nickel
chromium
nickel and chromium
sulphur, lead and phos
✅ The correct answer is option C.
Mechanical Engineering MCQs
In order to prevent knocking in spark ignition engines, the charge away from the spark plug should have
low density
low temperature
long ignition delay
all of these
✅ The correct answer is option D.
The intensity of pressure at any point, in a liquid, is
directly proportional to the area of the vessel containing liquid
directly proportional to the depth of liquid from the surface
directly proportional to the length of the vessel containing liquid
inversely proportional
✅ The correct answer is option B.
In the levers of first type, the mechanical advantage is __________ one.
less than
equal to
more than
✅ The correct answer is option C.
In compression ignition engines, swirl denotes a
haphazard motion of the gases in the chamber
rotary motion of the gases in the chamber
radial motion of the gases in the chamber
none of the above
✅ The correct answer is option B.
A cotter joint is used to transmit
axial tensile load only
axial compressive load only
combined axial and twisting loads
axial tensile or compr
✅ The correct answer is option D.
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is
heated and dehumidified
heated and humidified
cooled and humidified
cooled and dehumidifie
✅ The correct answer is option B.
Shift is a casting defect which
results in a mismatching of the top and bottom parts of a casting
results in general enlargement of a casting
occurs near the ingates as rough lumps on the surface of a casting
occurs as sand patches
✅ The correct answer is option A.
A boot-strap air cooling system has
one heat exchanger
two heat exchangers
three heat exchangers
four heat exchangers
✅ The correct answer is option B.
According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
remains constant
increases
decreases
✅ The correct answer is option B.