Machine Design MCQ with Answers

Machine Design MCQ with Answers

146) The major diameter of a screw thread is also known as core or root diameter.

Answer is:

No

147) The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)

Answer is:

2840 d

148) The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

Answer is:

ductility

Explanation:

Ductility is a property of a material enabling it to be drawn into wires.

The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

149) The helix angle for single helical gears ranges from

Answer is:

20 Degree to 35 Degree

150) In order to withstand resistance to wear, the best profile of gear is

Answer is:

14.5 Degree full depth involute tooth

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