brown coal
peat
coking bituminous coal
non-coking bituminous
✅ The correct answer is option D.
Engineering MCQs
In a vapour compression system, the condition of refrigerant is dry saturated vapour
before entering the compressor
after leaving the compressor
before entering the condenser
after leaving the cond
✅ The correct answer is option A.
In considering friction of a V-thread, the virtual coefficient of friction (μ1) is given by
μ1 = μ sin β
μ1 = μ cos β
✅ The correct answer is option D.
In order to give a complete secondary balance of a multi-cylinder in-line engine,
the algebraic sum of the secondary forces must be equal to zero
the algebraic sum of the couples about any point in the plane of the secondary forces must be equal to zero
both (a) and (b)
none of these
✅ The correct answer is option C.
The coefficient of performance of vapour compression refrigeration system is quite __________ as compared to air refrigeration system.
low
high
✅ The correct answer is option B.
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is
bending stress only
a combination of torsional shear stress and bending
direct shear stress only
a combination of bendi
✅ The correct answer is option A.
The centre of gravity of a right circular solid cone is at a distance of __________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)
h/2
h/3
h/4
h/6
✅ The correct answer is option C.
Which of the following metal shrinks most from molten state to solid state?
Cast iron
Cast steel
Brass
Admirality metal
✅ The correct answer is option D.
The air power of the compressor is also known as
indicated power
brake power
frictional power
none of these
✅ The correct answer is option A.
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as
blow off cock
fusible plug
superheater
stop valve
✅ The correct answer is option D.