velocity of steam
specific volume of steam
dryness fraction of steam
all of these
✅ The correct answer is option D.
Mechanical Engineering MCQs
In inventory control theory, the economic order quantity is
average level of inventory
optimum lot size
capacity of a warehouse
lot size corresponding to break-even analysis
✅ The correct answer is option B.
Nusselt number (NN) is given by
✅ The correct answer is option A.
Nuclear reactors are used
to produce heat for thermoelectric power
to produce fissionable material
to propel ships, submarines, aircrafts
all of these
✅ The correct answer is option D.
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)
Cd x b2gH
Cd x b2g x H
Cd x b2g x H3/2
Cd x b2g x H2
✅ The correct answer is option C.
For a two stage reciprocating compressor, compression from p1 to p3 is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p2 is given by
p2 = (p1 + p3)/2
p2 = p1.p3
P2 = Pa x p3/p1
p2 = pa p3/p1
✅ The correct answer is option B.
Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is
heavy water
graphite
carbon dioxide
no moderator is needed
✅ The correct answer is option D.
Stress concentration is caused due to
variations in load acting on a member
variations in properties of materials in a member
abrupt change of cross-section
all of these
✅ The correct answer is option C.
The sum of internal energy (U) and the product of pressure and volume (p.v) is known as
workdone
entropy
enthalpy
none of these
✅ The correct answer is option C.
A steel bar of 5 mm is heated from 15° C to 40° C and it is free to expand. The bar Will induce
no stress
shear stress
tensile stress
compressive stress
✅ The correct answer is option A.