CWEA Mechanical Technologist BOARD
Assessment Questions
and Answers Verified Solutions Latest
Update
Question:
Which component must always be replaced when connecting a new chlorine cylinder?
Answer:
Fiber washer.
Question:
What is the purpose of a low-pressure check valve on an anaerobic digester?
Answer:
To prevent air from being drawn into the gas piping by a vacuum condition in the
digester.
Question:
What are the typical settings for the pressure relief valve on an anaerobic digester?
Answer:
They should be lower than the setting for the cover mounted pressure and vacuum
relief valve.
Question:
What is a parshall flume used to measure?
Answer:
Liquid flows in an open channel.
,Question:
What is the formula for absolute pressure with regards to gauge pressure?
Answer:
Absolute pressure = gauge pressure + atmospheric pressure.
Question:
How much more water will a 6-inch diameter pipe carry compared to a 3-inch diameter
pipe?
Answer:
Four times as much.
Question:
What does the design of a flame trap aim to accomplish?
Answer:
It limits the distance a flashback can travel in the gas line.
Question:
What sort of rigging should be used to lift an object with sharp edges at contact points?
Answer:
A chain.
Question:
During a rigging operation, if the weight of an object is not known, how should the
qualified rigger obtain said weight?
Answer:
By estimation.
Question:
You are asked to replace a long fluorescent bulb in the administrative building-where
should you place the burnt out bulb while you install the new one?
Answer:
On your work cart.
,Question:
Small bypass valves are often furnished around large gate valves for what purpose?
Answer:
To balance the pressure on both sides of the gate when it is being opened.
Question:
What tool trues, cleans, and shapes a grinding wheel?
Answer:
A wheel dresser.
Question:
What is a thread chaser used for?
Answer:
Repairing damaged threads.
Question:
What is the primary reason you should never lift or carry an electric hand tool, such as
a drill, by its service cord?
Answer:
The cord might be pulled off its terminals and become short circuited.
Question:
Fluids can be moved through pipes raised to higher elevations, or stored under
pressure through the use of what?
Answer:
Pumps.
Question:
Maintenance problems in pumping systems are usually caused by the pump, but also
can be the result of improper ________.
Answer:
Piping.
, Question:
What is the most common type of pumping system in industrial plants?
Answer:
Water system.
Question:
If a large amount of hot water is required in one specific area, what sort of distribution
system is the best choice?
Answer:
Dead-end distribution system.
Question:
In what sort of system is unused hot water reheated along with cooler incoming water?
Answer:
Recirculating system.
Question:
Applications in which chemicals must be metered or pumped under high pressure
require high-powered _________ pumps.
Answer:
Positive displacement.
Question:
Chemical handling arrangements are determined by the plant ___________ and the
requirements of the particular ___________.
Answer:
Layout, application.
Question:
Insulated piping systems are necessary for piping chemical products, ____________, and
____________ in an industrial plant.
Answer:
Hot water, steam.
Assessment Questions
and Answers Verified Solutions Latest
Update
Question:
Which component must always be replaced when connecting a new chlorine cylinder?
Answer:
Fiber washer.
Question:
What is the purpose of a low-pressure check valve on an anaerobic digester?
Answer:
To prevent air from being drawn into the gas piping by a vacuum condition in the
digester.
Question:
What are the typical settings for the pressure relief valve on an anaerobic digester?
Answer:
They should be lower than the setting for the cover mounted pressure and vacuum
relief valve.
Question:
What is a parshall flume used to measure?
Answer:
Liquid flows in an open channel.
,Question:
What is the formula for absolute pressure with regards to gauge pressure?
Answer:
Absolute pressure = gauge pressure + atmospheric pressure.
Question:
How much more water will a 6-inch diameter pipe carry compared to a 3-inch diameter
pipe?
Answer:
Four times as much.
Question:
What does the design of a flame trap aim to accomplish?
Answer:
It limits the distance a flashback can travel in the gas line.
Question:
What sort of rigging should be used to lift an object with sharp edges at contact points?
Answer:
A chain.
Question:
During a rigging operation, if the weight of an object is not known, how should the
qualified rigger obtain said weight?
Answer:
By estimation.
Question:
You are asked to replace a long fluorescent bulb in the administrative building-where
should you place the burnt out bulb while you install the new one?
Answer:
On your work cart.
,Question:
Small bypass valves are often furnished around large gate valves for what purpose?
Answer:
To balance the pressure on both sides of the gate when it is being opened.
Question:
What tool trues, cleans, and shapes a grinding wheel?
Answer:
A wheel dresser.
Question:
What is a thread chaser used for?
Answer:
Repairing damaged threads.
Question:
What is the primary reason you should never lift or carry an electric hand tool, such as
a drill, by its service cord?
Answer:
The cord might be pulled off its terminals and become short circuited.
Question:
Fluids can be moved through pipes raised to higher elevations, or stored under
pressure through the use of what?
Answer:
Pumps.
Question:
Maintenance problems in pumping systems are usually caused by the pump, but also
can be the result of improper ________.
Answer:
Piping.
, Question:
What is the most common type of pumping system in industrial plants?
Answer:
Water system.
Question:
If a large amount of hot water is required in one specific area, what sort of distribution
system is the best choice?
Answer:
Dead-end distribution system.
Question:
In what sort of system is unused hot water reheated along with cooler incoming water?
Answer:
Recirculating system.
Question:
Applications in which chemicals must be metered or pumped under high pressure
require high-powered _________ pumps.
Answer:
Positive displacement.
Question:
Chemical handling arrangements are determined by the plant ___________ and the
requirements of the particular ___________.
Answer:
Layout, application.
Question:
Insulated piping systems are necessary for piping chemical products, ____________, and
____________ in an industrial plant.
Answer:
Hot water, steam.
