106

Question 1

A liquid has a ______ shape and a _______ volume

Answer 1

Changeable; fixed

Question 2

Kilograms per cubic meter (kg/m^3 ) is the unit of metric measurement for

Answer 2

Density

Question 3

The temperature of a liquid decreases as it

Answer 3

Evaporates

Question 4

During laminar flow, the fluid in a pipe

Answer 4

Moves in parallel layers

Question 5

The solubilty of a gas in a liquid is usually _______ at the liquid’s boiling point.

Answer 5

Lowest

Question 6

Activated carbon is widely used for

Answer 6

Absorbing impurities

Question 7

At room temperature, carbon is chemically

Answer 7

Inert

Question 8

Excessive noise in electric hand tools often indicates

Answer 8

Carbon brush problems

Question 9

Nonporous carbon seals are used in applications where

Answer 9

Even a tiny leak would be harmful

Question 10

In shaft seals that have two individual packing rings, the joints should be positioned ______° apart

Answer 10

180

Question 11

Plastics that can be reheated and reshaped many times are called

Answer 11

Thermoplastics

Question 12

What method of molding produces intricate parts at high speed and low cost?

Answer 12

Injection molding

Question 13

In filament winding, glass fiber is wound around a form called a(n)

Answer 13

Mandrel

Question 14

When drilling most plastics, you should reduce the feed rate just before the drill point ____ the work

Answer 14

Penetrates the far side of

Question 15

When preparing an area of corroded surface to be patched, which side of the material should be cleaned?

Answer 15

Both sides

Question 16

If stretched to twice Its normal length and released, an elastomer will

Answer 16

Retum to Its orginal shape

Question 17

Class T rubber compounds resist damage from

Answer 17

Extreme temperature

Question 18

Most rubber compounds are

Answer 18

Flammable

Question 19

In vulcanization, the more sulfur that is added, the ______ the rubber becomes

Answer 19

Harder

Question 20

What characteristic is most important in the rubber coating of wire in extension cords?

Answer 20

Flexibility

Question 21

Cutting a log lengthwise through or near its centerine produces a ____ cut

Answer 21

Radial

Question 22

The actual length of a board is stated in ______ feet. Lumber is sold in _____ feet

Answer 22

Running, board

Question 23

The best veneer in softwood plywood is graded

Answer 23

N

Question 24

Wood with many knots should not be used for structural support because it is

Answer 24

Weak

Question 25

How deep should the pilot hole for a screw be drilled in softwood?

Answer 25

Half the screw length

Question 26

Air-eritrained concrete is commonly used for

Answer 26

Structres exposed to severe cold

Question 27

Cinder block is commonly used for construction

Answer 27

Above ground

Question 28

Type N mortar is a ______ -strength mortar used for ______ -bearing clay tile construction.

Answer 28

Medium; load

Question 29

Which type of plaster sets very quickly and should be used only for small patching jobs?

Answer 29

Plaster of Paris

Question 30

The correct size of the pane of glass for this window is W/ picture illustration

Answer 30

23 ^7/8 in x 26 ^7/8 in

Question 31

Convection heat is the

Answer 31

Transter of heat by fluids

Question 32

What type of insulation can withstand both high and low temperatures, is chemically inert and may be used in ovens and freezers?

Answer 32

Mineral wool

Question 33

You can use lead sheet or plastic film for

Answer 33

Reducing vibration of pipes or ducts

Question 34

An asphalt coating serves as a(n) ______ on the outside of underground walls

Answer 34

Moisture barrier

Question 35

Which of the following materials has the highest dielectric strength?

Answer 35

Mica

Question 36

The part of a paint that binds solid particles into a uniform film is called the

Answer 36

Vehicle

Question 37

The single most important factor for success in painting a structure is

Answer 37

Surtace preparation

Question 38

In sandblasting, the intensity that produces the best anchor pattern for paint is called _____ blasting

Answer 38

White

Question 39

The color specified by ANSI to Indicate first-aid stations and safety equipment in a plant is

Answer 39

Green

Question 40

The process of melting zing with an oxyacetylene flame and spraying it onto a metal surface for protection is called

Answer 40

Metalizing

Question 41

Which pH value below indicates an acid solution?

Answer 41

5

Question 42

The solvent, ______ should not be used for cleaning because it is highly fammable and irritates the skin.

Answer 42

Gasoline

Question 43

You should use _____ acid to dissolve hard water deposits in heating and cooling systems.

Answer 43

Sulfamic

Question 44

Chemicals used to prevent the formation of scale in piping systems and boilers are called:

Answer 44

Sequestrants

Question 45

Fires involving electrical equipment and wiring are designated

Answer 45

Class C

Question 46

The completion of all chemical and physical reactions that affect adhesive bonding is called

Answer 46

Curing

Question 47

An adhesive made of water-soluble gums and starches is called

Answer 47

Mucilage

Question 48

The strongest adhesive joint is the _____ joint

Answer 48

Bevel lap

Question 49

Good electrical insulation is provided by ______ tape

Answer 49

Rubber

Question 50

Tapes coated with fluorocarbon adhesives are used where service conditions include

Answer 50

High temperatures