Pipe Cutting and Threading: Master the Techniques for Pipefitting Success

Question 1

For creating threads on pipes smaller than 1 inch in diameter, which type of threader is generally used?

Accepted Answer

Manual threader

Answer

Electric threader

Answer

Bench threader

Answer

Chain threader

Question 2

When connecting two threaded pipes, the type of joint formed is a:

Accepted Answer

Threaded joint

Answer

Soldered joint

Answer

Brazed joint

Answer

Compression joint

Question 3

The tool used to check the alignment of threads is known as a:

Accepted Answer

Thread gauge

Answer

Protractor

Answer

Level

Answer

Micrometer

Question 4

Which tool is specifically designed to create threads on the end of a pipe?

Accepted Answer

Pipe threader

Answer

Pipe cutter

Answer

Pipe reamer

Answer

Pipe wrench

Question 5

In plumbing applications, which pipe thread standard is commonly employed?

Accepted Answer

NPT

Answer

BSPT

Answer

UNF

Answer

IPS

Question 6

What is the primary function of cutting oil when threading a pipe manually?

Accepted Answer

Reducing friction and heat buildup

Answer

Preventing burr formation on the thread

Answer

Strengthening the thread

Answer

Cooling the pipe

Question 7

When selecting a pipe die, which measurement is critical to ensure a proper fit?

Accepted Answer

Pipe diameter

Answer

Pipe thickness

Answer

Thread pitch

Answer

Die length

Question 8

What is the purpose of using a reamer after cutting a pipe for threading?

Accepted Answer

De-burring and smoothing the cut edge

Answer

Enlarging the internal diameter

Answer

Cleaning the threads

Answer

Creating a beveled edge

Question 9

In potable water applications, which type of thread sealant is commonly used?

Accepted Answer

Teflon tape

Answer

Pipe dope

Answer

Anaerobic sealant

Answer

Silicone sealant

Question 10

Which tool is most appropriate for measuring the pitch of a thread?

Accepted Answer

Thread gauge

Answer

Calipers

Answer

Micrometer

Answer

Protractor

Question 11

Which of the following is not a type of pipe cutting tool?

Accepted Answer

Die stock

Answer

Wheel cutter

Answer

Chain cutter

Answer

Tubing cutter

Question 12

What is the purpose of a threading machine?

Accepted Answer

To create threads on pipes

Answer

To cut pipes

Answer

To bend pipes

Answer

To ream pipes

Question 13

What is the primary purpose of a pipe reamer?

Accepted Answer

To remove burrs and debris from cut pipe ends

Answer

To chamfer pipe ends

Answer

To clean and lubricate threads

Answer

To align pipes before welding

Question 14

For cutting small-diameter plastic pipes, which type of pipe cutter is most commonly employed?

Accepted Answer

Tube cutter

Answer

Hack saw

Answer

Ratchet cutter

Answer

Wheel cutter

Question 15

What is the primary reason for using a reamer after cutting a pipe?

Accepted Answer

To remove burrs and sharp edges

Answer

To adjust the pipe's diameter

Answer

To create a threaded end

Answer

To clean the pipe's surface

Question 16

To create 1/2-inch NPT threads, which die size should be utilized?

Accepted Answer

#12

Answer

#14

Answer

#10

Answer

#8

Question 17

For large-diameter pipes, which type of threading machine is most appropriate?

Accepted Answer

Hydraulic threading machine

Answer

Hand threading machine

Answer

Bench threading machine

Answer

Portable electric threading machine

Question 18

When threading galvanized pipes, which lubricant is recommended?

Accepted Answer

Cutting oil

Answer

WD-40

Answer

Grease

Answer

Water

Question 19

Which type of die is specifically designed for creating National Pipe Tapered (NPT) threads commonly used in plumbing?

Accepted Answer

Tapered die

Answer

Left-hand die

Answer

Straight die

Answer

Right-hand die

Question 20

Which factor primarily influences the diameter of the cut pipe?

Accepted Answer

The size of the pipe being cut

Answer

The material of the pipe

Answer

The cutting speed

Answer

The type of pipe cutter used

Question 21

What is the term used to describe a raised edge or protrusion left on the pipe after cutting?

Accepted Answer

Burr

Answer

Defect

Answer

Dent

Answer

Fitting

Question 22

For cutting PVC pipes, what is the recommended cutting speed range?

Accepted Answer

150-250 feet per minute

Answer

50-100 feet per minute

Answer

300-400 feet per minute

Answer

500-600 feet per minute

Question 23

When using a pipe cutter, which safety precaution is of utmost importance?

Accepted Answer

Always wear appropriate eye protection (safety glasses)

Answer

Cut the pipe in a crowded area

Answer

Hold the pipe with bare hands

Answer

Use a dull cutter for safety

Question 24

What is the primary purpose of a pipe vise in pipefitting and plumbing?

Accepted Answer

To securely hold the pipe in place during cutting and threading operations

Answer

To cut the pipe

Answer

To bend the pipe

Question 25

In plumbing applications, which type of pipe thread is specifically designed for gas applications?

Accepted Answer

National Pipe Taper (NPT)

Answer

Society of Automotive Engineers (SAE)

Answer

Metric

Answer

British Standard Pipe Taper (BSPT)