4th TSSA Part B Test (II) 2025/2026 Exam
Questions and Detailed Answers | Get it
100% Correct Answers
(4-075-int.1) Compressed air tools tend to be: - 🧠ANSWER ✔✔More
expensive than electrical tools
R4B08-02-04-03 Temperature relief devices limit the temperature in
domestic hot water systems to no more than: - 🧠ANSWER ✔✔99°C
(4-143-2.14) What is the primary use of the ground wood pulp, produced by
the mechanical process? - 🧠ANSWER ✔✔Newsprint
R4B01-01-02-10 The cheapest and most commonly used grease is: -
🧠ANSWER ✔✔Lime base
R4B08-02-02-02 In a circulatingdomestichot water system, automatic air
vents - 🧠ANSWER ✔✔Remove air that is released when water is heated
R4B05-02-04-06 Natural ropes are made of: - 🧠ANSWER ✔✔Manila
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,(4-132-4.2) Which one of the following statements about central air
conditioning systems is FALSE? - 🧠ANSWER ✔✔Unitary systems can
control noise and vibration better than central systems
R4B08-02-06-03 Some water closets are provided with flush tanks while
others are equipped with: - 🧠ANSWER ✔✔Flushometers
An HVAC system is a ___________ system. - 🧠ANSWER ✔✔Heating,
Ventilation, and Air Conditioning system
(4-067-1.7) An acceptable pH value for boiler water is: - 🧠ANSWER
✔✔10.5
(4-142-2.11) The inlet of a hot oil pump is located: - 🧠ANSWER ✔✔Below
the expansion tank
(4-093-2.11) The minimum DN size of the blowoff piping of a steam heating
boiler is: - 🧠ANSWER ✔✔20 mm
(4-136-1.2) Thermal conductivity (λ) is the: - 🧠ANSWER ✔✔Conductive
heat transfer through a unit thicknessof a single uniform type of materia
R4B01-02-02-03 Large journal or sleeve bearings have grooves: -
🧠ANSWER ✔✔In the non-pressure area
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
, (4-093-2.5) A steam boiler is regularly blown off in order to: - 🧠ANSWER
✔✔Discharge sediment from the boiler
(4-120-1.7) The accessory that maintains efficient heat transfer by
collecting oil before it coats the tubes of the condenser is called: -
🧠ANSWER ✔✔An oil separator
(4-142-2.7) Hot oils are used as heat transfer media for systems operating
up to: - 🧠ANSWER ✔✔200°C
R4B01-02-04-20 With antifriction bearings using grease, the bearings: -
🧠ANSWER ✔✔Are cleaned less often than oil-lubricated bearings
R4B01-01-03-20The instrument that measures the viscosity of an oil at a
certain temperature as it flows through a small diameter tube[comma] is
called: - 🧠ANSWER ✔✔A Saybolt viscometer
R4B08-03-01-02 Building drainage systems - 🧠ANSWER ✔✔are vented to
keep fluid from being drawn out of the traps
R4B08-01-05-01 In large buildings, approximately what percentage of the
electrical load is lighting? - 🧠ANSWER ✔✔0.6
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
Questions and Detailed Answers | Get it
100% Correct Answers
(4-075-int.1) Compressed air tools tend to be: - 🧠ANSWER ✔✔More
expensive than electrical tools
R4B08-02-04-03 Temperature relief devices limit the temperature in
domestic hot water systems to no more than: - 🧠ANSWER ✔✔99°C
(4-143-2.14) What is the primary use of the ground wood pulp, produced by
the mechanical process? - 🧠ANSWER ✔✔Newsprint
R4B01-01-02-10 The cheapest and most commonly used grease is: -
🧠ANSWER ✔✔Lime base
R4B08-02-02-02 In a circulatingdomestichot water system, automatic air
vents - 🧠ANSWER ✔✔Remove air that is released when water is heated
R4B05-02-04-06 Natural ropes are made of: - 🧠ANSWER ✔✔Manila
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,(4-132-4.2) Which one of the following statements about central air
conditioning systems is FALSE? - 🧠ANSWER ✔✔Unitary systems can
control noise and vibration better than central systems
R4B08-02-06-03 Some water closets are provided with flush tanks while
others are equipped with: - 🧠ANSWER ✔✔Flushometers
An HVAC system is a ___________ system. - 🧠ANSWER ✔✔Heating,
Ventilation, and Air Conditioning system
(4-067-1.7) An acceptable pH value for boiler water is: - 🧠ANSWER
✔✔10.5
(4-142-2.11) The inlet of a hot oil pump is located: - 🧠ANSWER ✔✔Below
the expansion tank
(4-093-2.11) The minimum DN size of the blowoff piping of a steam heating
boiler is: - 🧠ANSWER ✔✔20 mm
(4-136-1.2) Thermal conductivity (λ) is the: - 🧠ANSWER ✔✔Conductive
heat transfer through a unit thicknessof a single uniform type of materia
R4B01-02-02-03 Large journal or sleeve bearings have grooves: -
🧠ANSWER ✔✔In the non-pressure area
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
2
, (4-093-2.5) A steam boiler is regularly blown off in order to: - 🧠ANSWER
✔✔Discharge sediment from the boiler
(4-120-1.7) The accessory that maintains efficient heat transfer by
collecting oil before it coats the tubes of the condenser is called: -
🧠ANSWER ✔✔An oil separator
(4-142-2.7) Hot oils are used as heat transfer media for systems operating
up to: - 🧠ANSWER ✔✔200°C
R4B01-02-04-20 With antifriction bearings using grease, the bearings: -
🧠ANSWER ✔✔Are cleaned less often than oil-lubricated bearings
R4B01-01-03-20The instrument that measures the viscosity of an oil at a
certain temperature as it flows through a small diameter tube[comma] is
called: - 🧠ANSWER ✔✔A Saybolt viscometer
R4B08-03-01-02 Building drainage systems - 🧠ANSWER ✔✔are vented to
keep fluid from being drawn out of the traps
R4B08-01-05-01 In large buildings, approximately what percentage of the
electrical load is lighting? - 🧠ANSWER ✔✔0.6
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
