Question 1

Which CWA program controls water pollution by regulating point sources?&#10;A)spcc&#10;B)pcc&#10;C)npdes&#10;D)pda

Accepted Answer

The National Pollutant Discharge Elimination System (NPDES) is the program under the Clean Water Act (CWA) that controls water pollution by regulating point sources that discharge pollutants into waters of the United States.

Question 2

Which CWA program manages non-point source pollution?&#10;A)npsmp&#10;B)nsppp&#10;C)nsgop&#10;D)npsra

Accepted Answer

The correct choice is A) npsmp, which stands for Nonpoint Source Management Program. This program is specifically designed to manage non-point source pollution, addressing pollution that comes from diffuse sources rather than from a single, identifiable source.

Question 3

The design period of storage reservoir can be given as________&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#10;A)50 yr&#10;B)20 yr&#10;C)30 yr&#10;D)10 yr

Accepted Answer

The design period of a storage reservoir is typically considered to be 50 years to ensure long-term reliability and sustainability of water supply.

Question 4

Which material is used for pipes which are in contact with milk or product?&#10;A)stainless steel&#10;B)copper&#10;C)ceramic&#10;D)plastic

Accepted Answer

Stainless steel is widely used for pipes in contact with milk or dairy products due to its corrosion resistance, ease of cleaning, and ability to maintain product purity by not leaching into the product.

Question 5

Which material is used for pipes which conduct water and air?&#10;A)stainless steel&#10;B)copper&#10;C)ceramic&#10;D)plastic

Accepted Answer

The answer of Which material is used for pipes which...

Question 6

Which material is used for pipes which conduct waste?&#10;A)stainless steel&#10;B)copper&#10;C)ceramic&#10;D)plastic

Accepted Answer

The answer of Which material is used for pipes which...

Question 7

Which of the following are installed in order to collect product samples hygienically for quality analysis?&#10;A)bends&#10;B)reducers&#10;C)sampling device&#10;D)tees

Accepted Answer

Sampling devices are specifically designed and installed in systems to collect product samples in a hygienic manner for quality analysis, ensuring that the sample is representative of the product and not contaminated during the sampling process.

Question 8

Which among the following is not a permanent wielding connection?&#10;A)bends&#10;B)reducers&#10;C)sampling device&#10;D)tees

Accepted Answer

Sampling devices are not considered permanent welding connections because they are typically designed to be removable or detachable for the purpose of taking samples from the flow within a pipeline or system, unlike bends, reducers, and tees which are permanently welded to join or redirect the piping system.

Question 9

Calculate area of a pipe if, flow rate is 20 l/min and flow velocity is 5 cm/s. A)66.66 cm² B)60 cm² C)62 cm² D)64 cm²

Accepted Answer

The area of the pipe can be calculated using the formula for flow rate: $Q = A \times v$, where $Q$ is the flow rate, $A$ is the area, and $v$ is the velocity. First, convert the flow rate from liters per minute to cubic centimeters per second: $20 \, \text{l/min} = 20000 \, \text{cm}^3/\text{min} = \frac{20000}{60} \, \text{cm}^3/\text{s} = 333.33 \, \text{cm}^3/\text{s}$. Then, solve for $A$: $A = \frac{Q}{v} = \frac{333.33 \, \text{cm}^3/\text{s}}{5 \, \text{cm/s}} = 66.66 \, \text{cm}^2$.

Question 10

Which among the following is shut-off and change over valve?&#10;A)seat valve&#10;B)butterfly valve&#10;C)seat valve and butterfly valve&#10;D)bend

Accepted Answer

Seat valves and butterfly valves can both function as shut-off and change-over valves, allowing for the control of flow direction and the complete stoppage of flow when necessary.

Question 11

To prevent the product flow in the wrong direction which of the following valve is used?&#10;A)seat valve&#10;B)butterfly valve&#10;C)seat valve and butterfly valve&#10;D)check valve

Accepted Answer

The answer of To prevent the product flow in the...

Question 12

The pipes will expand considerably when the product temperatures are high and during cleaning.

Accepted Answer

The answer of The pipes will expand considerably when the...

Question 13

Valves with constant outlet pressure are used after which of the following machines?&#10;A)separator&#10;B)pasteurizer&#10;C)homogenizer&#10;D)filling machine

Accepted Answer

The answer of Valves with constant outlet pressure are used...

Question 14

What is the total loss developed in a series of pipes?&#10;A)sum of losses in each pipe only&#10;B)sum of local losses only&#10;C)sum of local losses plus the losses in each pipe&#10;D)zero

Accepted Answer

The answer of What is the total loss developed in...

Question 15

The total head loss for the system is equal to&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#10;A)pipe length&#10;B)pipe diameter&#10;C)width of the reservoir&#10;D)height difference of reservoirs

Accepted Answer

The answer of The total head loss for the system...

Question 16

Which among the following is not a loss that is developed in the pipe?&#10;A)entry&#10;B)exit&#10;C)connection between two pipes&#10;D)liquid velocity

Accepted Answer

The answer of Which among the following is not a...

Question 17

How do we determine the total discharge through parallel pipes?&#10;A)add them.&#10;B)subtract them&#10;C)multiply them&#10;D)divide them

Accepted Answer

The answer of How do we determine the total discharge...

Question 18

The pipe diameter is________&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#10;A)directly proportional to fluid density&#10;B)directly proportional to mass flow rate&#10;C)inversely proportional to mass flow rate&#10;D)directly proportional to fluid velocity

Accepted Answer

The answer of The pipe diameter is________&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#10;A)directly proportional to fluid...

Question 19

Define Viscosity.&#10;A)resistance to flow of object&#10;B)resistance to flow of air&#10;C)resistance to flow of fluid&#10;D)resistance to flow of heat

Accepted Answer

The answer of Define Viscosity.&#10;A)resistance to flow of object&#10;B)resistance to...

Question 20

Coefficient of friction of a laminar flow is&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#10;A)re/16&#10;B)re/64&#10;C)16/re&#10;D)64/re

Accepted Answer

The answer of Coefficient of friction of a laminar flow...

Deck 3: Water and Pipe Regulations