Deck 14: Fundamentals of LP

Question 1

Most propane systems operate at a pressure of 11" W.C.

Answer 1

True

Question 2

LP gases can be used for heating, refrigeration, transportation, and cooking.

Answer 2

True

Question 3

Which pipe sizing method allows for the use of smaller diameter fuel gas piping with higher pressure fuel gas distribution?

A)hybrid pressure
B)equivalent length
C)longest run
D)branch length

Answer 3

A

Question 4

Why are propane tanks filled to 80 percent capacity instead of 100 percent capacity?

Question 5

Which term means the amount of heat that is released when a fuel is completely burned?

A)heating value
B)specific gravity
C)therm
D)British Thermal Unit

Question 6

According to the National Fuel Gas Code , when must fuel gas piping be tested?

A)after installation
B)before and after connecting appliances
C)before operation
D)all of the above

Question 7

The optimum reading for carbon monoxide in the delivered air stream is

A)less than 10 PPM
B)less than 1 PPM
C)less than .1 PPM
D)zero

Question 8

On a propane system, a pilot burner with a narrow, sharp flame has which of the following problems?

A)clogged pilot filter
B)too much draft
C)undersized orifice
D)excessive gas pressure

Question 9

Which of the following is an advantage of using propane as a fuel source?

A)cost-effectiveness
B)ease of conversion
C)availability
D)all of the above

Question 10

Pipe sizing for most residential and small commercial buildings using propane is done using which of the following methods?

A)hybrid pressure
B)equivalent length
C)longest run
D)branch length

Question 11

NFPA 58 dictates requirements for installations inside the building.

Question 12

___________ is the operating pressure that can be found at the regulator or meter to the gas valve on the appliance.

A)Static pressure
B)System pressure
C)Liquid pressure
D)Gauge pressure

Question 13

The ideal combustion ratio for propane is 1 part propane to 10 parts air.

Question 14

LP gases are derived from the refining processes for natural gas and crude oil.

Question 15

What safety precautions should be taken if a gas leak is suspected?