Theory of Machines MCQ with Answers

121) A self locking screw has

Answer is:

coefficient of friction > tangent of load angle

122) The designation M 33 x 2 of a bolt means

Answer is:

metric threads of 33 mm outside diameter and 2 mm pitch

Explanation:

In the designation of bolts, 'M' stands for "metric" and number 33 is nominal diameter or major diameter of the bolt in millimetres and 2 is the pitch of the threads in millimetres.

123) Machine screws are

Answer is:

slotted for a screw driver and generally used with a nut

124) Rivets are generally specified by

Answer is:

nominal diameter

125) The edges of a boiler plate are bevelled to an angle of

Answer is:

121) A self locking screw has

coefficient of friction > tangent of load angle

122) The designation M 33 x 2 of a bolt means

metric threads of 33 mm outside diameter and 2 mm pitch

123) Machine screws are

slotted for a screw driver and generally used with a nut

124) Rivets are generally specified by

nominal diameter

125) The edges of a boiler plate are bevelled to an angle of

80°