4th TSSA Part B Test (II) UPDATED
ACTUAL Exam Questions and CORRECT
Answers
(4-075-int.1) Compressed air tools tend to be: - CORRECT 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: - CORRECT ANSWER - 99°C
(4-143-2.14) What is the primary use of the ground wood pulp, produced by the mechanical
process? - CORRECT ANSWER - Newsprint
R4B01-01-02-10 The cheapest and most commonly used grease is: - CORRECT
ANSWER - Lime base
R4B08-02-02-02 In a circulatingdomestichot water system, automatic air vents - CORRECT
ANSWER - Remove air that is released when water is heated
R4B05-02-04-06 Natural ropes are made of: - CORRECT ANSWER - Manila
(4-132-4.2) Which one of the following statements about central air conditioning systems is
FALSE? - CORRECT 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: - CORRECT ANSWER - Flushometers
An HVAC system is a ___________ system. - CORRECT ANSWER - Heating,
Ventilation, and Air Conditioning system
,(4-067-1.7) An acceptable pH value for boiler water is: - CORRECT ANSWER - 10.5
(4-142-2.11) The inlet of a hot oil pump is located: - CORRECT ANSWER - Below the
expansion tank
(4-093-2.11) The minimum DN size of the blowoff piping of a steam heating boiler is: -
CORRECT ANSWER - 20 mm
(4-136-1.2) Thermal conductivity (λ) is the: - CORRECT 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: - CORRECT ANSWER -
In the non-pressure area
(4-093-2.5) A steam boiler is regularly blown off in order to: - CORRECT 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: - CORRECT ANSWER - An oil separator
(4-142-2.7) Hot oils are used as heat transfer media for systems operating up to: - CORRECT
ANSWER - 200°C
R4B01-02-04-20 With antifriction bearings using grease, the bearings: - CORRECT
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: - CORRECT ANSWER -A
Saybolt viscometer
, R4B08-03-01-02 Building drainage systems - CORRECT 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? - CORRECT ANSWER - 0.6
R4B08-02-02-01 Non-circulating potable hot water systems: - CORRECT ANSWER -
waste large amounts of water before hot water is available at the fixtures
The major building occupancy classes include all of the following, except: - CORRECT
ANSWER - Educational
R4B08-02-01-06 Building codes generally limit the highest pressure permissible in plumbing
systems to: - CORRECT ANSWER - 560 kPa
(4-098-1.13) One of the advantages of forced circulation heating systems, in comparison to
gravity heating systems, is: - CORRECT ANSWER - Smaller diameter pipes can be used
(4-113-1.9) The two major types of compression refrigeration systems are: - CORRECT
ANSWER - Indirect and Direct
R4B05-02-02-01 A common way to determine the mass of an object to be hoisted is by
determining its - CORRECT ANSWER - Density and volume
Cutting steam boilers into a pressurized system is different for heating boilers and power boilers,
because - CORRECT ANSWER - steam heating systems may not have all the valves and
drains that power boiler systems have
(4-128-2.5) Fibreglass ducts are used: - CORRECT ANSWER - In some low pressure
systems
ACTUAL Exam Questions and CORRECT
Answers
(4-075-int.1) Compressed air tools tend to be: - CORRECT 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: - CORRECT ANSWER - 99°C
(4-143-2.14) What is the primary use of the ground wood pulp, produced by the mechanical
process? - CORRECT ANSWER - Newsprint
R4B01-01-02-10 The cheapest and most commonly used grease is: - CORRECT
ANSWER - Lime base
R4B08-02-02-02 In a circulatingdomestichot water system, automatic air vents - CORRECT
ANSWER - Remove air that is released when water is heated
R4B05-02-04-06 Natural ropes are made of: - CORRECT ANSWER - Manila
(4-132-4.2) Which one of the following statements about central air conditioning systems is
FALSE? - CORRECT 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: - CORRECT ANSWER - Flushometers
An HVAC system is a ___________ system. - CORRECT ANSWER - Heating,
Ventilation, and Air Conditioning system
,(4-067-1.7) An acceptable pH value for boiler water is: - CORRECT ANSWER - 10.5
(4-142-2.11) The inlet of a hot oil pump is located: - CORRECT ANSWER - Below the
expansion tank
(4-093-2.11) The minimum DN size of the blowoff piping of a steam heating boiler is: -
CORRECT ANSWER - 20 mm
(4-136-1.2) Thermal conductivity (λ) is the: - CORRECT 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: - CORRECT ANSWER -
In the non-pressure area
(4-093-2.5) A steam boiler is regularly blown off in order to: - CORRECT 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: - CORRECT ANSWER - An oil separator
(4-142-2.7) Hot oils are used as heat transfer media for systems operating up to: - CORRECT
ANSWER - 200°C
R4B01-02-04-20 With antifriction bearings using grease, the bearings: - CORRECT
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: - CORRECT ANSWER -A
Saybolt viscometer
, R4B08-03-01-02 Building drainage systems - CORRECT 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? - CORRECT ANSWER - 0.6
R4B08-02-02-01 Non-circulating potable hot water systems: - CORRECT ANSWER -
waste large amounts of water before hot water is available at the fixtures
The major building occupancy classes include all of the following, except: - CORRECT
ANSWER - Educational
R4B08-02-01-06 Building codes generally limit the highest pressure permissible in plumbing
systems to: - CORRECT ANSWER - 560 kPa
(4-098-1.13) One of the advantages of forced circulation heating systems, in comparison to
gravity heating systems, is: - CORRECT ANSWER - Smaller diameter pipes can be used
(4-113-1.9) The two major types of compression refrigeration systems are: - CORRECT
ANSWER - Indirect and Direct
R4B05-02-02-01 A common way to determine the mass of an object to be hoisted is by
determining its - CORRECT ANSWER - Density and volume
Cutting steam boilers into a pressurized system is different for heating boilers and power boilers,
because - CORRECT ANSWER - steam heating systems may not have all the valves and
drains that power boiler systems have
(4-128-2.5) Fibreglass ducts are used: - CORRECT ANSWER - In some low pressure
systems
