to produce heat for thermoelectric power
to produce fissionable material
to propel ships, submarines, aircrafts
all of these
✅ The correct answer is option D.
Engineering MCQs
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.
A ship with jet propulsion draws water through inlet orifices at right angles to the direction of its motion. The propelling force of the jet is (where a = Area of the jet, Vr = Relative velocity of the jet and ship = V + v, v = Velocity of the ship, and V = Velocity of the jet issuing from the ship)
✅ The correct answer is option B.
Closed packed hexagonal space lattice is found in
zinc, magnesium, cobalt, cadmium, antimony and bismuth
gamma-iron, aluminium, copper, lead, silver and nickel
alpha-iron, tungsten, chromium and molybdenum
none of the above
✅ The correct answer is option A.
In open combustion chamber in diesel engines, the shape and layout of the piston crown, the inlet port and the valve produce the turbulent effect of fuel mixture.
TRUE
FALSE
✅ The correct answer is option A.
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.
The sliding pairs, turning pairs and screw pairs form lower pairs.
TRUE
FALSE
✅ The correct answer is option A.