ISRO Technician-B Plumber Question Paper - 2019 (Set

ISRO Technician-B Plumber Question Paper - 2019 (Set - 1) with Answer Key

31) Bolts A and B are both M12 x 1. Bolt A is of 10.9 grade and Bolt B is of 12.9 grade. Which of the following statements is/are true?

Answer is:

None of the above

32) ISO Metric thread has an angle of

Answer is:

60 degree

33) A rivet is specified by the diameter of its

Answer is:

Shank

A rivet is specified by the diameter of its

34) Pitch diameter of an external thread is measured using

Answer is:

Screw thread micrometer

Explanation:

Screw thread micrometer is used to measure the effective diameter of the screw threads. This dimension is important, because the area of the thread flanks in the vicinity of the pitch line is where the greatest transmission of force occurs between mating threads.

Pitch diameter of an external thread is measured using

35) A bolt thread is specified as Ml2 x 1- 5g 6g. Here

Answer is:

31) Bolts A and B are both M12 x 1. Bolt A is of 10.9 grade and Bolt B is of 12.9 grade. Which of the following statements is/are true?

None of the above

32) ISO Metric thread has an angle of

60 degree

33) A rivet is specified by the diameter of its

Shank

34) Pitch diameter of an external thread is measured using

Screw thread micrometer

35) A bolt thread is specified as Ml2 x 1- 5g 6g. Here

5g denotes tolerance class for pitch diameter and 6g denotes tolerance class for major diameter