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Plumber
FITTING 3 PIPE THREAD AND FITTINGS
Set 1
Set 1
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Q10493
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What is the formula used to calculate blank size of round rod before cutting external thread?
A
Blank size=Thread size -0.1% pitch of the thread
B
Blank size=Thread size +0.1% pitch of the thread
C
Blank size=Thread size -0.01% pitch of the thread
D
Blank size=Thread size +0.01% pitch of the thread
Q10494
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What is the formula to calculate tap drill size?
A
Minor dia = major dia + (2 x depth)
B
Minor dia = major dia - (2 x depth)
C
Minor dia = major dia + (2 + depth)
D
Minor dia = major dia + (2 - depth)
Q10495
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What is used to close the pipe line that has an external thread?
A
Plug
B
Cap
C
Coupling
D
Reducer
Q10496
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Which type of fitting is used for easy to dismantle and repair?
A
Nipple
B
Coupling
C
Union
D
Reduce
Q10497
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What material is used to manufacture AC pipes ?
A
Asbestos fibre, clay, lime
B
Asbestos fibre, Portlan cement and silica
C
Asbestos fibre, lime and cement
D
Asbestos fibre, silica and lime
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