sum of two principal stresses
difference of two principal stresses
half the sum of two principal stresses
half the difference of
✅ The correct answer is option D.
Mechanical Engineering MCQs
Which of the following pump is generally used to pump highly viscous fluid?
Centrifugal pump
Reciprocating pump
Air lift pump
Screw pump
✅ The correct answer is option D.
On one side of a neutral axis of a beam, there is a tensile stress and on the other side of the beam there is a compressive stress.
Agree
Disagree
✅ The correct answer is option A.
The cylinder condensation or missing quantity may be reduced by
the efficient steam jacketing of the cylinder walls
superheating the steam supplied to the engine cylinder
keeping the expansion ratio small in each cylinder
all of the above
✅ The correct answer is option D.
The pressure of a liquid measured with the help of a piezometer tube is
vacuum pressure
gauge pressure
absolute pressure
atmospheric pressure
✅ The correct answer is option B.
In a belt drive, the velocity ratio is the inverse ratio of the diameters of driving and driven pulleys.
TRUE
FALSE
✅ The correct answer is option A.
In a shaper
tool is stationary and work reciprocates
work is stationary and tool reciprocates
tool moves over stationary work
tool moves over recipr
✅ The correct answer is option B.
Which of the following statement is correct about nose radius?
It improves tool life
It improves the surface finish
both (a) and (b)
none of these
✅ The correct answer is option C.
The rolling contact bearings as compared to sliding contact bearings have
small overall dimensions
accuracy of shaft alignment
low starting and low running friction except at very high speeds
all of the above
✅ The correct answer is option D.
The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
circular pitch
diametral pitch
module
none of these
✅ The correct answer is option B.