Eet Practice Exam Word Problem

Question 1

Which of the following is true of a normally consolidated clay?

Answer 1

It will not settle further under present loading conditions (settlement will occur with increased load)

Question 2

For Saturated soil “S” =

Answer 2

1 for 100% saturated

Question 3

Converting an area from natural grassland to paved parking lot without stormwater detention facilities would change the time of concentration and runoff. The correct statement in this situation is:

Answer 3

Decrease TC increase Q

Question 4

For which of the following case use of calcium chloride may be beneficial:

Answer 4

Concrete cast in cold weather

Question 5

During concrete mix design, the amount of calculated water was increased to reach the required workability (slump). Which of the following modification is most probably needed to preserve required concrete strength?

Answer 5

Addition of cement amount

Question 6

Mass diagram

Answer 6

Question 7

Wastewater treatment primary clarifiers are designed to have a detention time of about

Answer 7

1.5 - 3 hours

Question 8

Answer 8

Question 9

Answer 9

Question 10

The chemical compounds usually contribute to wastewater odor are:

Answer 10

Nitrogen and sulfur

Question 11

The coagulant alum reacts with natural alkalinity in water forming:

Answer 11

Aluminum hydroxide

Question 12

The degradation of biomass coming from aquatic organic matter

Answer 12

Decreases dissolved oxygen

Question 13

The quantity of dissolved oxygen found in water is a function of

Answer 13

PH, temperature, and salinity

Question 14

Stratification of a lake occurs during the following seasons:

Answer 14

Summer and winter

Question 15

What two ions are responsible for nutrient enrichment?

Answer 15

Nitrate and phosphate

Question 16

Recarbonation is

Answer 16

Adding bicarbonate to the water

Question 17

The available net positive suction head needs to be sufficient to prevent cavitation. Which of the following will reduce tendency for cavitation if the intake is lower than pump?

Answer 17

Lowering pump elevation &
Increasing the suction pipe diameter

Question 18

P49

Answer 18

Question 19

Which profile allows forming a hydraulic jump? (Yc = critical depth & yn = normal depth

Answer 19

Question 20

If the froude number before and after jumps are fr1 & fr2, respectively, which of the following must be a true relation?

Answer 20

Fr1 > fr2

Question 21

Answer 21

South

Question 22

Answer 22

Figure B

Question 23

Answer 23

Question 24

Which of the following is a reason for eutrophication?

Answer 24

Question 25

Water treatment plant has options to choose the filter material for filtration operation. Sort the following filter media based on efficiency:

Answer 25

Conventional
Dual filter
Mixed filter

Question 26

Membrane fouling is measured using:

Answer 26

Silt density index testing

Question 27

Which of the following are potential treatment methods to remove taste and odor?

Answer 27

Adsorption
Potassium permanganate
Oxidation
Ozone

Question 28

13

Answer 28

Question 29

55

Answer 29

Question 30

22

Answer 30

Storage coefficient (C)

Question 31

24

Answer 31

Question 32

78

Answer 32

Question 33

74

Answer 33

Question 34

Answer 34

Question 35

The quantity of dissolved oxygen in water is a function of:

Answer 35

Temperature, pressure, salinity

Question 36

Carbonate hardness =

Answer 36

Min(alkalinity, total hardness)