Power Engineering - 4B8 Practice Questions with Verified Answers
Which of the following statements about a pressure relief
valve in a building hot water system is FALSE?
a. The valve may be installed anywhere in the hot water
system close to the heater or tank
b. The valve opens when system pressure exceeds the
d. The relief valve may be isolated from the vessel it serves
valve set point.
by means of a gate valve, for the purposes of maintenance
c. The valve closes automatically when the water pressure
drops below the valve set point
d. The relief valve may be isolated from the vessel it serves
by means of a gate valve, for the purposes of mainte-
nance.
Direct lighting systems:
a. Have a higher initial cost than indirect lighting
c. Are more energy eflcient than indirect lighting
b. Have greater glare control
c. Are more energy eflcient than indirect lighting
d. Produce shadow free light
maintenance. Which of the following statements about
building footing drains is FALSE?
a. Footing drains are installed to prevent ground water
from accumulating around building foundations.
d. Footing drains are only installed in wet climates.
b. Footing drains are used to reduce the hydrostatic pres-
sure on the walls below ground level.
c. The water collected by footing drains is directed to a
remote area or into a sump.
d. Footing drains are only installed in wet climates.
With regard to a constant pressure potable water system
that uses a pneumatic tank, which of the following state-
ments is FALSE?
, Power Engineering - 4B8 Practice Questions with Verified Answers
a. Water from the pump discharges into a pressurized
tank
b. Use of this system is limited to larger buildings.
c. A system controller automatically starts a standby pump
b. Use of this system is limited to larger buildings.
in the event of pump failure
d. The system has a pressure regulator to maintain a
relatively constant pressure above the water level inside
the tank
The back flow prevention method consisting of two inde-
pendent check valves with an automatic operating pres-
sure ditterential relief valve located between them is
called:
c. Reduced pressure principle device
a. Air gap back flow prevention
b. Double check valve
c. Reduced pressure principle device
d. Atmosphere vacuum breaker
The NFPA Life Safety Code requires that emergency light-
ing be provided for means of exit in:
a. Places of assembly of less than 300 people
d. All educational occupancies
b. All rental properties
c. Oflce buildings with occupancies of 300 or more peo-
ple
d. All educational occupancies
Corrugations in outside aluminum storm water piping are
required to:
d. Permit expansion of the aluminum
a. Increase the flow of storm water
b. Decrease potential for blockage
Which of the following statements about a pressure relief
valve in a building hot water system is FALSE?
a. The valve may be installed anywhere in the hot water
system close to the heater or tank
b. The valve opens when system pressure exceeds the
d. The relief valve may be isolated from the vessel it serves
valve set point.
by means of a gate valve, for the purposes of maintenance
c. The valve closes automatically when the water pressure
drops below the valve set point
d. The relief valve may be isolated from the vessel it serves
by means of a gate valve, for the purposes of mainte-
nance.
Direct lighting systems:
a. Have a higher initial cost than indirect lighting
c. Are more energy eflcient than indirect lighting
b. Have greater glare control
c. Are more energy eflcient than indirect lighting
d. Produce shadow free light
maintenance. Which of the following statements about
building footing drains is FALSE?
a. Footing drains are installed to prevent ground water
from accumulating around building foundations.
d. Footing drains are only installed in wet climates.
b. Footing drains are used to reduce the hydrostatic pres-
sure on the walls below ground level.
c. The water collected by footing drains is directed to a
remote area or into a sump.
d. Footing drains are only installed in wet climates.
With regard to a constant pressure potable water system
that uses a pneumatic tank, which of the following state-
ments is FALSE?
, Power Engineering - 4B8 Practice Questions with Verified Answers
a. Water from the pump discharges into a pressurized
tank
b. Use of this system is limited to larger buildings.
c. A system controller automatically starts a standby pump
b. Use of this system is limited to larger buildings.
in the event of pump failure
d. The system has a pressure regulator to maintain a
relatively constant pressure above the water level inside
the tank
The back flow prevention method consisting of two inde-
pendent check valves with an automatic operating pres-
sure ditterential relief valve located between them is
called:
c. Reduced pressure principle device
a. Air gap back flow prevention
b. Double check valve
c. Reduced pressure principle device
d. Atmosphere vacuum breaker
The NFPA Life Safety Code requires that emergency light-
ing be provided for means of exit in:
a. Places of assembly of less than 300 people
d. All educational occupancies
b. All rental properties
c. Oflce buildings with occupancies of 300 or more peo-
ple
d. All educational occupancies
Corrugations in outside aluminum storm water piping are
required to:
d. Permit expansion of the aluminum
a. Increase the flow of storm water
b. Decrease potential for blockage
