NATIONAL PRACTICE EXAM 1 WITH
VERIFIED SOLUTIONS GRADED PASS
Where is the expansion tank typically, in an
open system?
(a) Below the highest level radiator
(b) Above the highest level radiator
(c) Horizontal of the highest level radiator
(d) Inside of the highest level radiator
(b) Above the highest level radiator
1. Copper-tube boilers typically have:
(a) Better heat transfer characteristics, and
longer lifespans than cast-iron boilers
(b) Better heat transfer characteristics, but
shorter lifespans than cast-iron boilers
(c) Worse heat transfer characteristics, but
longer lifespans than cast-iron boilers
(d) Worse heat transfer characteristics, and
shorter lifespans than cast-iron boilers
,(b) Better heat transfer characteristics, but
shorter lifespans than cast-iron boilers
2. Which of the following is a similarity
between furnaces and boilers?
(a) Piping
(b) A low-level safety device
(c) High-temperature limit switches
(d) Backflow preventers
(c) High-temperature limit switches
List the four safety controls found on
hydronic systems:
(a) Pressure relief valve, high temperature
limit, low-water cutout, backflow preventer
(b) Low temperature limit, high water cut
out, backflow preventer, pressure relief
valve
(c) Pressure relief valve, high temperature
limit, water cutoff, back flow preventer
(d) Pressure relief, high temperature limit,
low water cutout, back flow preventer
,(a) Pressure relief valve, high temperature limit,
low-water cutout, backflow preventer
What is the normal operating pressure in a
boiler?
(a) 2 to 5 psi
(b) 5 to 9 psi
(c) 12 to 15 psi
(d) 9 to 12 psi
(e) 15 to 18 psi
(c) 12 to 15 psi
In a two-story Victorian home with a boiler
in the basement you find a pressure-
reducing valve set to 12 psi. Is there a
possibility that his valve is set too low?
(a) Yes
(b) No
(b) No
When a black steel pipe is extended with
copper pipe, what can occur?
, (a) The steel pipe may rust at the connection
due to galvanic reaction
(b) The circulator may not be able to
overcome the pressure change at the
junction
(c) The copper pipe will wear through with
the friction force of the water
(d) The copper pipe will rust because of the
galvanic reaction
(a) The steel pipe may rust at the connection
due to galvanic reaction
What is the purpose of the bleed valve near
the top of the radiator?
(a) It does not have a purpose
(b) This allows the homeowner to fill the
radiator with water
(c) This allows the homeowner to remove
trapped air from the radiator, letting the
radiator fill with water and heat the room
effectively
VERIFIED SOLUTIONS GRADED PASS
Where is the expansion tank typically, in an
open system?
(a) Below the highest level radiator
(b) Above the highest level radiator
(c) Horizontal of the highest level radiator
(d) Inside of the highest level radiator
(b) Above the highest level radiator
1. Copper-tube boilers typically have:
(a) Better heat transfer characteristics, and
longer lifespans than cast-iron boilers
(b) Better heat transfer characteristics, but
shorter lifespans than cast-iron boilers
(c) Worse heat transfer characteristics, but
longer lifespans than cast-iron boilers
(d) Worse heat transfer characteristics, and
shorter lifespans than cast-iron boilers
,(b) Better heat transfer characteristics, but
shorter lifespans than cast-iron boilers
2. Which of the following is a similarity
between furnaces and boilers?
(a) Piping
(b) A low-level safety device
(c) High-temperature limit switches
(d) Backflow preventers
(c) High-temperature limit switches
List the four safety controls found on
hydronic systems:
(a) Pressure relief valve, high temperature
limit, low-water cutout, backflow preventer
(b) Low temperature limit, high water cut
out, backflow preventer, pressure relief
valve
(c) Pressure relief valve, high temperature
limit, water cutoff, back flow preventer
(d) Pressure relief, high temperature limit,
low water cutout, back flow preventer
,(a) Pressure relief valve, high temperature limit,
low-water cutout, backflow preventer
What is the normal operating pressure in a
boiler?
(a) 2 to 5 psi
(b) 5 to 9 psi
(c) 12 to 15 psi
(d) 9 to 12 psi
(e) 15 to 18 psi
(c) 12 to 15 psi
In a two-story Victorian home with a boiler
in the basement you find a pressure-
reducing valve set to 12 psi. Is there a
possibility that his valve is set too low?
(a) Yes
(b) No
(b) No
When a black steel pipe is extended with
copper pipe, what can occur?
, (a) The steel pipe may rust at the connection
due to galvanic reaction
(b) The circulator may not be able to
overcome the pressure change at the
junction
(c) The copper pipe will wear through with
the friction force of the water
(d) The copper pipe will rust because of the
galvanic reaction
(a) The steel pipe may rust at the connection
due to galvanic reaction
What is the purpose of the bleed valve near
the top of the radiator?
(a) It does not have a purpose
(b) This allows the homeowner to fill the
radiator with water
(c) This allows the homeowner to remove
trapped air from the radiator, letting the
radiator fill with water and heat the room
effectively
