3B2 Chapter 13-15 Review Questions With Complete
Solutions
_____ are essential parts of the burner safety management
system.
a. Low Water Fuel Cutoffs.
b. Flame Scanners.
c. Flame Igniters.
d. Gas Burner Nozzles.
e. Fuel Pressure Gages. Correct Answers b
_____ is/are mixed with the effluent of the wastewater heater to
help breakdown the organic materials in the flow.
a. Activated sludge.
b. Activated chemicals.
c. Oils.
d. Polishing chemicals.
e. Steam. Correct Answers a
_____ particles are so small that they will not settle at the
bottom
or float to the top.
a. Angström.
b. Colloidal.
c. Activated sludge.
d. Barminutor.
e. Grit. Correct Answers b
A common tool used in general alignment work is a:
a. Hammer
b. Level
,c. Micrometer
d. Dial indicator
e. All of the above. Correct Answers d
A Eutectic salt solution used as a heat transfer medium in an
indirect heater is a mixture of:
a. Sodium nitrate and magnesium nitrate.
b. Calcium nitrate and magnesium nitrate.
c. Sodium nitrate and calcium nitrate.
d. Sodium nitrite and potassium nitrate.
e. Calcium nitrate and potassium nitrate. Correct Answers d
A fan is driven through a set of V belts that contain 5 belts. The
belts are 16 months old when the second belt from the outside of
the sheave breaks. You should:
a. Replace the broken belt with a new one and use belt dressing
on the old one
b. Continue to operate with the four remaining belts, applying a
good quality belt dressing
c. Replace the complete set of belts with a new set
d. Replace the drive assembly with a chain drive
e. Replace both the outside belt and the broken one. Correct
Answers c
A feeler gauge is used:
1. To check for angular alignment
2. To check for parallel alignment
3. To take readings at three places on the coupling faces
4. To give more accurate readings than a straight edge when
aligning couplings
a. 1, 3, 4
,b. 2, 3, 4
c. 2, 3
d. 1, 2, 4
e. 2, 4. Correct Answers d
A key ingredient that will help it to operate effectively and
efficiently is:
a. Effective communications.
b. Written communication.
c. Spoken communication.
d. Visual communication.
e. A good telephone system. Correct Answers a
A machine operating with vibration above the safe limits should
be immediately reported to the:
a. Supervisor
b. Safety committee
c. Workers, Compensation Board
d. Manufacturer
e. Plant manager. Correct Answers a
A plant section holds one months effluent from the whole plant.
This is?
a. Clarifier .
b. Aeration.
c. Stabilization.
d. Flare pit.
e. Oil water separation. Correct Answers c
A rotating biological contactor rotates at:
a. 1 to 2 rev/min.
, b. 3 to 5 rev/min.
c. 5 to 10 rev/min.
d. 10 to 20 rev/min.
e. Over 20 rev/min. Correct Answers a
A rotating biological contactors main purpose is to reduce the
_____
of the wastewater.
a. Temperature value.
b. Turbidity.
c. Toxicity.
d. Biochemical oxygen demand value.
e. pH value. Correct Answers d
A rotating trash screen used in a wastewater treatment plant is
also called a:
a. Comminuter.
b. Compactor .
c. Constrictor.
d. Accumulater.
e. Barminutor. Correct Answers e
A rough check of the belt tension can be made by:
a. Measuring the distance between the upper and lower loop of
the belt
b. Measuring the distance between the center line of the sheaves
and the bottom of the belt loop
c. Measuring total belt wobble on the lower loop while in
operation
d. Striking the belt with your fist
e. Striking the belt with a rubber mallet. Correct Answers d
Solutions
_____ are essential parts of the burner safety management
system.
a. Low Water Fuel Cutoffs.
b. Flame Scanners.
c. Flame Igniters.
d. Gas Burner Nozzles.
e. Fuel Pressure Gages. Correct Answers b
_____ is/are mixed with the effluent of the wastewater heater to
help breakdown the organic materials in the flow.
a. Activated sludge.
b. Activated chemicals.
c. Oils.
d. Polishing chemicals.
e. Steam. Correct Answers a
_____ particles are so small that they will not settle at the
bottom
or float to the top.
a. Angström.
b. Colloidal.
c. Activated sludge.
d. Barminutor.
e. Grit. Correct Answers b
A common tool used in general alignment work is a:
a. Hammer
b. Level
,c. Micrometer
d. Dial indicator
e. All of the above. Correct Answers d
A Eutectic salt solution used as a heat transfer medium in an
indirect heater is a mixture of:
a. Sodium nitrate and magnesium nitrate.
b. Calcium nitrate and magnesium nitrate.
c. Sodium nitrate and calcium nitrate.
d. Sodium nitrite and potassium nitrate.
e. Calcium nitrate and potassium nitrate. Correct Answers d
A fan is driven through a set of V belts that contain 5 belts. The
belts are 16 months old when the second belt from the outside of
the sheave breaks. You should:
a. Replace the broken belt with a new one and use belt dressing
on the old one
b. Continue to operate with the four remaining belts, applying a
good quality belt dressing
c. Replace the complete set of belts with a new set
d. Replace the drive assembly with a chain drive
e. Replace both the outside belt and the broken one. Correct
Answers c
A feeler gauge is used:
1. To check for angular alignment
2. To check for parallel alignment
3. To take readings at three places on the coupling faces
4. To give more accurate readings than a straight edge when
aligning couplings
a. 1, 3, 4
,b. 2, 3, 4
c. 2, 3
d. 1, 2, 4
e. 2, 4. Correct Answers d
A key ingredient that will help it to operate effectively and
efficiently is:
a. Effective communications.
b. Written communication.
c. Spoken communication.
d. Visual communication.
e. A good telephone system. Correct Answers a
A machine operating with vibration above the safe limits should
be immediately reported to the:
a. Supervisor
b. Safety committee
c. Workers, Compensation Board
d. Manufacturer
e. Plant manager. Correct Answers a
A plant section holds one months effluent from the whole plant.
This is?
a. Clarifier .
b. Aeration.
c. Stabilization.
d. Flare pit.
e. Oil water separation. Correct Answers c
A rotating biological contactor rotates at:
a. 1 to 2 rev/min.
, b. 3 to 5 rev/min.
c. 5 to 10 rev/min.
d. 10 to 20 rev/min.
e. Over 20 rev/min. Correct Answers a
A rotating biological contactors main purpose is to reduce the
_____
of the wastewater.
a. Temperature value.
b. Turbidity.
c. Toxicity.
d. Biochemical oxygen demand value.
e. pH value. Correct Answers d
A rotating trash screen used in a wastewater treatment plant is
also called a:
a. Comminuter.
b. Compactor .
c. Constrictor.
d. Accumulater.
e. Barminutor. Correct Answers e
A rough check of the belt tension can be made by:
a. Measuring the distance between the upper and lower loop of
the belt
b. Measuring the distance between the center line of the sheaves
and the bottom of the belt loop
c. Measuring total belt wobble on the lower loop while in
operation
d. Striking the belt with your fist
e. Striking the belt with a rubber mallet. Correct Answers d
