UTB6 Plumbing Fixtures

Question 1

What are often called “driving equipment” because they are the primary source of mechanical energy or power? (Page 6-1)

Answer 1

Prime movers

Question 2

Electric motors are fitted with what which reduce friction? (Page 6-3)

Answer 2

Bearings

Question 3

Two fairly common types of drives used with electric motors are the flexible coupling and the what? (Page 6-4)

Answer 3

Belt drive

Question 4

What is a machine that produces mechanical energy by burning fuel in a confined space (the engine cylinder)? (Page 6-5)

Answer 4

Internal combustion engine

Question 5

The gasoline engine changes heat energy into what form of energy? (Page 6-7)

Answer 5

Mechanical

Question 6

Most gasoline engines operate on what cycle? (Page 6-7)

Answer 6

Four-stroke

Question 7

What are used to move any substance that flows or can be made to flow? (Page 6-9)

Answer 7

Pumps

Question 8

The addition of energy to a liquid by a pump usually results in an increase in pressure, which is generally referred to as what? (Page 6- 9)

Answer 8

Head

Question 9

Every pump is equipped with devices for controlling the direction of flow, the volume of flow, and the operating pressure of the pump. A device that performs one or more of these control functions is called a what? (Page 6-10)

Answer 9

Valve

Question 10

A valve that permits liquid flow in only one direction is classified as a what? (Page 6-10)

Answer 10

Check valve

Question 11

What valves are designed to open when the liquid pressure in the pump becomes dangerously high? (Page 6-11)

Answer 11

Relief

Question 12

The five broad categories of pumps are rotary, reciprocating, centrifugal, air lift, and what else? (Page 6-11)

Answer 12

Jet pumps

Question 13

What type of pump moves water or other liquid by means of a plunger or piston that reciprocates (travels back and forth) inside a cylinder? (Page 6-12)

Answer 13

Reciprocating

Question 14

The reciprocating pumps used by the Navy are usually one of the following types-direct-acting, simplex, double-acting, or vertical. The types most often used are what type of pumps? (Page 6-13)

Answer 14

Direct acting

Question 15

When a body, or a liquid, is made to revolve or whirl around a point, a force is created that impels the body or fluid to move outward from the center of rotation. What is this phenomenon called? (Page 6-16)

Answer 15

Centrifugal Force

Question 16

When a centrifugal pump is being used with a suction lift of no more than how many feet is required, a pump with an automatic primer or a suction line equipped with a foot valve may be used? (Page 6-17)

Answer 16

15

Question 17

In domestic water supply systems, the centrifugal pump is used in shallow wells (suction lift not over how many feet)? (Page 6-17)

Answer 17

22

Question 18

Fire pumps usually are the centrifugal type, either single or multistage. Electricity, steam, or gasoline may drive them. Whatever the power supply, it must be permanent and, if steam, must have a constant minimum pressure of how many pounds of steam? (Page 6- 17)

Answer 18

50

Question 19

What occurs when the velocity of a liquid increases to the point where the consequent pressure drop reaches the pressure of vaporization of the liquid? (Page 6-19)

Answer 19

Cavitation

Question 20

What is a general term that refers to many different types of materials used to seal moving machinery joints (sliding pistons and piston rods, rotating shafts and valve stems, etc.) against leakage of steam or liquids? (Page 6-20)

Answer 20

Packing

Question 21

Packing usually takes the form of coils, rings, or what else? (Page 6-21)

Answer 21

Spirals

Question 22

Most water service pumps use what material for the seal faces? (Page 6-22)

Answer 22

Carbon

Question 23

Mechanical seals should be replaced whenever the seal is removed for any reason or whenever the leakage rate exceeds how many drops per minute? (Page 6-22)

Answer 23

5

Question 24

Pumps that use the rapid flow of a fluid to entrain another fluid and thereby move it from one place to another are what type? (Page 6-28)

Answer 24

Jet pumps

Question 25

Standard pumps are normally packed before shipment. If the pump is installed within how many days after shipment, the packing should be in good condition with a sufficient supply of lubrication? (Page 6-33)

Answer 25

60

Question 26

The maximum desirable operating temperature for bearings is what? (Page 6-35)

Answer 26

180° F

Question 27

Grease-lubricated bearings should not be used where temperature of the pumped liquid exceeds what? (Page 6-35)

Answer 27

350°F

Question 28

Packing should be checked frequently and replaced as service indicates. How many months might be a reasonable expected life, depending on operating conditions? (Page 6-37)

Answer 28

Six

Question 29

A mechanical seal that has been used should not be placed back into service until the sealing faces have been replaced or relapped. (Relapping is generally economical only in seals that are how many inches and greater in size?) (Page 6-37)

Answer 29

2

Question 30

What are placed between the stages or cylinders of multistage compressors cooling the compressed air charge before it is drawn into the next cylinder? (Page 6-47)

Answer 30

Intercoolers

Question 31

Compressed air usually falls into one of three categories-power service, process service, or what else? (Page 6-49)

Answer 31

Control purposes

Question 32

What is when compressed air either moves something or exerts a force? (Page 6-49)

Answer 32

Power service

Question 33

What is when compressed air is used to govern and/or regulate various equipment by monitoring pressure or flow rates of some substance? (Page 6-49)

Answer 33

Control purpose

Question 34

Medium-pressure compressed air systems deliver air from 126 to what psig? (Page 6-49)

Answer 34

399

Question 35

High-pressure compressed air systems range from 400 to what psig? (Page 6-49)

Answer 35

6,000

Question 36

What are provided on compressor intakes to prevent atmospheric dust from entering the compressor and causing scoring and excessive wear? (Page 6-50)

Answer 36

Air filters

Question 37

What remove moisture from compressed air that would condense in air lines, air tools, and pneumatic instruments? (Page 6-51)

Answer 37

Dryers

Question 38

Immediately secure a compressor when the temperature of the air discharge from any stage rises unduly or exceeds what? (Page 6-53)

Answer 38

400°F

Question 39

What two types of urinals are most commonly used by the Seabees?

Answer 39

Floor- and wall-mounted

Question 40

When thawing frozen water pipes or heating pipes inside buildings, which method is preferred?

Answer 40

Hot water

Question 41

What is the most common reason a threaded pipe joint will leak?

Answer 41

Fractured pipe

Question 42

The mechanisms used to transport body wastes into a sanitary sewer system are known as what type of fixtures?

Answer 42

Plumbing

Question 43

Liquid waste is discharged through which piece of equipment?

Answer 43

Orifice

Question 44

What type of hold-down bolts are used in the installation of water closets?

Answer 44

Brass

Question 45

How is a wall-mounted water closet attached to a wall?

Answer 45

Chair carrier

Question 46

Which piece of equipment associated with water closets carries the weight of the entire closet independent of the walls?

Answer 46

Hold-down flange

Question 47

What item is not required to be installed on a water closet if a flush valve is used?

Answer 47

Tank

Question 48

Which application is best suited for flush valve usage?

Answer 48

Commercial

Question 49

What item is installed on the supply line of a float valve in a water closet tank if the outlet is below the flood level rim?

Answer 49

Back flow preventer

Question 50

What shuts off the flushing water during a flushing cycle?

Answer 50

Water pressure passing through the upper chamber

Question 51

The lip of the wall mounted urinal is how many inches from the floor?

Answer 51

20-25"

Question 52

What is the minimum diameter, in inches, of a drain used for wall-hung urinals?

Answer 52

2

Question 53

Along with the kitchen sink, which other sink is most commonly installed?

Answer 53

Slop sink

Question 54

As a rule of thumb, the distance between the top of the drain board of a kitchen sink and the finished floor should not be less than how many inches?

Answer 54

36"

Question 55

A service sink is also known as what?

Answer 55

Slop

Question 56

What type of faucet is used where outside hose connections are needed?

Answer 56

Hose bib

Question 57

What is the main feature of a combination faucet?

Answer 57

Capability of the water to be tempered

Question 58

When you are facing the tub and the drain is on the right end, what type of tub is it?

Answer 58

Right handed

Question 59

What piece of equipment allows water flow from the shower head when the faucet is turned on?

Answer 59

Diverter

Question 60

When installing a bathtub/shower combination plumbing fixture, where should you place the bathtub spout ?

Answer 60

2 to 4 inches above rim of tub

Question 61

Thermostatic mixing valves are only used in which plumbing fixture?

Answer 61

Showers only

Question 62

How many types of shower heads are generally used when installing a shower?

Answer 62

2

Question 63

Which shower head has a restricted nozzle?

Answer 63

Economy

Question 64

The sides of the pan that are against the shower walls must be how many inches above the height of the finished dam or threshold?

Answer 64

3

Question 65

True or False) The shower head should be a minimum of 68 inches above the level of the drain on the shower pan.

Answer 65

TRUE

Question 66

How many inches above the floor should the orifice of a drinking fountain be located?

Answer 66

30 to 40

Question 67

Floor drains used in connection with a sanitary sewer must contain what piece of equipment?

Answer 67

Water seal

Question 68

A floor drain that is 2 inches is rated at how many drainage fixture units?

Answer 68

2

Question 69

Where is the combustion chamber in a water heater located?

Answer 69

Lower section

Question 70

Where are the cold and warm water inlets located on a water heater?

Answer 70

Top of the tank

Question 71

On a gas water heater, at what temperature, in degrees, does the relief valve open?

Answer 71

210° F

Question 72

Wooden plugs can also be used temporarily to plug the ends of a pipe up to how many inches in diameter?

Answer 72

8"

Question 73

What is the first step before starting to thaw a frozen pipe?

Answer 73

Open all faucets affected by the freeze.

Question 74

Where is the heat applied to commence thawing operations?

Answer 74

Lowest open end

Question 75

Which thawing application is the quickest and cheapest?

Answer 75

Electrical

Question 76

Steam thawing is used dependent upon what condition?

Answer 76

Type of insulating material inside piping.

Question 77

What can cause low water pressure and flow in piping?

Answer 77

Liming

Question 78

What type of valve will correct the problem of shower pressure dropping when other fixture outlets are opened?

Answer 78

Automatic mixing valve

Question 79

Fractures often occur at which location of a pipe?

Answer 79

End

Question 80

What is installed after a section of copper piping is replaced for a leak?

Answer 80

Compression type joint

Question 81

What is the first step when making a temporary repair on a pipe using a rubber hose?

Answer 81

Turn off water supply

Question 82

Moisture on the floor at the base of a water closet indicates the failure of what part?

Answer 82

Seal gasket

Question 83

What opens the inlet valve on a water closet flushing cycle?

Answer 83

Movement of float arm

Question 84

What assembly is the likely cause for water to continue to run in a water closet even after the flushing cycle is completed?

Answer 84

Flush tank/ inlet valve

Question 85

What causes the diaphragm to remain seated on the seat?

Answer 85

Upper and lower chambers contain the same amount of pressure.

Question 86

How is the piston type flushometer opened?

Answer 86

Lever which discharges water from dashpot chamber is engaged.

Question 87

(True or False) When pipelines in a new installation are not thoroughly flushed before placed in operation, the pipe dope or dirt contained in them can stop up the discharge valve.

Answer 87

TRUE

Question 88

What is the most common cause of a dripping faucet?

Answer 88

Stem washer is worn down.

Question 89

When flushing a sewer line with a fire hose, what size fire hose is preferred for use?

Answer 89

2-1/2"

Question 90

Sewer cleaning machines are designed for use in pipelines up to how many feet in length?

Answer 90

200

Question 91

Which chemical is added to a sewer pipeline in the attempt to remove tree roots?

Answer 91

Copper sulfate (Blue vitriol)

Question 92

What type of material needs to encase a sewer line that passes under roadways?

Answer 92

Concrete

Question 93

(True or False) Excavations over 5 feet must be shored and ladders provided.

Answer 93

TRUE

Question 94

Which tool is commonly used for clearing stoppages in service sinks?

Answer 94

Force cup

Question 95

Trap and drain augers are also known as what?

Answer 95

Sink snake

Question 96

What type of snake is used to clear floor drains?

Answer 96

Spring snake

Question 97

Which chemical is used to burn out stoppages?

Answer 97

Potassium hydroxide

Question 98

Which chemical is used to clear stoppages in kitchen sinks?

Answer 98

Hydrochloric acid

Question 99

What piece of equipment is not required for an electric heater?

Answer 99

Flue

Question 100

What is the diameter, in inches, of the cold water inlet for an electric inlet?

Answer 100

3/4"

Question 101

The temperature and pressure relief on an electric heater is set to lift at what pressure, in psi?

Answer 101

125 psi

Question 102

All gas water heaters are tested to operate at what pressure, in psi?

Answer 102

300

Question 103

By what means is the pilot light adjusted on a gas water heater?

Answer 103

Air shutter

Question 104

What type of fittings is used when installing copper water lines?

Answer 104

Dielectric

Question 105

CPVC piping can withstand temperatures up to how many degrees?

Answer 105

180

Question 106

What is the minimum diameter, in inches, of steel piping used for a gas line?

Answer 106

1/2"

Question 107

What is the minimum size drain, in inches, used for a lavatory installation?

Answer 107

1-1/4"

Question 108

How many types of joints are associated with flexible supply lines for lavatories?

Answer 108

3

Question 109

Where on a water closet is the trap located when the water closet uses a reverse trap flushing action?

Answer 109

Rear

Question 110

(True or False) Water closets equipped with a tank require a 3/4-inch waterline.

Answer 110

False1/2"

Question 111

What is the required waterline size, in inches, for a water closet equipped with a flushometer?

Answer 111

1"

Question 112

Which is NOT a type of urinal?A. GangB. Wall-hungC. StallD. Trough

Answer 112

A. Gang

Question 113

How many different designs are associated with the wall-hung type urinal?

Answer 113

3

Question 114

By what means is the pedestal urinal sealed to the floor flange?

Answer 114

Wax ring

Question 115

What type of trap is installed on siphon jet urinals?

Answer 115

Integral

Question 116

What is the minimum diameter, in inches, of a drain used for wall-hung urinals?

Answer 116

2"

Question 117

What component prevents contaminated water from being siphoned into the potable water supply through the flushometer?

Answer 117

Vacuum breaker

Question 118

What is the average time, in seconds, of a flush cycle?

Answer 118

7 - 10

Question 119

The sides of the pan that are against the shower walls must be how many inches above the height of the finished dam or threshold?

Answer 119

3