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Plumber Set-1
Fitting - 3. Pipe Thread and Fittings
1

Fitting - 3. Pipe Thread and Fittings MCQ with Answers

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

Answer is:

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

Explanation:

.

Fitting - 3. Pipe Thread and Fittings MCQ with Answers

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Related Fitting - 3. Pipe Thread and Fittings MCQ with Answers

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)

Answer is:

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

Answer is:

Cap

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

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

Nipple

Coupling

Union

Reduce

Answer is:

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

Answer is:

Asbestos fibre, Portlan cement and silica

Fitting - 3. Pipe Thread and Fittings MCQ with Answers

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