Book 2: 6-28 - "Types of Pumps"

Question 1

Some common rotary pumps included all of the following except:
Select one:

A. Lobe

B. External gear

C. Internal gear

D. Sliding vane

E. Centrifugal

Answer 1

E. Centrifugal

Question 2

Centrifugal pumps must be placed close to or below the surface of the liquid being pumped because:
Select one:

A. It makes them easier to prime

B. It makes them less apt to lose their prime

C. They have a low discharge pressure

D. It decreases the chance of “surging”

E. Of their inability to produce suction lift

Answer 2

E. Of their inability to produce suction lift

Question 3

The sum of static head and dynamic head is the:
Select one:

A. Static discharge head

B. Static suction lift

C. Total head

D. Static suction head

E. Total static head

Answer 3

C. Total head

Question 4

A sliding vane pump fits into the category:
Select one:

A. Positive displacement rotary

B. Dynamic mixed flow

C. Positive displacement lobe

D. Positive displacement gear

E. Dynamic centrifugal volute

Answer 4

A. Positive displacement rotary

Question 4

The distance, measured vertically, that the intake of the pump is placed above the surface of the water is referred to as:
Select one:

A. Total head

B. Static suction lift

C. Total static head

D. Static suction head

E. Static discharge head

Answer 4

B. Static suction lift

Question 5

The distance required to move the water from the source of supply to the point of discharge is referred to as:
Select one:

A. Static discharge head

B. Total head

C. Total static head

D. Static suction head

E. Static suction lift

Answer 5

B. Total head

Question 6

The external gear pump consists of all of the following except a/an:
Select one:

A. Pockets of liquid

B. Driving gear

C. Housing

D. Impeller

E. Idler gear

Answer 6

D. Impeller

Question 7

Reciprocating pumps are used for _____ applications.
Select one:

A. Low volume, high-temperature

B. Low volume, high-pressure

C. High volume, high-pressure

D. High volume, Low-temperature

E. Low volume, Low-pressure

Answer 7

B. Low volume, high-pressure

Question 8

The vertical distance from the surface of the source of supply to the surface of the water in the discharge tank is referred to as:
Select one:

A. Static discharge head

B. Total head

C. Total static head

D. Static suction head

E. Static suction lift

Answer 8

C. Total static head

Question 9

The sum of static suction lift plus static discharge head is the:
Select one:

A. Static suction lift

B. Static discharge head

C. Total head

D. Total static head

E. Static suction head

Answer 9

D. Total static head

Question 10

The sliding vane pump consists of all of the following except:
Select one:

A. A rotor

B. A rotor

C. An impeller

D. An eccentric casing

E. Sliding vanes

Answer 10

C. An impeller

Question 11

A pump is a mechanism that is used to _____ by imparting energy to the liquid being transferred.
Select one:

A. Transfer a fluid from one place to another

B. Develop a static suction pressure

C. Raise a fluid from a lower level to a higher level

D. Raise a fluid from a higher level to a lower level

E. Create a pressure differential only

Answer 11

A. Transfer a fluid from one place to another

Question 12

The distance from the free surface of the supply tank to the centre line of the pump is referred to as:
Select one:

A. Total static head

B. Static suction head

C. Static discharge head

D. Static suction lift

E. Total head

Answer 12

B. Static suction head

Question 13

A device used in a centrifugal pump to make the conversion from velocity to pressure more effective is the:
Select one:

A. Volute

B. Diffuser

C. Impeller

D. Wear ring

E. Eye

Answer 13

B. Diffuser

Question 14

Lobe pumps are similar in theory to _____ pumps.
Select one:

A. Dynamic

B. Volute

C. Plunger

D. Reciprocating

E. Gear

Answer 14

E. Gear

Question 15

Centrifugal pumps can be subdivided into the all of the following types except:
Select one:

A. Volute

B. Axial flow

C. Regenerative

D. Gear

E. Diffuser

Answer 15

D. Gear

Question 16

The area of the centrifugal pump where the velocity of the liquid discharged from the impeller is lowered and converted to pressure is an area of increasing cross-sectional area called the:
Select one:

A. Wear ring

B. Volute

C. Eye

D. Diffuser

E. Impeller

Answer 16

B. Volute

Question 17

Theoretically, the maximum lift of a pump at sea level is:
Select one:

A. 10.34 metre (33.9 ft)

B. 9.1 metre (29.8 ft)

C. 20.5 metre (67.2 ft)

D. 15.8 metre (51.8 ft)

E. 5.4 metre (17.7 ft)

Answer 17

A. 10.34 metre (33.9 ft)

Question 18

The vertical distance, in metres or in feet, from the centre line of the pump to the free surface of the water in the discharge tank is referred to as:
Select one:

A. Total head

B. Static discharge head

C. Total static head

D. Static suction lift

E. Static suction head

Answer 18

B. Static discharge head

Question 19

Two classifications of pumps are:
Select one:

A. Rotary and internal gear

B. Volute and diffuser

C. Rotary and external gear

D. Dynamic and positive displacement

E. Reciprocating and plunger

Answer 19

D. Dynamic and positive displacement