air only
petrol only
a mixture of petrol and air
✅ The correct answer is option C.
Mechanical Engineering MCQs
The Wahl’s stress factor (K) for springs is given by (where )
✅ The correct answer is option D.
Internal or external threads of different pitches can be produced by
pantograph milling machine
profiling machine
planetary milling machine
piano-miller
✅ The correct answer is option C.
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)
K.ρ
K/ρ
ρ/K
K.ρ
✅ The correct answer is option B.
A lap joint is always in __________ shear.
single
double
✅ The correct answer is option A.
The equation of free vibrations of a system is , Its natural frequency is
3 Hz
3π Hz
6 Hz
6π Hz
✅ The correct answer is option A.
Volumetric efficiency of a compressor decreases with __________ in compression ratio.
decrease
increase
✅ The correct answer is option B.
In a flange coupling, the bolts are subjected to
tensile stress
compressive stress
shear stress
none of these
✅ The correct answer is option C.
One kg of carbon produces __________ kg of carbon dioxide.
3-Jul
7-Mar
11-Mar
3-Nov
✅ The correct answer is option C.
The delay period in compression ignition engines depends upon
temperature and pressure in the cylinder at the time of injection
nature of the fuel mixture strength
relative velocity between the fuel injection and air turbulence pressure of residual gases
all of the above
✅ The correct answer is option D.