have contact at the bottom most of the bearing
move towards right of the bearing making metal to metal contact
move towards right of the bearing making no metal to metal contact
move towards left of t
✅ The correct answer is option C.
Mechanical Engineering MCQs
Power required to drive a centrifugal pump is __________ proportional to N3.
directly
inversely
✅ The correct answer is option A.
The austenite is a solid solution of carbon or iron carbide in gamma-iron.
Correct
Incorrect
✅ The correct answer is option A.
The throttling process is an irreversible steady flow expansion process.
Correct
Incorrect
✅ The correct answer is option A.
In a four stroke cycle petrol engine, the expansion
starts at top dead centre and ends at bottom dead centre
starts at 30° before top dead centre and ends at 50° before bottom dead centre
starts at 30° after top dead centre and ends at 50° after bottom dead centre
may start and end anyw
✅ The correct answer is option B.
An open cycle gas turbine works on
Carnot cycle
Otto cycle
Joule’s cycle
Stirling cycle
✅ The correct answer is option C.
The ability of a material to undergo large permanent deformation with the application of a tensile force, is called ductility.
Correct
Incorrect
✅ The correct answer is option A.
When a metal or alloy is cold worked,
its hardness and strength increases
it is worked below recrystallisation temperature
Both (A) and (B)
None of these
✅ The correct answer is option C.
The oxy-acetylene gas used in gas welding produce a flame temperature of
1800°C
2100°C
2400°C
3200°C
✅ The correct answer is option D.
When a body is subjected to a direct tensile stress (σ) in one plane, then tangential or shear stress on an oblique section of the body inclined at an angle θ to the normal of the section is
σ sin 2θ
σ cos 2θ
σ/2 sin 2θ
σ/2 cos 2θ
✅ The correct answer is option C.