cetane number 65
octane number 65
qetane number 35
octane number 35
✅ The correct answer is option B.
Mechanical Engineering MCQs
The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon
work material
tool material
working conditions
type of chip produced
✅ The correct answer is option B.
Newton’s law of viscosity is a relationship between
pressure, velocity and temperature
shear stress and rate of shear strain
shear stress and velocity
rate of shear strain a
✅ The correct answer is option B.
Negative rakes are used for
carbide tools
heavy loads
harder materials
all of these
✅ The correct answer is option D.
Which of the following statement is correct for involute gears?
The interference is inherently absent.
The variation in centre distance of shafts increases radial force.
A convex flank is always in contact with concave flank.
The pressure angle is
✅ The correct answer is option D.
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be
forward curved
backward curved
radial
none of these
✅ The correct answer is option A.
The most accurate ignition system of a spark ignition engine is
magneto system
battery system
electronic control unit system
magneto and electronic
✅ The correct answer is option C.
The time of flight of a projectile on downward inclined plane depends upon
angle of projection
angle of inclination of the plane
both (a) and (b)
none of these
✅ The correct answer is option C.
The cutting speed for drilling copper with high speed steel drills varies from
10 to 20 m/min
18 to 30 m/min
24 to 45 m/min
60 to 90 m/min
✅ The correct answer is option B.
In a multiple V-belt drive, all the belts should stretch at the same rate.
Agree
Disagree
✅ The correct answer is option A.