For hypersonic flow, the Mach number is___________________?

Byadmin January 23, 2019August 15, 2021

For hypersonic flow, the Mach number is___________________?

A. unity
B. greater than unity
C. greater than 2
D. greater than 4
E. greater than 10

Civil Engineering Mcqs | Waste Water Engineering

A circular sewer section is preferred to because__________________?

A circular sewer section is preferred to because__________________?

A. It is cheaper in construction
B. It provides maximum area for a given perimeter
C. It provides maximum hydraulic mean depth
D. All the above

Read More A circular sewer section is preferred to because__________________?
CHEMICAL ENGINEERING | Fluid Mechanics

Interstage coolers are provided in a multistage compressor to

Question: Interstage coolers are provided in a multistage compressor to
[A].

save power in compressing a given volume to a given pressure.
[B].
cool the delivered air.
[C].
achieve the exact delivery pressure.
[D].
none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Interstage coolers are provided in a multistage compressor to
Civil Engineering Mcqs | Waste Water Engineering

For a continuous flow type of sedimentation tanks__________________?

For a continuous flow type of sedimentation tanks__________________?

A. Width of the tank is normally kept about 6 m
B. Length of the tank is normally kept 4 to 5 times the width
C. Maximum horizontal flow velocity is limited to 0.3 m/minute
D. All the above

Read More For a continuous flow type of sedimentation tanks__________________?
Civil Engineering Mcqs | Waste Water Engineering

If the grit in grit chambers is 4.5 million litres per day, its cleaning is done____________________?

If the grit in grit chambers is 4.5 million litres per day, its cleaning is done____________________?

A. Manually
B. Mechanically
C. Hydraulically
D. Electrically

Read More If the grit in grit chambers is 4.5 million litres per day, its cleaning is done____________________?
CHEMICAL ENGINEERING | Fluid Mechanics

In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.

Question: In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
[A].

directly proportional to
[B].
inversely proportional to
[C].
inversely proportional to the square root of
[D].
independent of

Answer: Option B

Explanation:

No answer description available for this question.

Read More In the Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass is __________ the fluid viscosity.
Civil Engineering Mcqs | Waste Water Engineering

3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is______________________?

3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is______________________?

A. 100 mg/l
B. 200 mg/l
C. 300 mg/l
D. 400 mg/l

Read More 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is______________________?

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