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Which of the following best describes a computer-based information system?
An information system consists of the hardware, software, data, people, and procedures that work together to produce quality information.
An information system consists of the hardware, software, data, people, and procedures that work together to produce quality information.
See lessThe term gigabyte refers to
The term gigabyte refers to 1024 megabytes. The gigabyte is a multiple of the unit byte for digital information. The prefix giga means 109 in the International System of Units (SI). Therefore, one gigabyte is 1000000000bytes. The unit symbol for the gigabyte is GB.
The term gigabyte refers to 1024 megabytes. The gigabyte is a multiple of the unit byte for digital information. The prefix giga means 109 in the International System of Units (SI). Therefore, one gigabyte is 1000000000bytes. The unit symbol for the gigabyte is GB.
See lessThe use of coarse screens for the disposal of sewage, may be dispensed with by
Screens are used to stop the flow of larger particles like paper, feces, garbage, leaves, etc. These are removed by raking and disposal is done by incineration as it may produce high calorific value. Flocculation: It is the process by which fine particulates are caused to clump together into a floc.
Screens are used to stop the flow of larger particles like paper, feces, garbage, leaves, etc. These are removed by raking and disposal is done by incineration as it may produce high calorific value. Flocculation: It is the process by which fine particulates are caused to clump together into a floc.
See lessThe first stage of neutral process of sludge digestion, is
The first stage in which fresh sewerage-sludge is acted upon by anaerobic and facultative bacteria's which decompose easily available food matters is acid fermentation
The first stage in which fresh sewerage-sludge is acted upon by anaerobic and facultative bacteria’s which decompose easily available food matters is acid fermentation
See lessDried sewage after treatment is used as
Microbes and human faeces settle down after the aerator tank and produce activated sludge. Sand drying beds or machines remove the water. Sludge that has been dried is utilized as manure, restoring organic matter and nutrients to the soil.
Microbes and human faeces settle down after the aerator tank and produce activated sludge. Sand drying beds or machines remove the water. Sludge that has been dried is utilized as manure, restoring organic matter and nutrients to the soil.
See lessLead acetate test in sewer manhole is done to test the presence of
Lead acetate test is a simple test that can be used to detect the presence of hydrogen sulfide gas. The test is performed by adding a few drops of lead acetate solution to a sample of the gas. If hydrogen sulfide is present, a black precipitate will form.
Lead acetate test is a simple test that can be used to detect the presence of hydrogen sulfide gas. The test is performed by adding a few drops of lead acetate solution to a sample of the gas. If hydrogen sulfide is present, a black precipitate will form.
See lessIf the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is
Diameter (mm) Gradient required to generate self-cleaning velocity Velocity generated in the sewer when running half full 100 1 in 60 0.58 m/sec 150 1 in 100 0.61 m/sec 225 1 in 120 0.79 m/sec
Diameter (mm) Gradient required to generate self-cleaning velocity Velocity generated in the sewer when running half full
See less100 1 in 60 0.58 m/sec
150 1 in 100 0.61 m/sec
225 1 in 120 0.79 m/sec
For large sewers, maximum distance between manholes may be
Size of Sewer Recommended spacing of manholes on straight reaches of sewer lines as per IS 1742:1960 Diameter up to 0.6 m 75 m Diameter up to 0.9 m 90 m Diameter up to 1.2 m 120 m Diameter up to 1.5 m 250 m
Size of Sewer Recommended spacing of manholes on straight reaches of sewer lines as per IS 1742:1960
See lessDiameter up to 0.6 m 75 m
Diameter up to 0.9 m 90 m
Diameter up to 1.2 m 120 m
Diameter up to 1.5 m 250 m
The average temperature of sewage in India, is
The normal temperature of sewage is generally slightly higher than the temperature of water. The average temperature of sewage in India is 20°C, which is ideal for biological activities.
The normal temperature of sewage is generally slightly higher than the temperature of water. The average temperature of sewage in India is 20°C, which is ideal for biological activities.
See lessThe sewer which resists sulphide corrosion, is
Explanation: Lead Sewers: (i) They are smooth, soft and can take odd shapes. (ii) This pipe has an ability to resist sulphide corrosion.
Explanation: Lead Sewers: (i) They are smooth, soft and can take odd shapes. (ii) This pipe has an ability to resist sulphide corrosion.
See less