Deck 12: Gas Appliances, Regulators, Meters and Appliance Controls

Question 1

Which type of burner does not use any primary air for combustion?

A)absorption
B)injection
C)luminous
D)power

Answer 1

C

Question 2

If a gas regulator is installed outside, the vent opening should face which direction? Why?

Answer 2

The vent should face down to prevent rainwater from entering the assembly.

Question 3

Which of the following results when the blower is arranged to blow air into the combustion chamber?

A)induced draft
B)reduced draft
C)forced draft
D)primary air

Answer 3

C

Question 4

Who created the injection burner?

A)Bunsen
B)Benson
C)Einstein
D)Franklin

Question 5

Which type of burner is most often used for small-fired appliances?

A)absorption
B)injection
C)luminous
D)power

Question 6

Which type of burner uses a motor-driven blower to deliver primary and secondary air to the combustion zone?

A)absorption
B)injection
C)luminous
D)power

Question 7

Which of the following meters is  used for smaller loads and lower pressures?

A)rotary
B)displacement
C)placement
D)manual

Question 8

Absorption units use a mixture of ____________________ and water as refrigerant and require special training and tools to service.

Question 9

Many standing pilot appliances are being replaced with ____________________ devices because of the growing need for fuel economy and efficiency.

Question 10

What safety device trips closed when the line pressure exceeds a set value?

Question 11

Which of the following is defined as a reduction in the primary air intake area that reduces the amount of gas being burned and results in a smaller, soft, and lazy flame?

A)overfiring
B)underfiring
C)spud
D)high efficiency

Question 12

The principal control device used to achieve lower pressures in gas supply systems is called a(n)____________________.

Question 13

Which automatic control is a control module capable of monitoring its entire system?

A)thermocouple
B)bimetal disk
C)integrated furnace controller
D)electric pilot igniter

Question 14

Which of the following meters is used for large volumes and are suitable for any pressure?

A)rotary
B)displacement
C)placement
D)manual