✅ The correct answer is option B.
Mechanical Engineering MCQs
In an internal mouthpiece, if the jet after contraction expands and fills up the whole mouthpiece, then the mouthpiece is said to be running free.
TRUE
FALSE
✅ The correct answer is option B.
The space between the two walls of a thermos flask is evacuated because vacuum is a __________ conductor of heat.
good
bad
✅ The correct answer is option B.
The Thomson’s turbine is __________ reaction turbine.
an axial flow
an inward flow
an outward flow
a mixed flow
✅ The correct answer is option B.
The gear shift lever requires two separate motions to shift gears, and the first movement
moves the synchronizer
selects the synchronizer
meshes the gears
operates the clutch
✅ The correct answer is option B.
In a forced feed lubrication system, the device used to guard against excessive oil pressure, is known as
release chamber
balancer
relief valve
stop valve
✅ The correct answer is option C.
The shear force diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, consists of
one right angled triangle
two right angled triangles
one equilateral triangle
two equilateral triang
✅ The correct answer is option B.
In case of turning, as the machining proceeds, the spindle speed must __________ with the decrease in diameter of work.
decrease
increase
✅ The correct answer is option B.
For general industrial machinery, the ratio of the length of journal to its diameter is taken as
0.5 to 1
1 to2
3 to 5
5 to 10
✅ The correct answer is option B.
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.
equal to
less than
greater than
✅ The correct answer is option B.