Gas Fitter 2 Practice Test Study Guide Graded A+

The function of a fixed draft hood is to ensure: A. negative over fire draft B. positive over fire draft C. zero (neutral) over fire draft D. variable over fire draft condition {Ans: C}What is the minimum clearance required from combustible material when a single wall vent connector is used to vent is used to vent a warm air furnace? a) 1 inch b) 3 inches c) 6 inches d) 8 inches. {Ans: C}If it has been determined that a steam boiler burner is on and the water gauge glass indicates no water, what should be done immediately? a) Shut off the fuel supply b) Open the water supply c) Notify the building owner d) Adjust the high pressure limit control. {Ans: A}From the following, what is equivalent to 28" W.C.? a) 0 psia b) 14.7 psia c) 15.7 psia d) 1 psig {Ans: D}Air filtration devices are generally located in the: a) Supply air plenum b) Fresh air plenum c) Return air plenum d) Exhaust air plenum {Ans: C}10. On an electrical schematic, all operating controls are drawn: a) In their energized positions, b) In their de-energized positions, c) Normally closed, d) Normally open.