4th tssa - Study guides, Class notes & Summaries

4th TSSA Part B Unit 4 Exam Questions and Answers Larger capacity, high pressure fuel trains are - Answer-more complex The main burner test firing valve should be opened - Answer-before starting the main burner What is the recommended boiler water pH for wet layup? - Answer-10 R4B Failure to _____ the furnace thoroughly before light-up can cause a furnace explosion. - Answer-purge R4B When cooling down a steam boiler that has been taken out of service, a vent valve on a steam drum ...

4th TSSA Part B - Unit 10 UPDATED Exam Questions and CORRECT Answers 4-125-4.6) The dew point is the: - Ans Temperature below which water vapour will start to condense out of the air (4-130-4.2) Modulating control valves: - Ans Can successfully control steam coils, as long as the air entering the coil is at or above 1.5°C . (4-125-4.9) Dry-bulb temperature is: - Ans The temperature of the air measured with an ordinary thermomete

4th TSSA Part B - Unit 9 UPDATED Exam Questions and CORRECT Answers (4-113-1.9) The two major types of compression refrigeration systems are: - Ans Indirect and Direct (4-116-1.4) The safety head of a refrigeration compressor is designed to: - Ans Relieve pressure due to liquid in the cylinder (4-120-1.2) A pressure relief device on a refrigeration system shall have sufficient capacity to prevent the pressure in the pressure vessel from rising more than _____ above the setting of the ...

(4-075-int.1) Compressed air tools tend to be: - More expensive than electrical tools R4B Temperature relief devices limit the temperature in domestic hot water systems to no more than: - 99°C (4-143-2.14) What is the primary use of the ground wood pulp, produced by the mechanical process? - Newsprint R4B The cheapest and most commonly used grease is: - Lime base R4B In a circulatingdomestichot water system, automatic air vents - Remove air that is released when water is heated R4B Natu...

When a combustion air opening is equipped with dampers, the dampers must be - interlocked with the burner, and fully open before starting the boiler. R4B A substance that absorbs humidity inside a boiler during dry layup is: - Activated alumina (4-142-1.3) The high oil temperature shutdown device of an oil-fired heater senses the: - Oil temperature at the furnace outlet R4B A boiler furnace pre-purge: - must last a specific amount of time. R4B In a building plumbing system, the potable wa...

4th TSSA Part B - Unit 2 UPDATED Exam Questions and CORRECT Answers (4-074-5.3) Most pump troubles occur: - Ans During initial start up (4-073-3.6) Centrifugal pumps convert rotating mechanical energy into kinetic energy then: - Ans Into potential energy in the form of pressure (4-074-2.10) If the packing gland of a centrifugal water pump is leaking too much: - Ans Tighten up the gland but permit a slight amount of leakage

(4-075-int.1) Compressed air tools tend to be: - More expensive than electrical tools R4B Temperature relief devices limit the temperature in domestic hot water systems to no more than: - 99°C (4-143-2.14) What is the primary use of the ground wood pulp, produced by the mechanical process? - Newsprint R4B The cheapest and most commonly used grease is: - Lime base R4B In a circulatingdomestichot water system, automatic air vents - Remove air that is released when water is heated R4B Natu...

When a combustion air opening is equipped with dampers, the dampers must be - interlocked with the burner, and fully open before starting the boiler. R4B A substance that absorbs humidity inside a boiler during dry layup is: - Activated alumina (4-142-1.3) The high oil temperature shutdown device of an oil-fired heater senses the: - Oil temperature at the furnace outlet R4B A boiler furnace pre-purge: - must last a specific amount of time. R4B In a building plumbing system, the potable wa...

4th TSSA Part B Test (IV) Questions & Answers 2024(A+GRADED 100%VERIFIED)

4th TSSA Part A (IV) Questions & Answers 2024(A+GRADED 100%VERIFIED)