Agree
Disagree
✅ The correct answer is option A.
Mechanical Engineering MCQs
Glazing in grinding wheels takes place when the
wheel is too hard or wheel revolves at a very high speed
wheel is too soft or wheel revolves at a very slow speed
wheel is too hard and wheel revolves at very slow speed
wheel is too soft and
✅ The correct answer is option A.
In a steam engine, the distance by which the inner edge of the D-slide valve overlaps the steam port is called lead.
Agree
Disagree
✅ The correct answer is option B.
Carnot cycle consists of
two constant volume and two isentropic processes
two isothermal and two isentropic processes
two constant pressure and two isentropic processes
one constant volume, o
✅ The correct answer is option B.
Moisture should be removed from refrigerants to avoid
freezing at the expansion valve
restriction to refrigerant flow
corrosion of steel plates
all of these
✅ The correct answer is option D.
In a psychrometric chart, dew point temperature lines are horizontal and non-uniformly spaced.
Correct
Incorrect
✅ The correct answer is option A.
According to Regnault’s law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) __________ with the change in pressure and temperature of the gas.
change
do not change
✅ The correct answer is option B.
The starting system includes
a battery, a starter, and an ignition switch
a battery, a distributor, and an ignition switch
a battery, a starter, and a distributor
a distributor, a start
✅ The correct answer is option A.
The thermal stress __________ upon the cross-sectional area of the bar.
depends
does not depend
✅ The correct answer is option B.
The shear force diagram of a cantilever beam of length l and carrying a uniformly distributed load of w per unit length will be
a right angled triangle
an issoscles triangle
an equilateral triangle
a rectangle
✅ The correct answer is option A.