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Question 1

Water is usually carried in ___ tubing, if it is under high pressure, ___ tubing is usually used

Answer 1

Copper; stainless steel

Question 2

A flareless compression fitting is one that

Answer 2

Bites into the tubing

Question 3

Annealing is sometimes necessary to make tubing

Answer 3

Easier to bend

Question 4

When you use a cutter to cut tubing, the cutter should ____ and the tubing should ____

Answer 4

Rotate; not rotate

Question 5

To get the most accurate measurement of required tubing length, you must measure along the tube’s

Answer 5

Centerline

Question 6

Tensile strength of tubing is based on the ___ and the ____

Answer 6

Tubing material; wall thickness

Question 7

How does increasing the operating temperature affect the strength of tubing?

Answer 7

Decreases it

Question 8

What type of fitting is commonly used on tubing that carries a flammable liquid or gas?

Answer 8

Flared

Question 9

What is the first step in installing a flared fitting?

Answer 9

Slide the nut over the tube

Question 10

What is the most common cause of leaks in a tubing system?

Answer 10

Poor fitting connection

Question 11

What is the most frequently used hydraulic fluid?

Answer 11

Oil

Question 12

What device is commonly used to keep hydraulic systems from building up excess pressure?

Answer 12

Relief valve

Question 13

What type of fittings should be used with copper tubing in hydraulic systems?

Answer 13

Brass

Question 14

If the pump in a hydraulic system is noisy, the most likely cause is a(n)

Answer 14

Insufficient fluid supply

Question 15

Contaminated fluid in a hydraulic system often causes

Answer 15

Fluctuating pressure

Question 16

A typical multipurpose industral hose can carry saturated steam at pressures of up to

Answer 16

150psi

Question 17

A shaft that serves to support a fitting during assembly is called a

Answer 17

Mandrel

Question 18

The most common method of attaching reusable fittings to hose is

Answer 18

Threading

Question 19

Calculate the required hose length if a 40° bend is to be made in a hose and the radius of the bend is 8 in.

Answer 19

5.58in

Question 20

Hydrostatic tests of a hose system should be conducted at ___ percent of the recommended working pressure of the hose

Answer 20

150

Question 21

The most important dimension of a gasket, from a total performance standpoint, is its

Answer 21

Thickness

Question 22

The electrical signal generated by a profilometer is converted into a reading displayed in

Answer 22

RMS

Question 23

Waviness in flange surfaces is usually expressed in ___ of an inch

Answer 23

Thousandths

Question 24

Coatings serve to reinforce a joint seal and to keep the gasket from

Answer 24

Creeping

Question 25

TFE-based gasket strips can accommodate operating temperatures of up to

Answer 25

250°F