Related Questions

For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as
A 4.5 to 6.0
B 6.5 to 8.0
C 8.5 to 10.0
D 10.5 to 12.0
For normal sludge, the value of sludge index for Indian conditions is
A 0 to 50
B 50 to 150
C 150 to 350
D 350 to 500
Applying a pressure drop across a capillary results in a volumetric flow rate 'Q' under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is
A $$\frac{{\text{Q}}}{2}$$
B $$\frac{{\text{Q}}}{4}$$
C $$\frac{{\text{Q}}}{8}$$
D $$\frac{{\text{Q}}}{{16}}$$
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a
A Magnetic flowmeter
B Pitot tube
C Flow nozzle type flowmeter
D Turbine flowmeter
Liquid flow rate in an open channel can not be measured by a/an
A Orifice meter
B Cipolletti weir
C Rectangular weir
D V-notch
The rate of accumulation of sludge in septic tanks is recommended as
A 30 litres/person/year
B 25 litres/person/year
C 30 litres/person/month
D 25 litres/person/month
The rate of accumulation of sludge per person per year, is
A 10 litres
B 15 litres
C 20 litres
D 25 litres
To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)
A Increase both 'G' and 'S'
B Decrease both 'G' and 'S'
C Increase 'S' and decrease 'G'
D Increase 'G' and decrease 'S'
Flow rate of a river is measured by a/an
A Pitot tube
B Vane meter
C Kennison nozzle
D Open weir
Liquid flow rate in a small channel is best measured by a/an
A Weir
B Pitot tube
C Vane meter
D Venturimeter

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