Texas Wastewater Class A Exam Full
Practice Questions and Detailed
Rationales Latest Update
• Carbon monoxide, (CO) poisoning symptoms are . Answer: tightness
in the chest, nausea, drowsiness ,and headache
• The smallest pipe size ,for air recirculation , of a self-priming
centrifugal pump is . Answer: 1 inch
• Dangerous gases in a confined space may not be detected with the
physical senses because . Answer: some gases have no odor some gases
may deaden the sense of smell some gases may displace the oxygen (all
of the above)
• On a construction job site, equipment booms must maintain at least
how many feet of clearance from overhead electric lines? . Answer: 10
• How should trench shoring be installed? . Answer: to above the top of
the trench
• When setting work goals for an employee, the goals should be .
Answer: accompanied by an action plan
,• According to Chapter 317, Design Criteria, a manhole can be installed
within 9 feet of an existing waterline if . Answer: the manhole is
completely watertight and tested for no leakage
• As the population of a collection system increases, the ratio of peak
flow to average daily flow will . Answer: decrease
• Motivating workers to do a better job is best done by . Answer: letting
workers participate in setting goals
• One important element of a good communicator is . Answer: being a
good listener
• Monitoring and reporting records of a wastewater treatment plant shall
be kept at the facility site for a period of . Answer: three years
• The TCEQ Design Criteria requires that deflection tests be performed
on all new installed flexible or semi-rigid pipe after the final backfill has
been in place for 30 days. This deflection test is usually performed using
a rigid ball or mandrel that has a diameter equal to -percent of the inside
diameter of the pipe. . Answer: 95
• When is blue-green algae the most dominant on a pond treatment
system? . Answer: Summer
• What is the purpose of biomonitoring of a plant's effluent? . Answer:
Test for toxicity
, • The management function of selecting and training employees of an
organization is called . Answer: staffing
• controlling When must TCEQ be notified about expansions of a
treatment facility? . Answer: Before construction
• In an anaerobic digester, the percentage of methane and carbon dioxide
gas content should be . Answer: 70% methane, 30% carbon dioxide
• The temperature of an anaerobic digester should be maintained at a
minimum of . Answer: 95° F
• What type of wastewater treatment operates in the endogenous bacteria
growth phase? . Answer: Extended air
• Why is recirculation needed in a trickling filter? . Answer: Keep the
media wet, Further reduce BOD, Flood the filter, to control ponding, and
filter flies
• What type of fire extinguisher would be used on an electrical control
panel that has been de-energized? . Answer: class a or class c
• The biomass on a normal functioning RBC has what appearance? .
Answer: Grey to brown and 0.05 to 0.1 inch thick
Practice Questions and Detailed
Rationales Latest Update
• Carbon monoxide, (CO) poisoning symptoms are . Answer: tightness
in the chest, nausea, drowsiness ,and headache
• The smallest pipe size ,for air recirculation , of a self-priming
centrifugal pump is . Answer: 1 inch
• Dangerous gases in a confined space may not be detected with the
physical senses because . Answer: some gases have no odor some gases
may deaden the sense of smell some gases may displace the oxygen (all
of the above)
• On a construction job site, equipment booms must maintain at least
how many feet of clearance from overhead electric lines? . Answer: 10
• How should trench shoring be installed? . Answer: to above the top of
the trench
• When setting work goals for an employee, the goals should be .
Answer: accompanied by an action plan
,• According to Chapter 317, Design Criteria, a manhole can be installed
within 9 feet of an existing waterline if . Answer: the manhole is
completely watertight and tested for no leakage
• As the population of a collection system increases, the ratio of peak
flow to average daily flow will . Answer: decrease
• Motivating workers to do a better job is best done by . Answer: letting
workers participate in setting goals
• One important element of a good communicator is . Answer: being a
good listener
• Monitoring and reporting records of a wastewater treatment plant shall
be kept at the facility site for a period of . Answer: three years
• The TCEQ Design Criteria requires that deflection tests be performed
on all new installed flexible or semi-rigid pipe after the final backfill has
been in place for 30 days. This deflection test is usually performed using
a rigid ball or mandrel that has a diameter equal to -percent of the inside
diameter of the pipe. . Answer: 95
• When is blue-green algae the most dominant on a pond treatment
system? . Answer: Summer
• What is the purpose of biomonitoring of a plant's effluent? . Answer:
Test for toxicity
, • The management function of selecting and training employees of an
organization is called . Answer: staffing
• controlling When must TCEQ be notified about expansions of a
treatment facility? . Answer: Before construction
• In an anaerobic digester, the percentage of methane and carbon dioxide
gas content should be . Answer: 70% methane, 30% carbon dioxide
• The temperature of an anaerobic digester should be maintained at a
minimum of . Answer: 95° F
• What type of wastewater treatment operates in the endogenous bacteria
growth phase? . Answer: Extended air
• Why is recirculation needed in a trickling filter? . Answer: Keep the
media wet, Further reduce BOD, Flood the filter, to control ponding, and
filter flies
• What type of fire extinguisher would be used on an electrical control
panel that has been de-energized? . Answer: class a or class c
• The biomass on a normal functioning RBC has what appearance? .
Answer: Grey to brown and 0.05 to 0.1 inch thick
