increases expansion ratio of steam
reduces back pressure of steam
reduces temperature of exhaust steam
all of these
✅ The correct answer is option D.
Engineering MCQs
A 15 mm drilling machine means that it can drill a hole
of maximum diameter 15 mm
in 15 mm thick plates
having cross-sectional area of 15 mm2
none of these
✅ The correct answer is option A.
If clearance volume of I.C. engines is increased, the compression ratio will
increase
decrease
remain constant
be doubled
✅ The correct answer is option B.
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)
✅ The correct answer is option B.
The velocity of the rubbing surface __________ with the distance from the axis of the bearing.
increases
decreases
✅ The correct answer is option A.
A steel containing 0.8% carbon is known as
eutectoid steel
hyper-eutectoid steel
hypo-eutectqid steel
none of these
✅ The correct answer is option A.
When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a
screw pair
spherical pair
turning pair
sliding pair
✅ The correct answer is option D.
Turbulent flow takes place at high velocities.
Agree
Disagree
✅ The correct answer is option A.
The rivets are used for __________ fastenings.
permanent
temporary
✅ The correct answer is option A.