Wt3 Part One And Two

Front 1

The flow or current in an electrical Circuit is measured as.

Back 1

Amps

Front 2

Infiltration and inflow must be controlled to Prevent.

Back 2

Hydraulic overloads

Front 3

Which of the following is a primary indicator of bearing failure.

Back 3

Noise coming from pump.

Front 4

The valve most often used for flow control is.

Back 4

Globe Valve

Front 5

When describing a particular gas LEL stands for.

Back 5

Lower explosive limit

Front 6

Collection systems gases that have a specific gravity greater than 10 are

Back 6

Heavier than air

Front 7

With pressure sensing controllers such as the bubbler system a blockage in the airline would.

Back 7

Signal the pump to run and result in lower than normal wet well levels.

Front 8

Pumps connected in series increase

Back 8

Pressure

Front 9

Cavitation is caused by.

Back 9

Is sufficient NPSH

Front 10

The pressure that a pump must operate against is measure in.

Back 10

Psi

Front 11

The primary purpose of check Valves is to prevent.

Back 11

Water from flowing in Two directions.

Front 12

If only two rings of packing are used in the stuffing box, at how many degrees should the joints be staggered.

Back 12

90 to 180 degrees

Front 13

The zone of influence is defined as

Back 13

The distance from a wedwell that the cone of depression affects the normal water level.

Front 14

What type of pump is most often used by public water systems.

Back 14

Velocity

Front 15

When a portable water supply used to provide clean water to water seals on pumps, the connection should be made with a________ to portable water supply.

Back 15

Vacuum breaker

Front 16

What happens to a pump? If the back pressure on the pump is allowed to drop too low and the pump is operated for a prolonged period of time.

Back 16

Efficiency will drop off and the pump will heat up.

Front 17

The part of the chlorine cylinder to melt at 150 to 165°F to prevent a cylinder from exploding in the event of fire is.

Back 17

The Fusible plug

Front 18

Coagulation occurs during the first.

Back 18

1 to 5 Seconds

Front 19

Which of the following should be the safety action to take in the event of a major chlorine leak.

Back 19

Call the fire department

Front 20

When non portable water is connected directly to a portable water system, the minimum acceptable method of eliminating the cross connection is.

Back 20

An air gap between two systems or a reduced pressure zone device.

Front 21

A hypochlorinator is used to.

Back 21

Feed liquid chlorine solution into a water supply.

Front 22

One ton chlorine tanks have.

Back 22

Fusible plugs located at the valves

Front 23

When litmus paper is immersed in acid solution, the paper turns.

Back 23

Red

Front 24

Which of the following is not Typical of a submersible pump.

Back 24

Requires water lubrication

Front 25

What health risk is associated with nitrate in water.

Back 25

methemoglobinemia

Front 26

Which of the following best defines the term drawdown.

Back 26

A changing water elevation from the normal level to the pumping level.

Front 27

Which of the following is likely to cause a decreasing drawdown and unchanging static water level.

Back 27

Pump is losing efficiency.

Front 28

If a pump has excessive internal leakage, the operator should check.

Back 28

The wear ring

Front 29

The metal strip in an electrical fuse will melt from the heat caused by.

Back 29

High amperage

Front 30

What is pressure head caused by.

Back 30

Water elevation.

Front 31

Exhaust from a chlorinatal room should be taken from.

Back 31

The floor level

Front 32

Before repairing a pump's electrical circuit, which of the following actions should you take.

Back 32

Disconnect the secret breaker. Place the red tag stating " Do not activate " and lock out.

Front 33

How often should a seal ball bearing in an electrical motor be Lubricated.

Back 33

Never

Front 34

Maintenance required of bubbler. Two level indicators includes checking the.

Back 34

Air tube

Front 35

Which valve is most suitable for a throttling application.

Back 35

Ball Valve

Front 36

Flexible couplings used to connect the motor to the pump shaft transmit.

Back 36

Power efficiency and effectively from one shaft to the other.

Front 37

Cavitation in pumps is caused by pumping.

Back 37

Flow rate considerably higher than design flows.

Front 38

What type of pump is a reciprocating pump.

Back 38

Positive displacement

Front 39

The principal purpose of an altitude valve on an elevated tank is to.

Back 39

Control maximum filling level in the distribution storage

Front 40

What is the most probable cause of a pinging sound coming from a pump.

Back 40

Cavitation

Front 41

Centrifugal, positive displacement And turbine are all.

Back 41

Types of Pumps

Front 42

A mechanical ventilation system for the wet well portion of a lift station should be able to exchange the air in a wetwell a minimum of____ Times per hour.

Back 42

12

Front 43

Vortexing is likely to occur.

Back 43

If the wet well level is too low and or the pump flow rate is too high.

Front 44

Throughout a link to discharge valve on a centrifugal pump will result..

Back 44

An increased head pressure, lower flow rates and decreased Amperage draw.

Front 45

Reciprocating positive displacement pumps are also known as.

Back 45

Piston pumps

Front 46

What information must be on a warning tag attached to a switch that has been locked out.

Back 46

Signature of a person who locked out the switch. And who is the only person out the rise to remove the tag.

Front 47

What type of pump has high efficiencies, 0 to 95% at very high pressure, impellers that are very close fitting and high maintenance cost.

Back 47

Vertical turbine

Front 48

What is the primary purpose of well grouting

Back 48

Prevent surface water contamination from entering the water that is being drawn into the well.

Front 49

Which of the following best defines the term static water level.

Back 49

Water level in a Well, when the well is not in operation.

Front 50

Which of the following valves can be used to control pressure.

Back 50

Globe valve

Front 51

Using water on gas chlorine leak wil

Back 51

Make the leak worse

Front 52

If the Amperage drawn by a centrifugal pump is lower than what is normal for that pump, one possible cause is.

Back 52

A close valve on the discharge side of the pump

Front 53

What type of Motor's rotor requires no windings and has Low starting torque.

Back 53

Split phase

Front 54

If a pump loses prime after starting, this may be caused by.

Back 54

Suction problems

Front 55

Which of the following substances posed an immediate health threat whenever standards are exceeded.

Back 55

Coliform and nitrate.

Front 56

Which of the following is a measure of a material's opposition to the flow of electric current.

Back 56

ohms

Front 57

If the speed of a centrifugal pump is increased and the head remains the same, the gallons per minute output will.

Back 57

Increase

Front 58

The mayor difference between dynamic head and static head is.

Back 58

Friction head.

Front 59

Proper protection against exposure to toxic acids, bases And other hazardous liquids can be best done with.

Back 59

Proper boots and gloves.

Front 60

When the oxygen contact level is__________it can be fatal.

Back 60

Below 10%

Front 61

As the wet well level Rises, the effect on the pump is.

Back 61

The net positive suction head available increases.

Front 62

Muddy water and increased flow during rainfall Are symptoms of.

Back 62

Infiltration

Front 63

A co-worker has just passed out. You should first.

Back 63

Check for breathing and heartbeat

Front 64

Death from an electrical shock can occur with amperage as low as.

Back 64

33 miliamps

Front 65

Bacteria, viruses or cysts that can cause a disease are called.

Back 65

Pathogens

Front 66

A man hole has an oxygen level of 17%. This will be considered.

Back 66

Oxygen deficient

Front 67

A gasoline driven air ventilator located close to a confined working area can create an atmospheric hazard due to

Back 67

Carbon monoxide generation

Front 68

After initial full service operation, greased lubrication bearings should be regreased at what frequency.

Back 68

3 to 6 months

Front 69

What prevents any solution or water from backing up into the chlorine line.

Back 69

Check valve

Front 70

Packing should be replaced when tightening the _________ no longer controls the leakage.

Back 70

Packing gland.

Front 71

Mechanical seals are more appropriate for pumps operating under which of the following conditions.

Back 71

High Suction head

Front 72

Pump seals can be classified as.

Back 72

Balanced or unbalanced

Front 73

A chlorine gas mask should be provided.

Back 73

in close proximity to, but outside of the chlorine room door.

Front 74

At a pumping station equipped with centrifugal pumps. What caused the discharge pressure to suddenly increase and discharge quantity to suddenly decrease.

Back 74

A discharge valve was closed

A discharge valve was closed

Front 75

When a fire hydrant is operated, it should be.

Back 75

Open fully.

Front 76

One measure of an efficient manager is.

Back 76

Few employee grievances.

Front 77

To sample for ph you should collect

Back 77

A grab sample