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Test: Aerated Grit Chambers - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Environmental Engineering - Test: Aerated Grit Chambers

Test: Aerated Grit Chambers for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Aerated Grit Chambers questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Aerated Grit Chambers MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Aerated Grit Chambers below.
Solutions of Test: Aerated Grit Chambers questions in English are available as part of our Environmental Engineering for Civil Engineering (CE) & Test: Aerated Grit Chambers solutions in Hindi for Environmental Engineering course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt Test: Aerated Grit Chambers | 10 questions in 30 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study Environmental Engineering for Civil Engineering (CE) Exam | Download free PDF with solutions
Test: Aerated Grit Chambers - Question 1

At what velocity will the particles settle down?

Detailed Solution for Test: Aerated Grit Chambers - Question 1

The design of a horizontal flow type is such that as wastewater flows through in horizontal direction at a certain velocity (0.3m/s) particles will start to settle at the channel before reaching the outlet point.

Test: Aerated Grit Chambers - Question 2

A grit chamber is usually installed ______ primary sedimentation tanks.

Detailed Solution for Test: Aerated Grit Chambers - Question 2

A grit chamber is usually installed before primary sedimentation tanks and it is sensible to say that it should be placed well before wastewater pumps. There are basically three different types of grit chambers.

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Test: Aerated Grit Chambers - Question 3

What is the cleaning period for manual grit chambers?

Detailed Solution for Test: Aerated Grit Chambers - Question 3

Manually cleaned grit chambers should be cleaned at least once a week. The simplest method of cleaning is by means of shovel. The grit washing mechanisms are also of several designs most of which are agitation devices using either water or air to produce washing action.

Test: Aerated Grit Chambers - Question 4

Grit chambers are constructed to prevent their accumulation in _______

Detailed Solution for Test: Aerated Grit Chambers - Question 4

Grit chamber is needed to protect major mechanical equipment from wear and tear including and remove the inorganic particles to prevent damage to the pumps and to prevent their accumulation in sludge digesters.

Test: Aerated Grit Chambers - Question 5

What is the specific gravity of settleable particles in the grit chamber?

Detailed Solution for Test: Aerated Grit Chambers - Question 5

The specific gravity of heavier particles is 2.65. Grit chambers are nothing but like sedimentation tanks, designed to separate the intended heavier inorganic materials (specific gravity about 2.65) and to pass forward the lighter organic materials.

Test: Aerated Grit Chambers - Question 6

Grit chamber is similar to which of the following?

Detailed Solution for Test: Aerated Grit Chambers - Question 6

Sedimentation tanks and grit chambers are similar, designed to separate the intended heavier inorganic materials (specific gravity about 2.65) and to pass forward the lighter organic materials.

Test: Aerated Grit Chambers - Question 7

What is the horizontal velocity considered for grit chamber?

Detailed Solution for Test: Aerated Grit Chambers - Question 7

The horizontal velocity considered while designing a grit chamber is 0.25-0.4m/sec. In most cases, it is considered as 0.3 m/sec. The setting velocity for the removal of 21mm material is 1-1.3m/ sec.

Test: Aerated Grit Chambers - Question 8

Stoke’s law holds good for Reynolds’s number ______

Detailed Solution for Test: Aerated Grit Chambers - Question 8

The settling velocity of discrete particles can be determined using an appropriate equation depending upon Reynolds number. Stoke’s law holds good for Reynolds number, Re below 1.

Test: Aerated Grit Chambers - Question 9

Grit chambers of a sewage plant are usually changed after

Test: Aerated Grit Chambers - Question 10

A velocity control device has to be provided in a

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