linear strain
lateral strain
volumetric strain
shear strain
✅ The correct answer is option A.
Mechanical Engineering MCQs
The compounding of turbines is done in order to
reduce speed of rotor
improve efficiency
reduce exit losses
all of these
✅ The correct answer is option D.
When two elastic bodies collide with each other,
the two bodies will momentarily come to rest after collision
the two bodies tend to compress and deform at the surface of contact
the two bodies begin to regain their original shape
all of the above
✅ The correct answer is option D.
Strain is equal to (where l = Original length, and δl = Change in length)
l/δl
δl/l
l.δl
l + δl
✅ The correct answer is option B.
In electric resistance welding, pressure is applied just after the completion of current.
TRUE
FALSE
✅ The correct answer is option A.
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the trans-missibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)
less than unity
equal to unity
greater than unity
zero
✅ The correct answer is option C.
When a body is subjected to a direct tensile stress (σ) in one plane, the maximum shear stress is __________ the maximum normal stress.
equal to
one-half
two-third
twice
✅ The correct answer is option B.
In order to double the period of simple pendulum, the length of the string should be
halved
doubled
quadrupled
✅ The correct answer is option C.
The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction)
α = 45° +
α = 45° –
α = 90° + φ
α = 90° – φ
✅ The correct answer is option B.
The compressive strength of cast iron is __________ that of its tensile strength.
equal to
less than
more than
✅ The correct answer is option C.