air and fuel
only fuel
only air
none of these
✅ The correct answer is option C.
Mechanical Engineering MCQs
The number of fire tubes in a Cochran boiler are
75
115
165
225
✅ The correct answer is option C.
When a body is subjected to longitudinal vibrations, the stress induced in a body will be tensile or compressive stress.
Correct
Incorrect
✅ The correct answer is option A.
The velocity of a body on reaching the ground from a height h, is
✅ The correct answer is option C.
The pressure at the end of compression, in petrol engines, is approximately
10 bar
20 bar
25 bar
35 bar
✅ The correct answer is option A.
A riveted joint is a __________ fastening.
permanent
temporary
✅ The correct answer is option A.
When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as
centre of pressure
centre of gravity
centre of buoyancy
metacentre
✅ The correct answer is option D.
The transverse fillet welded joints are designed for
tensile strength
compressive strength
bending strength
shear strength
✅ The correct answer is option A.
Factor of safety is defined as the ratio of
ultimate stress to working stress
working stress to ultimate stress
breaking stress to ultimate stress
ultimate stress to bre
✅ The correct answer is option A.
Blading efficiency is also known as
stage efficiency
diagram efficiency
nozzle efficiency
none of these
✅ The correct answer is option B.