pressure increases while velocity decreases
pressure decreases while velocity increases
pressure and velocity both decreases
pressure and velocity
✅ The correct answer is option C.
Mechanical Engineering MCQs
The most effective method of controlling S.I. engine exhaust emission is by
recirculating exhaust
using catalytic converter
using some additives in the fuel
none of these
✅ The correct answer is option B.
Two solid shafts ‘A’ and ‘B’ are made of the same material. The shaft ‘A’ is of 50 mm diameter and shaft ‘B’ is of 100 mm diameter. The strength of shaft ‘B’ is __________ as that of shaft A.
one-half
double
four times
eight times
✅ The correct answer is option D.
The lower layer of the beam as shown in the below figure, will be
in tension
in compression
neither in tension nor in compression
✅ The correct answer is option A.
The transfer of heat by molecular collision is known as
conduction
convection
radiation
none of these
✅ The correct answer is option A.
The Young’s modulus of a material is 125 GPa and Poissons ratio is 0.25. The modulus of rigidity of me material is
30 GPa
50 GPa
80 GPa
100 GPa
✅ The correct answer is option B.
Crowning on pulley helps
in decreasing the slip of the belt
in increasing the slip of the belt
to keep the belt in centre on a pulley while it is in motion
to increase pulley lif
✅ The correct answer is option C.
The measurement of a thermodynamic property known as temperature is based on
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
none of these
✅ The correct answer is option A.
The humidification process, on the psychrometric chart is shown by
horizontal line
vertical line
inclined line
curved line
✅ The correct answer is option B.
The force present in a moving liquid is
inertia force
viscous force
gravity force
all of these
✅ The correct answer is option D.