81. The expansion joint is mostly used for pipes which carry steam at __________ pressures.
low
high
✅ The correct answer is option B.
Machine Design MCQs
82. A shaft is designed on the basis of rigidity and stiffness.
Correct
Incorrect
✅ The correct answer is option A.
83. The resultant axial load on a bolt depends upon
external load applied
initial tension due to tightening of the bolt
relative elastic yielding of the bolt and the connected members
all of the above
✅ The correct answer is option D.
84. 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.
85. The cold working of metals is carried out __________ the recrystallisation temperature.
above
below
✅ The correct answer is option B.
86. 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.
87. The rivet head used for boiler plate riveting is usually
snap head
pan head
counter sunk head
conical head
✅ The correct answer is option A.
89. A machine part subjected to __________ is called a strut.
an axial tensile force
an axial compressive force
a tangential force
any one of these
✅ The correct answer is option B.
90. An universal coupling is a type of __________ coupling.
rigid
flexible
✅ The correct answer is option B.