same
lower
higher
✅ The correct answer is option C.
Mechanical Engineering MCQs
A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The minimum normal stress will be
400 MPa
500 MPa
900 MPa
1400 MPa
✅ The correct answer is option A.
The elasticity is the property of a material which enables it to
regain its original shape after deformation when the external forces are removed
draw into wires by the application of a tensile force
resist fracture due to high impact loads
retain deformation pro
✅ The correct answer is option A.
Cast iron pipes are mainly used
for conveying steam
in water and sewage systems
in pressure lubrication systems on prime movers
all of the above
✅ The correct answer is option B.
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine ?
inlet valve closing after bottom dead centre
inlet valve closing before bottom dead centre
inlet valve opening before top dead centre
exhaust valve closing
✅ The correct answer is option B.
The face angle of a bevel gear is equal to
pitch angle – addendum angle
pitch angle + addendum angle
pitch angle – dedendum angle
pitch angle + dedendum
✅ The correct answer is option B.
In a hydraulic power steering system, the power steering pump is driven by a
belt-driven by camshaft
chain-driven by crankshaft
belt-driven by driveshaft
belt-driven by cranksh
✅ The correct answer is option D.
A nuclear power plant differs from a conventional steam power station only in the steam generating part.
Agree
Disagree
✅ The correct answer is option A.
In machining metals, chips break due to __________ of work material.
toughness
ductility
elasticity
work hardening
✅ The correct answer is option D.
Logarithmic mean temperature difference is the same as the arithmetic mean temperature difference.
Agree
Disagree
✅ The correct answer is option B.