block B pvc review

Question 1

What color of solvent cement would be used to join PVC pipe?

Select one:

a.
Clear

b.
White

c.
Yellow

d.
Grey

Answer 1

The correct answer is: Grey

Question 2

What connection method would be used to join underground high-density polyethylene pipe (HDPE)? .

Select one:

a.
Solvent cement

b.
Heat fusion

c.
Crimp rings

d.
Mechanical joints

Answer 2

The correct answer is: Heat fusion

Question 3

What is the name given to plastic that becomes soft when heated and hard when cooled?

Select one:

a.
Thermoplastic

b.
Proxylene

c.
High density

d.
Thermoset

Answer 3

The correct answer is: Thermoplastic

Question 4

Which of the following plastics would ·be classified as a thermoset?

Select one:

a.
FRP

b.
PVC

c.
ABS

d.
CPVC

Answer 4

A

Question 5

Which of the following plastics has the highest expansion rate?

Select one:

a.
CPVC

b.
PVC

c.
PEX

d.
ABS

Answer 5

C

Question 6

What is the maximum operating temperature of ABS piping?

Select one:

a.
140 °F

b.
100 °F

c.
180 °F

d.
220 °F

Answer 6

C

Question 7

What is the standard length of 4 inch plastic DWV piping?

Select one:

a.
10 feet

b.
20 feet

c.
14 feet

d.
12 feet

Answer 7

The correct answer is: 12 feet

Question 8

Identify the minimum thickness of plastic piping that may be joined by threading?

Select one:

a.
Schedule 40

b.
Schedule 80

c.
Schedule 20

d.
Schedule 160

Answer 8

B

Question 8

What color is used for CVPC piping designed for fire suppression applications?

Select one:

a.
Black

b.
Purple

c.
Orange

d.
Red

Answer 8

C

Question 9

Which of the following plastics require a primer prior to solvent welding?

Select one:

a.
PVDF

b.
ABS

c.
PEX

d.
PVC

Answer 9

D

Question 10

Cast iron soil pipe is made from:

Select one:

a.
grey cast iron

b.
silicon iron

c.
Duriron

d.
white cast iron

Answer 10

A

Question 11

Which of the following items was used specifically for horizontal lead and oakum joints ?

Select one:

a.
Ladle

b.
Running rope

c.
Yarning iron

d.
Caulking iron

Answer 11

The correct answer is: Running rope

Question 12

What material may be used to join bell and spigot cast iron soil pipe?

Select one:

a.
Potassium Permanganate

b.
Philplug cold caulking compound cord

c.
Silicon caulking

d.
Epoxy cement

Answer 12

The correct answer is: Philplug cold caulking compound cord

Question 13

Mechanical joints used for glass piping are typically lined with:

Select one:

a.
Teflon

b.
Asbestos

c.
Nitrile

d.
Toluene

Answer 13

The correct answer is: Teflon

Question 14

What type of ends will be found on a 90° glass elbow?

Select one:

a.
Bell

b.
Beaded

c.
Plainend

d.
Threaded

Answer 14

The correct answer is: Beaded

Question 15

Which of the following chemicals should not be used with glass piping?

Select one:

a.
Bromine

b.
Hydrochloric Acid

c.
Hydrogen Peroxide

d.
Alkaline Solution

Feedback

Answer 15

The correct answer is: Alkaline Solution

Question 16

Which of the following is not permitted to be installed in a drainage system underground/under a building?

Select one:

a.
Red Brass Pipe

b.
Vitrified Clay Pipe

c.
Welded and Seamless Steel Galvanized Pipe

d.
Cellular Core PVC Pipe

Answer 16

able A 2.2.5.

The correct answer is: Welded and Seamless Steel Galvanized Pipe

Question 17

What is the most common method of joining asbestos-cement DWV piping?

Select one:

a.
Threading

b.
0-rings

c.
Wiped lead

d.
Solvent cement

Answer 17

The correct answer is: 0-rings

Question 18

Which of the following would not be suitable for an underground drainage system?

Select one:

a.
Welded and Seamless Galvanized Steel Pipe

b.
ABS Schedule 40

c.
Vitrified Clay Pipe

d.
Concrete Pipe

Answer 18

The correct answer is: Welded and Seamless Galvanized Steel Pipe

Question 19

A pipe measurement is 18 1/2 inches C-C of elbows. If the thread engagements is 5/16 inch and the F-C measurement (throw) is 5/8 in., what length of pipe must be cut?

Select one:

a.
18 1/2 inch

b.
17 7/8 inch

c.
17 1/4 inch

d.
17 9/16 inch

Answer 19

The correct answer is: 17 7/8 inch

Question 20

We are to make an offset using two 22 1/2 degree elbows and the horizontal offset is 14 inches, what will be the center to center measurement between the two 22 degree elbows?

Select one:

a.
15 5/16 inches

b.
15 15/16 inches

c.
15 3/16 inches

d.
15 5/8 inches

Answer 20

The correct answer is: 15 3/16 inches

Question 21

The C-C length of the angled pipe with 45 degree fittings is:

Answer 21

548mm

Question 22

From the accompanying diagram, find the measurement for “x” and “y” if they are equal in length, 45 degree fittings are used and the offset 1 ft., 10 inches:
Select one:

a.
2 feet, 7 inch

b.
8 feet, 8 inch

c.
1 feet, 10 inch

d.
4 feet, 4 inch

Answer 22

The correct answer is: 4 feet, 4 inch

Question 23

If a 12 foot offset is created using 45 degree elbows instead of 90 degree elbows, how much pipe will be saved?

Select one:

a.
5 feet 6 inch

b.
7 feet 0 inch

c.
4 feet 0 inch

d.
3 feet 6 inch

Answer 23

The correct answer is: 7 feet 0 inch

Question 24

Calculate the end-to-end measurement of pipe ‘T’, if the center-to-face measurement of a 45 degree fitting is 1 1/8 of an inch and the thread engagement is 11/16 of an inch:Select one:

a.
31 feet, 7/16 inch

b.
31 feet, 11/16 inch

c.
31 feet, 15/16 inch

d.
31 feet, 3/16 inch

Answer 24

The correct answer is: 31 feet, 7/16 inch

Question 25

A standard pipe thread is cut at an-angle of ________ degrees.

Select one:

a.
11 1/2

b.
60

c.
72

d.
30

Answer 25

The correct answer is: 60

Question 26

The purpose of the square hole in the reamer blade of a tubing pipe cutter is:

Select one:

a.
a hand-hold for gripping the reamer

b.
to tighten the set screw on a hacksaw

c.
to open or close a “B”-tank valve

d.
to adjust the regulator pressure

Answer 26

The correct answer is: to open or close a “B”-tank valve

Question 27

The wheels on the chain of a cast iron snap cutter:

Select one:

a.
are thinner than those on a steel pipe cutter

b.
are pressure points to break the cast iron pipe

c.
are diamond-tipped for long life

d.
are meant to roll around the pipe to cut it

Answer 27

The correct answer is: are pressure points to break the cast iron pipe

Question 28

What is the correct sequence when preparing a flared connection on copper tubing ?

Select one:

a.
Flare, ream, flare nut, cut

b.
Flare nut, cut, flame, ream

c.
Cut, ream, flare, flare nut

d.
Cut, flare nut, ream, flare

Answer 28

The correct answer is: Cut, flare nut, ream, flare

Question 29

What is the next step when you cut copper tubing ?

Select one:

a.
Ream

b.
Sand

c.
Flare

d.
Polish

Answer 29

The correct answer is: Ream

Question 30

Which tool would be used to cut 2 inch or smaller diameter carbon steel pipe?

Select one:

a.
Pipe cutters

b.
Hacksaw

c.
Reciprocating saw

d.
Tubing cutters

Answer 30

The correct answer is: Pipe cutters

Question 31

How do you bend Type L hard temper copper tubing?

Select one:

a.
Anneal, cool slowly, then bend

b.
Bend, heat, then cool slowly

c.
Bend, anneal, cool quickly

d.
Heat, cool quickly, then bend

Answer 31

The correct answer is: Anneal, cool slowly, then bend

Question 32

What is used to join duriron pipe?

Select one:

a.
Threaded joints

b.
Welded joints

c.
Mechanical joints

d.
Brazed joints

Answer 32

The correct answer is: Mechanical joints

Question 33

What are the typical concerns when making an expansion loop in copper?

Select one:

a.
Narrowing the throat

b.
Too small

c.
Kinking

d.
Too big

Answer 33

The correct answer is: Too small

Question 34

Which type of pipe wrench would be best suited for installing one inch black iron pipe in a confined space?

Select one:

a.
Spud

b.
Chain

c.
Strap

d.
Compound

Answer 34

The correct answer is: Chain

Question 35

How do you join lengths of glass piping?

Select one:

a.
Fiber glass resin

b.
Epoxy

c.
Mechanical joints

d.
Flared joints

Answer 35

The correct answer is: Mechanical joints

Question 36

Which type of piping must be protected from ultra-violet light?

Select one:

a.
Galvanized

b.
Cast iron

c.
Plastic

d.
Pyrex

Answer 36

The correct answer is: Plastic

Question 37

What would the rod diameter be when supporting a 6 inch diameter cast iron pipe ?

Select one:

a.
18mm

b.
13mm

c.
8mm

d.
6mm

Answer 37

The correct answer is: 13mm

Question 38

“95-5” solder contains:

Select one:

a.
95% lead, 5% tin

b.
95% lead, 5% zinc

c.
95% tin, 5% antimony

d.
95% tin, 5% lead

Answer 38

The correct answer is: 95% tin, 5% antimony

Question 39

Brazing alloys used for joining copper tubing to copper fittings:

Select one:

a.
may not require a flux

b.
makes the joint brittle

c.
must always be used with a flux

d.
must completely fill the joint in order to be effective

Answer 39

The correct answer is: may not require a flux

Question 40

The process whereby molten solder is drawn into the joint is known as:

Select one:

a.
cohesion

b.
convection

c.
capillary action

d.
conduction

Answer 40

The correct answer is: capillary action

Question 41

Two back-to-back floor outlet water closets have a rough-in measurement of 12 1/2 inches. If there is a nominal 2” x 6” wood stud wall, what is the center-to-center (measurement between the flanges)?

Select one:

a.
28 1/2 inches

b.
30 1/2 inches

c.
31 inches

d.
36 inches

Answer 41

The correct answer is: 30 1/2 inches

Question 41

Solders and fluxes· having a lead content in excess of ____________shall not be used in a potable water system .

Select one:

a.
.2%

b.
2 %

c.
.5%

d.
.1%

Answer 41

2.2.9.2 (2)

The correct answer is: .2%

Question 42

What are the acceptable methods for joining. underground copper water lines?

Select one:

a.
Grooved, Flared, Soldered

b.
Grooved, Brazed, threaded

c.
Flared, Soldered, Compression

d.
Flared, Compression, Brazed .

Answer 42

2.3.3.12

The correct answer is: Flared, Compression, Brazed .

Question 43

What type of brazing alloy is permitted to be used for joining underground copper water lines?

Select one:

a.
BAg

b.
Silphos

c.
BCuP

d.
Silver solder

Answer 43

The correct answer is: BCuP

Question 44

What is the procedure for cutting glass sight tubes?

Select one:

a.
Use a 1/16 inch zip cut blade, but keep the glass cool with water

b.
Completely score the tube, then tap it

c.
Rotate the tubing cutter, tightening the handle 1/8 of a turn per sweep

d.
Partially score the tube, then tap it

Answer 44

The correct answer is: Completely score the tube, then tap it

Question 45

From the following list, the black iron pipe with the thinnest wall section would be designated:

Select one:

a.
XXS

b.
Std

c.
XH

d.
XS

Answer 45

The correct answer is: Std

Question 46

Standard steel pipe is classified according to size by using the nominal diameter for all sizes from 1/8 inch up to and including:

Select one:

a.
12 inch

b.
10 inch

c.
14 inch

d.
16 inch

Answer 46

The correct answer is: 12 inch

Question 47

Under similar freezing conditions, Type “K” copper is less likely to burst than steel pipe because it is:

Select one:

a.
more ductile

b.
smaller

c.
non-ferrous

d.
more tenacious

Answer 47

The correct answer is: more ductile

Question 48

Galvanized pipe is steel pipe, coated with:

Select one:

a.
aluminum oxide

b.
oxide of tin

c.
zinc

d.
a nickel-zinc alloy

Answer 48

C

Question 49

Ductile iron pipe is commonly lined with cement :

Select one:

a.
to prevent corrosion

b.
to help bind the steel molecules

c.
to give it added strength

d.
to aid electrolysis

Answer 49

The correct answer is: to prevent corrosion

Question 50

Which of the following types of copper tube will withstand the greatest bursting pressure?

Select one:

a.
M

b.
K

c.
L

d.
H

Answer 50

The correct answer is: K

Question 51

In the refrigeration and gas fitting trades, copper tubing sizes are commonly specified by:

Select one:

a.
their exact outside diameter

b.
their nominal outside diameter

c.
their exact inside diameter

d.
their nominal inside diameter

Answer 51

The correct answer is: their exact outside diameter

Question 52

The crimp ring used on “PEX” (cross-linked polyethylene) joints should be positioned:

Select one:

a.
1/2 inch from the center of the fitting

b.
1/8 inch to 1/4 inch from the end of the tube

c.
flush with the end of the tube

d.
1/2 inch from the end of the tube

Answer 52

The correct answer is: 1/8 inch to 1/4 inch from the end of the tube

Question 53

The abbreviation for the type of thread used on standard pipe and fittings is:

Select one:

a.
NC

b.
NPS

c.
NFT

d.
NPT

Answer 53

C

Question 54

In description a tee fitting, the correct naming sequence for describing the fitting is :

Select one:

a.
Largest opening run , branch, smaller opening run

b.
Smallest opening run, branch, larger opening run

c.
Larger opening run, smaller opening run , branch

d.
Branch, larger opening run, smaller opening run

Answer 54

The correct answer is: Larger opening run, smaller opening run , branch

Question 55

After tightening a fitting by hand, it’s turned by a wrench approximately:

Select one:

a.
3 1/2 to 4 1/2 turns

b.
1 1/2 to 2 1/2 turns

c.
2 1/2 to 3 1/2 turns

d.
1 to 2 turns

Answer 55

The correct answer is: 2 1/2 to 3 1/2 turns

Question 56

The change in direction of a 1/16 bend is:

Select one:

a.
45 degrees

b.
11 1/4 degrees

c.
60 degrees

d.
22 1/2 degrees

Answer 56

D

Question 57

When using pipe wrenches to tighten a valve onto a stationary pipe, where should they be placed?

Select one:

a.
Only one wrench is ever required

b.
One on the pipe and one on the end of the valve that is accepting the pipe

c.
One on the pipe and one on the end of the valve that is open (no pipe)

d.
Both on the valve

Answer 57

The correct answer is: One on the pipe and one on the end of the valve that is accepting the pipe

Question 58

If a copper water pipe is to be connected to a galvanized-steel nipple, the fitting used should be:

Select one:

a.
a union

b.
di-electric

c.
exposed

d.
serviceable

Answer 58

The correct answer is: di-electric

Question 59

After a soldered joint has been completed, the joint shall be:

Select one:

a.
thoroughly cleaned of all residue

b.
cleaned with TSP

c.
cleaned bright

d.
flushed with soap solution

Answer 59

The correct answer is: thoroughly cleaned of all residue

Question 60

What would be required to braze a 2 inch brass MIP onto a copper tube?

Select one:

a.
No flux is required

b.
Petroleum based flux

c.
Low temperature flux

d.
High temperature flux

Answer 60

The correct answer is: High temperature flux

Question 61

Which of the following copper tubing has the thinnest wall that could be used for a water service?

Select one:

a.
Blue

b.
Yellow

c.
Red

d.
Green

Answer 61

The correct answer is: Blue

Question 62

Which tool is used to correct internal “hi-low” when preparing a 4 inch steel pipe for welding ?

Select one:

a.
A pencil grinder with a cone stone

b.
A 4 inch grinder with a cutting disc

c.
A 4 inch grinder with a 1/4 inch grinding disc

d.
A mini grinder with a flapper disc

Answer 62

The correct answer is: A pencil grinder with a cone stone

Question 63

A sleeve is needed to accommodate 300 mm (12 inch) pipe with insulation that is 38 mm (1 1/2 inch) thick. What pipe size should be used for this sleeve?

Select one:

a.
400 mm (16 inch)

b.
350 mm (14 inch)

c.
450 mm (18 inch)

d.
300 mm (12 inch)

Answer 63

The correct answer is: 400 mm (16 inch)

Question 63

A pipe is being suspended from a concrete structure using 1/2 inch wedge-type female inserts (expansion shield) for supports. What is the procedure for installing these inserts after drilling the correct size hole?

Select one:

a.
Place insert and tighten the locking unit

b.
Apply the epoxy and install the anchor

c.
Place the insert and set the wedge

d.
Insert the anchor and remove the locking nut

Feedback

Answer 63

The correct answer is: Place the insert and set the wedge

Question 64

Which of the following statements is the correct description of swaging copper tubing?
Select one:

a.
To allow the copper tube to connect to other types of fittings.

b.
Allows to ease the sharp edges of copper tube for both the safety and to prevent damage to the tube edges.

c.
To allow lengths of copper tubing to connect to threaded components such as valves.

d.
To expand or to stretch the end of the copper tubing to allow another the tube to fit over another tube of same diameter.

Answer 64

d.
To expand or to stretch the end of the copper tubing to allow another the tube to fit over another tube of same diameter.
Feedback

Question 65

What is the test performed on underground Petroleum lines to insure there are no defects to the protective coating?

Select one:

a.
Ultrasonic Test

b.
Beep Test

c.
Integrity Test

d.
Jeep Test

Feedback

Answer 65

The correct answer is: Jeep Test

Question 66

When using tube benders to make a 90 degree angle, the pull handle moves towards the stationary handle until the?

Select one:

a.
90 degree notch lines up with the 90 degree line on the bending wheel

b.
0 degree notch lines up with the 90 degree line on the bending wheel

c.
45 degree notch lines up with the 90 degree line on the bending wheel

d.
0 degree notch lines up with the 0 degree line on the bending wheel

Answer 66

b.
0 degree notch lines up with the 90 degree line on the bending wheel

Question 66

When it is required to field bevel pipe prior to welding, at what angle do you bevel the edges to?

Select one:

a.
25 degrees

b.
50 degrees

c.
75 degrees

d.
37.5 degrees

Answer 66

The correct answer is: 37.5 degrees

Question 67

Before installing a cast iron fitting, how can you check to see if the fitting is cracked?

Select one:

a.
Pressure Test

b.
Gently tap fittings together or with a hammer

c.
Soap and water

d.
Cast Iron fittings never crack

Answer 67

b.
Gently tap fittings together or with a hammer

Question 68

Some copper tubing is measured by O.D. while other copper tubing may be measured by the I.D. The refrigeration trades use ACR tubing and sometimes GP tubing, what does GP stand for?

Select one:

a.
Gas & Petroleum

b.
Galvanized Pipe

c.
Gas and Plumbing

d.
General Purpose

Answer 68

The correct answer is: General Purpose

Question 69

Hard copper (types K, L and M) is supplied in straight lengths of?

Select one:

a.
10ft/21ft

b.
12ft/21ft

c.
10ft/20ft

d.
12ft/20ft

Answer 69

The correct answer is: 12ft/20ft

Question 70

What is the correct sequence when installing grooved fitting assembly?

Select one:

a.
Check pipe and groove fittings, lubricate gasket, position gasket over pipe and fittings, then install housing and bolts

b.
Lubricate gasket, position gasket over pipe or fitting, align connection and slide into center, install housing and bolts, then tighten nuts

c.
Lubricate gasket, check groove dimensions, install housing and bolts, then tighten nuts

d.
Check groove dimensions, align connections and slide gasket into center position, then tighten nuts

Answer 70

The correct answer is: Lubricate gasket, position gasket over pipe or fitting, align connection and slide into center, install housing and bolts, then tighten nuts

Question 71

What is pipe dope not designed to protect against?

Select one:

a.
Lubrication

b.
Dielectric Protection

c.
Corrosion resistance

d.
Seal

Answer 71

b.
Dielectric Protection

Question 72

How many threads on a 1 inch black iron nipple?

Select one:

a.
14

b.
11.5

c.
10

d.
12

Answer 72

b.
11.5

Question 73

How many threads on a 3/4 inch black iron nipple?

Select one:

a.
12

b.
14

c.
10

d.
11.5

Answer 73

b.
14

Question 73

What is installed to protect downstream piping for ferrous metals from entering the system?

Select one:

a.
Neutralizing Tank

b.
Sump

c.
Strainers

d.
Magnetic P-trap

Answer 73

d.
Magnetic P-trap

Question 74

Which type of thermoplastic pipe is not commonly used with solvent cement to join connections?

Select one:

a.
CPVC

b.
ABS

c.
PE

d.
PVC

Answer 74

c.
PE

Question 75

When you thread plastic pipe (min. schedule 80), the pressure rating is reduced by?

Select one:

a.
15%

b.
75%

c.
50%

d.
25%

Answer 75

c.
50%

Question 76

A NPS 14 will have an outside diameter of?

Select one:

a.
14 inch

b.
14.5 inch

c.
15 inch

d.
14.25 inch

Answer 76

The correct answer is: 14 inch

Question 77

What should be done to the pipe prior to grooving?

Select one:

a.
Bevel the End

b.
Clean end with sand cloth

c.
Clean with TSP

d.
Level and Square

Answer 77

d.
Level and Square

Question 78

The abbreviation MIP is short form for type of fitting?

Select one:

a.
Magnetic Iron Pipe

b.
Mitigation Iron Pipe

c.
Male Iron Pipe

d.
Malleable Iron Pipe

Answer 78

c.
Male Iron Pipe

Question 79

Which of the following statements is incorrect regarding swagelok fittings?

Select one:

a.
Swagelok fittings use a sequential number code to identify material, sizes and component type.

b.
Disassembly of fitting is unnecessary before installation

c.
When tightening the nut for sizes 1 1/4” and larger from hand tight, rotate 3/4 of a turn with your wrench.

d.
Swagelok fittings come completely assembled, finger tight and ready to use.

Answer 79

c.
When tightening the nut for sizes 1 1/4” and larger from hand tight, rotate 3/4 of a turn with your wrench.

Question 80

What is one major advantage of having a spectacle Blind in a pipeline?

Select one:

a.
It prevents foreign material from entering the pipeline

b.
Allows the user to notice if there is a leak in the system

c.
It acts as a dielectric fitting so two dissimilar metals can be join on either end of a flange

d.
It can be seen at a glance if the line is open or closed

Feedback

Answer 80

d.
It can be seen at a glance if the line is open or closed

Question 81

What is the bolt angle on a flange that has 12 holes?

Select one:

a.
60 degrees

b.
30 degrees

c.
45 degrees

d.
90 degrees

Answer 81

b.
30 degrees

Question 82

What is one difference between pipe and tube?

Select one:

a.
Tube is always sized to exact I.D.

b.
There is no difference

c.
Tube is always sized to exact O.D.

d.
Tube doesn’t have as much tolerance for O.D. and wall thickness

Feedback

Answer 82

c.
Tube is always sized to exact O.D.

Question 83

From the following list below select the recommended pipe wrench sized used for 1/2”-1 1/2” inch pipe?

Select one:

a.
14 inch

b.
10 inch

c.
18 inch

d.
24 inch

Answer 83

a.
14 inch

Question 84

Threads are of the proper depth when a new fitting can be screwed in by hand how many turns?

Select one:

a.
2 1/2 - 3 turns

b.
3 1/2 - 4 turns

c.
3 - 4 turns

d.
1 - 2 turns

Answer 84

a.
2 1/2 - 3 turns

Question 85

When joining Butt fusion pipes together, mating surfaces are melted with?

Select one:

a.
Torch

b.
Double Plate Heat Exchanger

c.
Two 120V Electrodes

d.
Hot Plate Heater

Answer 85

d.
Hot Plate Heater

Question 86

The Principle elements in stainless steel pipe are?

Select one:

a.
Chromium/Nickel

b.
Nickel/Cobalt

c.
Antimony/Zinc

d.
Chromium/Zinc

Answer 86

a.
Chromium/Nickel

Question 87

The gasket inside a mechanical joint used to install cast iron drainage systems are typically made from?

Select one:

a.
Nitrile

b.
Neoprene

c.
Styrene-Butadiene Rubber

d.
Polyethylene

Answer 87

b.
Neoprene

Question 88

What wrench is best suited for turning chrome-plated pipe?

Select one:

a.
Crescent wrench

b.
Friction wrench

c.
Square-jawed wrench

d.
Pipe wrench with cloth protection

Feedback

Answer 88

b.
Friction wrench

Question 89

One major advantage of.a compound-leverage pipe wrench is:

Select one:

a.
less expensive

b.
less space needed to operate

c.
increased torque

d.
increased grip

Answer 89

c.
increased torque

Question 90

If vertical pipe must be cut just above floor level, which tool should be used?

Select one:

a.
Internal cutter

b.
Three-wheel cutter

c.
External cutter

d.
Hacksaw

Answer 90

a.
Internal cutter

Question 91

Which of the following would determine the drill speed for a drill bit?

Select one:

a.
Type of material

b.
Drilling position

c.
The type of lubricant used

d.
Thickness of the material

Answer 91

a.
Type of material

Question 92

Which of the following valves would create the greatest friction loss when fully open ?

Select one:

a.
Angle Pattern Globe

b.
Ball

c.
Straight-pattern globe

d.
Gate

Answer 92

c.
Straight-pattern globe

Question 93

Which piping materials may be used to replace a damaged galvanized water line in a historic building?

Select one:

a.
Polypropylene tubing

b.
ASTM A53 black iron pipe

c.
PVDF

d.
Galvanized pipe

Answer 93

d.
Galvanized pipe

Question 94

How would you replace the packing in an 8-inch O.S.&Y. valve that is leaking?

Select one:

a.
Use a single length wrapped around the bonnet

b.
Use multiple pieces but stagger the joints

c.
Use multiple pieces and align the joints

d.
Use graphite paste and a grease gun

Answer 94

b.
Use multiple pieces but stagger the joints