TRUE
FALSE
✅ The correct answer is option A.
Mechanical Engineering MCQs
In metal machining, the zone where the maximum heat is generated due to the plastic deformation of metal, is called
friction zone
work-tool contact zone
shear zone
none of these
✅ The correct answer is option C.
An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called
addendum circle
dedendum circle
pitch circle
clearance circle
✅ The correct answer is option C.
A body floating in a liquid is said to be not in equilibrium if its metacentre lies below its centre of gravity.
Agree
Disagree
✅ The correct answer is option A.
The tool may fail due to
cracking at the cutting edge due to thermal stresses
chipping of the cutting edge
plastic deformation of the cutting edge
all of these
✅ The correct answer is option D.
During flow through a nozzle, no heat is supplied or rejected by the steam.
Agree
Disagree
✅ The correct answer is option A.
The ratio of emissive power of a body to the emissive power of a perfectly black body is called emissivity.
Agree
Disagree
✅ The correct answer is option A.
A double strap butt joint with equal straps is
always in single shear
always in double shear
either in single shear or double shear
none of these
✅ The correct answer is option B.
The capillary tube is not used in large capacity refrigeration systems because
cost is too high
capacity control is not possible
it is made of copper
required pressure drop
✅ The correct answer is option B.