TSSA G2 Study Quiz Questions with Correct Answers

TSSA G2 Study Quiz Questions with Correct Answers On a pilot what causes a lazy yellow flame? - Answer-Dirty lint screen Primary air opening Orifice too big Main functions of a gas regulator? - Answer-Reduce and maintain downstream pressure.Pressure to appliance can be adjusted.Smooth and even flow. What does the measuring element do? - Answer-Measures downstream pressure. What is the restricting element? - Answer-Increases or decreases gas flow Loading element does what? - Answer-set operating pressure. What is the closing force in a regulator? - Answer-The downstream outlet gas pressure What is the function of a regulator vent? - Answer-Allow gas to escape in case of diaphragm rupture or downstream over pressure At the leak limiting orifice how much gas is allowed to leak in a one hour period? - Answer-1 cu ft per hour. Surge limiting valve are used where? - Answer-Applications where regulators are required to be slow opening. Where is the service regulator located?And used to do what? - Answer-At the end of the utility's pipeline. It's used to reduce supply pressure to the building pressure. Appliance regulators serve what purpose? - Answer-The reduce the building pressure to the manifold pressure on the appliance. What is the system regulator?And what pressures does it bring it down to? - AnswerThe regulator between the service regulator and the appliance regulator.From 125-5 psig What does a first stage regulator do, and brings it down to what pressure? - Answer-It reduces cylinder pressure down to supply line pressure.Reduces pressure from 250- 375 psig down to 10 psig. Second stage regulator does what? And brings it down to what pressures? - Answer-It reduces supply line pressure to building pressure.Pressure reduced from 10 psig down to 11" w.c. Corrugated metal gas connector, connected to a range must not exceed - Answer-6ft Black iron pipe 2 1/2 NPS at 150ft long shall be pressure tested to? - Answer-1.5 times the maximum operation pressure for 180 minutes A manual shut off valve shall be installed - Answer-In either drop of riser of a residential appliance Buried piping or tubing shall be - Answer-Only copper type L coated, Type G coated, Type K uncoated Pressure drop - Answer-The difference in working pressure at the gas meter, and the working pressure at the appliance regulator Fittings used of steel piping may be made from? - Answer-Malleable iron and steel The equivalent length of a 2 1/2 forged tee is? - Answer-9.25ft What is the maximum spacing of supports for NPS 11/4 inch gas pipe into a home? - Answer-10ft Direct vent wall furnace shall use what length of corrugated metal gas connector? - Answer-2ft Propane maximim pressure operating pressure is defined as? - Answer-350 psi when connected to the outlet of a pump or compressor What is the maximum distance a readily accessible manual shut off valve may be installed from an appliance? - Answer-50ft and identified When a high pressure test is required on a gas piping system, what type of inert gas shall be used? - Answer-Nitrogen and Carbon Dioxyde What is the required minimum distance plastic piping or tubing must be installed under a commercial parking lot? - Answer-24in A combination fan limit control on a residential warm air furnace shuts off fan heating cycle at? - Answer-90F Diode - Answer-Only allows current to flow in one direction A heat anticipator is wired in ? - Answer-Series with the gas valve Thermocouple open test - Answer-25-30 mV