Florida Water Treatment Class C
Water Operator Actual Exam Study
Questions with Expert Graded A+
Answers
1. if the pump impeller is running backwards, what action must be taken to
correct the rotation? - ANSWER switch any two electrical leads
2. Which of the following is a type of pump that is commonly used in a water
treatment plant? - ANSWER Centrifugal
3. What is a multi-staged pump? - ANSWER has more than one impeller
4. What is an Ampere? - ANSWER a unit of measurement for current
5. If a motor fails to start, what should be checked first? - ANSWER Power
supply
6. Opening or closing a valve rapidly will cause? - ANSWER water hammer
7. The formation and collapse of a gas pocket or bubble on the blade of an
impeller is called? - ANSWER cavitation
8. Changing the packing on a pump is called ________ maintenance -
ANSWER corrective
,9. what is an example of a daily maintenance task for a compressor? -
ANSWER drain the air receiver
10.what type of valve is usually used to control the rate of flow? - ANSWER
globe valve
11.what type of valve is buried? - ANSWER non-rising stem
12.what is the most common valve type used in a water treatment plant? -
ANSWER gate valve
13.what will happen if the gate valve is left half open to control flow? -
ANSWER Undue seat wear
14.In what manner should carbon be stored? - ANSWER on concrete floor in
single rows
15.what is brinelling? - ANSWER a type of bearing wear
16.what is the recommended manner for storing potassium permanganate? -
ANSWER on a concrete floor away from heat or heated pipes
17.what causes more damage to a pump's impeller? - ANSWER Air
18.What is the unit of electrical resistance? - ANSWER Ohm
,19.What is an ammeter - ANSWER measures amps and current
20.what type of electrical service is usually found in water plants? - ANSWER
three phase
21.Generally, all motors over two HP require what type of electrical service? -
ANSWER 3 phase
22.Before starting work on any electrical equipment, you must first ____? -
ANSWER Lock out tag out
23.What unit is used to measure the rate of power Consumption? - ANSWER
Kilowatts
24.When should the packing of a pump be adjusted? - ANSWER when the
pump is running
25.when a pump fails to deliver at its rated capacity, what is most likely the
cause? - ANSWER air leak
26.what is a common cause for vibrations in a motor? - ANSWER
misalignment of the couplings
27.What is the purpose of the wear rings in a pump? - ANSWER Plug internal
leakage
28.what should the seal water pressure be for a pump? - ANSWER 5 psi higher
than the pumps discharge pressure
, 29.what is the purpose of the seal water? - ANSWER block out air intake and
lubricate the packing
30.what is the recommended maximum suction lift? - ANSWER 15 ft.
31.In a water treatment plant, what type of pump is commonly used to deliver
chemical solutions? - ANSWER Positive displacement
32.when should you lubricate your equipment? - ANSWER follow the
manufacturer's recommendations
33.In what manner is packing installed? - ANSWER a strip at a time and
staggered
34.a positive displacement pump should never be operated________? -
ANSWER against a closed discharge valve
35.if two of more pumps of the same size and purpose are online, what method
of operation is recommended for them? - ANSWER alternate to equalize
wear
36.If half of the mechanical seal fails, what corrective action should be taken? -
ANSWER change both halves of the seal
37.what is the purpose of a lantern ring? - ANSWER water seal
Water Operator Actual Exam Study
Questions with Expert Graded A+
Answers
1. if the pump impeller is running backwards, what action must be taken to
correct the rotation? - ANSWER switch any two electrical leads
2. Which of the following is a type of pump that is commonly used in a water
treatment plant? - ANSWER Centrifugal
3. What is a multi-staged pump? - ANSWER has more than one impeller
4. What is an Ampere? - ANSWER a unit of measurement for current
5. If a motor fails to start, what should be checked first? - ANSWER Power
supply
6. Opening or closing a valve rapidly will cause? - ANSWER water hammer
7. The formation and collapse of a gas pocket or bubble on the blade of an
impeller is called? - ANSWER cavitation
8. Changing the packing on a pump is called ________ maintenance -
ANSWER corrective
,9. what is an example of a daily maintenance task for a compressor? -
ANSWER drain the air receiver
10.what type of valve is usually used to control the rate of flow? - ANSWER
globe valve
11.what type of valve is buried? - ANSWER non-rising stem
12.what is the most common valve type used in a water treatment plant? -
ANSWER gate valve
13.what will happen if the gate valve is left half open to control flow? -
ANSWER Undue seat wear
14.In what manner should carbon be stored? - ANSWER on concrete floor in
single rows
15.what is brinelling? - ANSWER a type of bearing wear
16.what is the recommended manner for storing potassium permanganate? -
ANSWER on a concrete floor away from heat or heated pipes
17.what causes more damage to a pump's impeller? - ANSWER Air
18.What is the unit of electrical resistance? - ANSWER Ohm
,19.What is an ammeter - ANSWER measures amps and current
20.what type of electrical service is usually found in water plants? - ANSWER
three phase
21.Generally, all motors over two HP require what type of electrical service? -
ANSWER 3 phase
22.Before starting work on any electrical equipment, you must first ____? -
ANSWER Lock out tag out
23.What unit is used to measure the rate of power Consumption? - ANSWER
Kilowatts
24.When should the packing of a pump be adjusted? - ANSWER when the
pump is running
25.when a pump fails to deliver at its rated capacity, what is most likely the
cause? - ANSWER air leak
26.what is a common cause for vibrations in a motor? - ANSWER
misalignment of the couplings
27.What is the purpose of the wear rings in a pump? - ANSWER Plug internal
leakage
28.what should the seal water pressure be for a pump? - ANSWER 5 psi higher
than the pumps discharge pressure
, 29.what is the purpose of the seal water? - ANSWER block out air intake and
lubricate the packing
30.what is the recommended maximum suction lift? - ANSWER 15 ft.
31.In a water treatment plant, what type of pump is commonly used to deliver
chemical solutions? - ANSWER Positive displacement
32.when should you lubricate your equipment? - ANSWER follow the
manufacturer's recommendations
33.In what manner is packing installed? - ANSWER a strip at a time and
staggered
34.a positive displacement pump should never be operated________? -
ANSWER against a closed discharge valve
35.if two of more pumps of the same size and purpose are online, what method
of operation is recommended for them? - ANSWER alternate to equalize
wear
36.If half of the mechanical seal fails, what corrective action should be taken? -
ANSWER change both halves of the seal
37.what is the purpose of a lantern ring? - ANSWER water seal
