Practical Problems 2

50問 • 1ヶ月前

問題一覧

A variation of pipe wrench with a swiveling serrated jaw and knurled control knob located between the frame forming the head and the handled of the wrench?

Stillson wrench

As an experienced plumber, what is the recommended size of the drain serving water closet?

4 in.

A brewery plant requires a piping system to convey beer, ale, spirituous liquor and distilled water What kind of pipe to be used?

Black Tin Pipe

A red spiral line painted on a pipe identified the pipe as ___.

Wrought-iron pipe

A hotel requires hot and cold water supplies. What kind of pipes best suited?

Copper pipe

A registered master plumber is consulted to install piping system for water, gas, steam and oil. What kind of pipe is recommended?

Cast iron pipe

What kind of pipe to be used where heating panels are considered in concrete slabs for the purpose of melting snow?

Wrought iron pipe

When cutting pipe that coated internally with enamel or glass, delicate core should be taken to avoid cracking or chipping the internal coating. What kind of tool that should NEVER used for cutting such pipe?

Wheel pipe cutter

When a very short pipe is threaded. What will you see?

Nipple chuck

What is the tool used for expanding the ends of lead pipe?

Turn pin

When using an extension ladder, what will be the maximum sliding sections allowed?

2 sliding sections

An 8 meters aluminum ladder is used in delivering plumbing fixtures to the second the foot of the ladder be placed from the wall of the building?

2 meters

As registered master plumber, you have to use a ladder to carry the pipes to the second floor of the building, what will be the horizontal distance from the foot of the ladder to the wall that you considered proper?

1/4 of the ladders length

What is the valve recommended for installation that call for throttling?

Globe valve

What is the approximate height above the floor level of a kitchen sink?

36 inches

What is the approximate height above the floor level of a built-in bathtub floor level?

16 inches

What is the device used to support the water supply riser?

Pipe rest

What is that fitting necessary in a water supply system which is used to the water supply in some portion of the installation?

Valve

What kind of valve is suited for the water main supply lines and pump lines?

Gate valve

Generally, the registered master plumber must be systematic in connecting the riser branches to the main of the water supply system. What will be the right angle of all branches connection to the main?

What do you call the plugging of an opening with oakum, lead or other materials which are pounded into place or materials pounded into the opening?

Caulking

The material used to join or connect plastic is called?

Solvent cement

What is the minimum length of time before a jointed plastic pipe be subjected to pressure test?

2 hours

In bending plastic, what will be the practical material to be used to prevent fattening of the

Sand

What is the part of the piping of a plumbing installation which supplies the plumbing fixtures with an adequate flow of water?

Domestic water distribution system

What is the usual horizontal length that the cast iron be supported to prevel damage at joints caused by sagging?

1.5m

What will be provided to prevent contamination from the polluted water of the fire truck to the house water supply system?

Check valves & gate valve

What is the name of the instrument which used in caulking oakum in the joints of cast iron pipe?

Yarning iron

On what type of building are wet standpipes generally used?

Tall building

What is that feature which offers a convenient water supply for firemen, making it necessary for the fire department to transport and user much expensive fire fighting apparatus?

Stand pipe

Fire system piping is usually painted with?

Red color

What is the device which is to be installed on the water service between the edge of the street and the sidewalk line which serves as a control valve in case water supply in cut-off to the building?

Curb stop

What circumstances should the curb stop is used?

When the water has to be controlled.

Why is it corporation stop required when the main water pipe is tapped with pressure on?

It serves as a control stop.

It is essential that pipe threads to be cut accurately to ensure that threads for fittings will be universal so that the manufacturers of pipe threading equipment follow the American Standard. How many threads per inch for pipes having a diameter of 3 inches diameter?

The allowable tensile stress of wrought iron steel pipe is 750 psi. It is to be used l for hot water supply with working pressure of 300 psi. what schedule of the pipe should you specify? N = 100P

A schedule of 80 wrought iron pipe can withstand a steam pressure up to?

600 psi

A wrought iron pipe schedule of 40 can withstand a steam pressure up to?

300 psi

Name that tool which is made of boxwood, dogwood or lignum vitae, and it is used for dressing or working sheetlead, lead pipe bends, and bath traps.

Dresser

What is the handy tool for threading the end of the pipe in a trench or in the corner of a cellar where a pipe projects too far and threaded in place?

Rachet stocks

In the trade of piping, the term "tapping" is used to described ___.

Cutting of internal threads

A pipe vise is needed to

Keep pipe rigid for cutting

In a certain plumbing installation, a lead pipe is being used. How do you usually join the lead pipe?

Melting the pipe ends

What should be the maximum length of the ladder when fully extended of a an extension ladders?

60 feet

What will be the maximum water service pressure at the point where the building distribution system begins?

80 psi

What is usually the primary cause of troubles in excavating operations for water pipes?

Lack of shoring

What is the suitable gasket material for a flange union in oil lines?

Metallic

What is the suitable gasket material for flange union in cold water piping?

Rubber

What is the suitable gasket material for hange union in gasoline conduction?

Metallic

What is the smallest plumbing fixture used as the basis in determining the fixture unit value?

Lavatory or wash basin

YT1 Materials Engineer EXAM

ユーザ名非公開 · 100問 · 1ヶ月前

YT1 Materials Engineer EXAM