FITTING 3 PIPE THREAD AND FITTINGS - Practice Mode

1) What is the formula used to calculate blank size of round rod before cutting external thread?

Blank size=Thread size -0.1% pitch of the thread Blank size=Thread size +0.1% pitch of the thread Blank size=Thread size -0.01% pitch of the thread Blank size=Thread size +0.01% pitch of the thread

Correct Answer: Blank size=Thread size -0.1% pitch of the thread

2) What is the formula to calculate tap drill size?

Minor dia = major dia + (2 x depth) Minor dia = major dia - (2 x depth) Minor dia = major dia + (2 + depth) Minor dia = major dia + (2 - depth)

Correct Answer: Minor dia = major dia - (2 x depth)

3) What is used to close the pipe line that has an external thread?

Plug Cap Coupling Reducer

Correct Answer: Plug

4) Which type of fitting is used for easy to dismantle and repair?

Nipple Coupling Union Reduce

Correct Answer: Union

5) What material is used to manufacture AC pipes ?

Asbestos fibre, clay, lime Asbestos fibre, Portlan cement and silica Asbestos fibre, lime and cement Asbestos fibre, silica and lime

Correct Answer: Asbestos fibre, Portlan cement and silica

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