Gas Tradesman Exam Questions 2

What is the air to gas ratio for complete combustion of natural gas?

Which of the following devices will shut off the gas supply in the event of mechanical ventilation failing to operate?

Which formula is used to calculate meter correction factor for pressure?

101.3 + (2.5 ÷ 101.3)

(101.3 x burner pressure) ÷ 101.3

(101.3 + supply pressure) ÷ 101.3

9.81 + (atmospheric pressure ÷ 101.3)

(Atmospheric pressure + heating value) ÷ 101.3

Which of the following is likely to cause an appliance regulator to make a chattering sound?

The injectors of the appliance are blocked.

The regulator is leaking

The regulator is not receiving enough pressure.

The regulator breather hole has been enlarged

The regulator seat is jammed closed.

According to AS/NZS 5601 Part 1, what minimum clearance must there be between an open flue terminal and another flue terminal?

According to AS/NZS 5601 Part 1, what is the maximum permitted gas consumption of an appliance where a twin wall flue is to be used in a cavity wall in a domestic location?

According to the Gas (Safety and Measurement) Regulations, what does the abbreviation GSC stand for?

The efficiency of a gas appliance can be found using which calculation?

Appliance heat input ÷ heat output.

Appliance MJ/h × heating value of the gas.

Appliance heat output ÷ heat input

Appliance MJ/m3 ÷ heating value of the gas

Appliance heat input × heat output.

Gas Tradesman Exam Questions 2

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