Copper Tube and Fittings Exam

The process of joining tubes and fittings by heating the materials and melting a filler metal into the joint to seal the tubes together is called

• soldering

• brazing

• rolling

• grooving

A 1-inch nominal type L copper tube has an outside diameter of

• 7/8"

• 1"

• 1-1/8"

• 1-1/4"

A 3/4-inch copper tube has an outside diameter of 3/4 inch. The tube is most likely type

• K

• M

• ACR

• DWV

The information printed on the outside of copper tubing does not include the

• tube type

• joining method

• manufacturer name

• country of origin

The part of the hanger that touches or connects directly to the tube is called the

• connector

• structural attachment

• vibration isolator

• tube attachment

To insert a channel,

• twist it into position along the slotted side

• slide it into position on the flat side

• bend it into position along the slotted side

• slide it sideways until it touches the adjacent channel

To reduce turbulence, the space between the fittings of a 2-inch diameter tube should be at least

• 10"

• 20"

• 30"

• 40"

A plumber is installing a valve on a water supply line that will frequently remain completely open. The best type of valve to install is a

• check valve

• ball valve

• gate valve

• globe valve

Mechanically formed tee connections increase productivity because they require the creation of only

• one brazed joint

• one soldered joint

• two brazed joints

• three soldered joints

In the figure above, the line between Points A and B indicates a(n)

• end-to-face measurement

• center-to-end measurement

• face-to-back measurement

• center-to-face measurement