l = (j + 2)
l = (j + 2)
l = (j + 3)
l = j + 4
✅ The correct answer is option B.
Mechanical Engineering MCQs
The ratio of the driving tensions for V-belts is __________ times that of flat belts. (where β = Semi-angle of the groove)
sin β
cos β
cosec β
sec β
✅ The correct answer is option C.
When a material is loaded within elastic limit, the material will regain its shape and size when the load is removed.
Agree
Disagree
✅ The correct answer is option A.
Separators are generally used in air compressor installations
before the intercooler
after the intercooler
between the aftercooler and receiver
before first stage suc
✅ The correct answer is option C.
In aircraft, air refrigeration Cycle is used because of
low weight per tonne of refrigeration
high heat transfer rate
low temperature at high altitudes
higher coefficient of
✅ The correct answer is option A.
The strength is the ability of a material to resist
deformation under stress
externally applied forces with breakdown or yielding
fracture due to high impact loads
none of these
✅ The correct answer is option B.
In sheet metal work, the cutting force on the tool can be reduced by
grinding the cutting edges sharp
increasing the hardness of tool
providing shear on tool
increasing the hardnes
✅ The correct answer is option A.
The two reference fuels used for cetane rating are
cetane and iso-octane
cetane and alpha-methyl naphthalene
cetane and normal heptane
cetane and tetra ethyl
✅ The correct answer is option B.
The knocking tendency in compression ignition engines for a given fuel will be
enhanced by decreasing compression ratio
enhanced by increasing compression ratio
dependent on other factors
none of the above
✅ The correct answer is option A.
Scotch yoke mechanism is used to generate
sine functions
square roots
logarithms
inversions
✅ The correct answer is option A.