3e151 B Set Vol 1

100 Questions | By Enorab | Updated: Mar 20, 2022 | Attempts: 863

Questions

Settings

Feedback

During the Quiz End of Quiz

Play as

Quiz Flashcard

Create your own Quiz

UREs for B set of 3E151 cdcs Vol 1.

Questions and Answers

1.

Which of the following is a fuel that is refined from lighter hydrocarbons?
- A.
  
  Lubrication oil
- B.
  
  Liguefied petroleum gases (LPG)
- C.
  
  Petroleum coke
- D.
  
  Asphalt
2.

What characteristic of fuel oil indicates the minimum temperature at which the oil can be pumped and is useful in the handling of heavy oils?
- A.
  
  Flash point
- B.
  
  Pour point
- C.
  
  Viscosity
- D.
  
  Specific gravity
3.

What characteristic of fuel oil can cause plug burners and screens and erratic combustion such as sparkling and flashback?
- A.
  
  Low viscosity
- B.
  
  High viscosity
- C.
  
  Sulfur content
- D.
  
  Water and sediment
4.

What item is installed on a single-stage pump when used on a two-pipe fuel line system?
- A.
  
  Bleed slot
- B.
  
  Bypass port
- C.
  
  Needle valve
- D.
  
  Prime port
5.

How far from the bottom of the fuel tanks should the suction line end?
- A.
  
  2 to 3 inches
- B.
  
  3 to 4 inches
- C.
  
  4 to 5 inches
- D.
  
  5 to 6 inches
6.

When there is a long underground run of the suction line, where would a check valve be installed into the line?
- A.
  
  Next to the burner
- B.
  
  Next to the pump
- C.
  
  Where it enter the building
- D.
  
  Where it leaves the tank
7.

When a return line rises from the burner, it is well advise to provide a check valve
- A.
  
  On the return line as it leaves the building
- B.
  
  On the supply line next to the burner
- C.
  
  Close to the tank inlet
- D.
  
  Close to the pump discharge
8.

Oil strainers should be cleaned at regular intervals with steam, hot water, solvent, or
- A.
  
  Gasoline
- B.
  
  Compressed air
- C.
  
  Gasoline and hot water
- D.
  
  Water and soap solution
9.

What is the average heating value of natural gas per cubic feet?
- A.
  
  500 btus
- B.
  
  1000 btus
- C.
  
  1500 btus
- D.
  
  2000 btus
10.

At ordinary atmospheric pressure, with the necessary heat of vaporization added, butane boils or changes from a liquid to a gaseous state at
- A.
  
  -42*F
- B.
  
  -32*F
- C.
  
  0*F
- D.
  
  32*F
11.

In low pressure systems, gas is usually distributed at pressures from
- A.
  
  0 to 5 ounces psi
- B.
  
  3 to 8 ounces psi
- C.
  
  1 1/2 psi to 25 psi
- D.
  
  25 to 50 psi
12.

A gas service line should be installed at least how many inches below the ground surface?
- A.
  
  10 inches
- B.
  
  14 inches
- C.
  
  18 inches
- D.
  
  24 inches
13.

To measure the amount of fuel oil in a storage tank by hand, you must first know the
- A.
  
  Diameter of the tank
- B.
  
  Length of the tank
- C.
  
  Height of the tank
- D.
  
  Capacity of the tank
14.

If you are repairing an 80ft long gas line on the ceiling in a mechanical room, you should use at least
- A.
  
  5 to 7 hangers
- B.
  
  8 to 10 hangers
- C.
  
  12 to 15 hangers
- D.
  
  16 to 18 hangers
15.

Which measures is being used to control static electricity, hwere the static charges which builds up within a object will be carried off harmlessly, neutralizing the difference in electrical potential?
- A.
  
  Bonding
- B.
  
  Grounding
- C.
  
  Humidification
- D.
  
  Vaporization
16.

Conductive greases and V-belts on a shaft pulleys are examples of effective
- A.
  
  Bonding
- B.
  
  Grounding
- C.
  
  Testing for static electrical potentials
- D.
  
  Eliminating all electrical hazards
17.

How soon must a reportable spill be reported?
- A.
  
  Within 12 hours
- B.
  
  Within 24 hours
- C.
  
  Within 36 hours
- D.
  
  Within 48 hours
18.

What limits the maximum firing rate on a gas burner?
- A.
  
  Flashback
- B.
  
  Primary air
- C.
  
  Secondary air
- D.
  
  Flame blow-off
19.

What is dependent upon burner and combustion chamber design?
- A.
  
  Amount of main air
- B.
  
  Amount of firing air
- C.
  
  Flame shape
- D.
  
  Turndown adjustment
20.

What type of gas burner delivers the gas into the combustion chamber from the side(s) resulting in a horizontal flame?
- A.
  
  Inshot burner
- B.
  
  Upshot burner
- C.
  
  Downshot burner
- D.
  
  Overshot burner
21.

What type of pilot is automatically turned on each time there is a call for heat and automatically cuts off at the end of the main burner flame-establishing period?
- A.
  
  Continuous pilot
- B.
  
  Standing pilot
- C.
  
  Interrupted pilot
- D.
  
  Intermittent pilot
22.

Port type burners are classified as
- A.
  
  Small port, large port, or tile port burners
- B.
  
  Premixing port, small port, or large port burners
- C.
  
  Single prot, double port, or tile port burners
- D.
  
  Premixing port, single port, or double port burners
23.

What type of port as burner is limited to low temperature applications due to physical structure?
- A.
  
  Single port
- B.
  
  Small port
- C.
  
  Large port
- D.
  
  Tile port
24.

For proportional air inspiration at high mixture pressures, what limits the range of worktable spud orifice diameters?
- A.
  
  Amount of primary air
- B.
  
  Amount of secondary air
- C.
  
  Size of the venturi throat
- D.
  
  Length of the venturi throat
25.

What valve is used in a gas valve train to shut off the gas when you are repairing or replaceing other components?
- A.
  
  Safety shutoff
- B.
  
  Pressure regulator
- C.
  
  Fire control
- D.
  
  Manual shutoff