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Test: Grit Chambers, Tanks And Vacuum Floatation - Civil Engineering (CE) MCQ


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9 Questions MCQ Test Environmental Engineering - Test: Grit Chambers, Tanks And Vacuum Floatation

Test: Grit Chambers, Tanks And Vacuum Floatation for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Grit Chambers, Tanks And Vacuum Floatation questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Grit Chambers, Tanks And Vacuum Floatation MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Grit Chambers, Tanks And Vacuum Floatation below.
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Test: Grit Chambers, Tanks And Vacuum Floatation - Question 1

The unit of dynamic viscosity is

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 1

Explanation: The dynamic viscosity is the ratio of shear stress to velocity gradient. Its unit is Pa * Sec.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 2

 Which of the following has minimum detention period?

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 2

Explanation: Grit chamber has a minimum detention period with a value of 40-60 seconds.

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Test: Grit Chambers, Tanks And Vacuum Floatation - Question 3

The relation between dynamic and kinematic viscosity is given by

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 3

Explanation: μ = v * ρ, μ = dynamic viscosity, v = kinematic viscosity and ρ = density of water.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 4

 The dimension formula of dynamic viscosity is 

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 4

Explanation: The dimension formula of dynamic viscosity is ML-1T-1 and it can be measured in kg m-1 s-1.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 5

The dimension formula of kinematic viscosity is 

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 5

Explanation: The dimension formula of kinematic viscosity = ML-1T-1 / ML-3 = L2 T-1.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 6

The coefficient of drag for a transition settling is

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 6

Explanation: When Reynolds number ‘R’ lies between 1 and 1000, the coefficient of drag CD is given by CD = 18.5/R0.6.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 7

In which of the following, large impurities are attached with air bubbles to remove it from the wastewater?

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 7

Explanation: In skimming tanks, large impurities are attached with air bubbles to decrease its density, they float in sewage and are finally removed by skimming troughs.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 8

Which of the following has minimum detention period?

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 8

Explanation: The skimming tank has a minimum detention period with a value of 3 minutes.

Test: Grit Chambers, Tanks And Vacuum Floatation - Question 9

The design velocity of flow of a detritus tank is

Detailed Solution for Test: Grit Chambers, Tanks And Vacuum Floatation - Question 9

Explanation: The detritus tanks are able to remove grit and sand particles by having a design velocity of 0.9m/Sec.

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