittle fracture?
High temperature and low strain rates favour brittle fracture
Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture
Brittle fracture is always preceded by noise
Cup and cone formation
✅ The correct answer is option B.
A locking device extensively used in automobile industry is a
jam nut
castle nut
sawn nut
ring nut
✅ The correct answer is option B.
The advantage of a broaching operation is that
rate of production is very high
high accuracy and high class of surface finish is possible
roughing and finishing cuts are completed in one pass of the tool
all of the above
✅ The correct answer is option D.
The relative humidity lines on a psychrometric chart are
vertical and uniformly spaced
horizontal and uniformly spaced
horizontal and non-uniformly spaced
curved lines
✅ The correct answer is option D.