reversible
non-reversible
ideal
✅ The correct answer is option A.
Mechanical Engineering MCQs
In natural uranium, the constituents of three naturally occuring isotopes are
U234 = 0.006%, U235 = 0.712% and U238 = 99.282%
U234 = 0.712%, U235 = 0.006% and U238 = 99.282%
U234 = 99.282%, U235 = 0.006% and U238 = 0.712%
U234 = 0.006%, U235 =
✅ The correct answer is option A.
A thin cylindrical shell of diameter (d), length (l) and thickness (t)is subjected to an internal pressure (p). The hoop stress in the shell is
pd/t
pd/2t
pd/4t
pd/6t
✅ The correct answer is option B.
Under logarithmic decrement, the amplitude of successive vibrations are
constant
in arithmetic progression
in geometric progression
in logarithmic progres
✅ The correct answer is option C.
The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.
Yes
No
✅ The correct answer is option A.
In case of pressure vessels having open ends, the fluid pressure induces
longitudinal stress
circumferential stress
shear stress
none of these
✅ The correct answer is option B.
Which of the following is an example of sliding pair?
Piston and cylinder of a reciprocating steam engine
Shaft with collars at both ends fitted into a circular hole
Lead screw of a lathe with nut
Ball and a socket join
✅ The correct answer is option A.
A cantilever beam is one which is
fixed at both ends
fixed at one end and free at the other end
supported at its ends
supported on more than
✅ The correct answer is option B.
A twist drill is specified by its
shank, material and diameter
shank, lip angle and size of flute
material, length of body and helix angle
any one of these
✅ The correct answer is option A.
The shear force at apoint on a beam is the algebraic __________ of all the forces on either side of the point.
sum
difference
✅ The correct answer is option A.