Smoke density of the flue gas going out of the chimney is measured by a __________________?

Related Mcqs:

1. Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity ?

   A. CO2
   B. N2
   C. O2
   D. CO

2. High temperature of around 2000°C of incandescent gas mantles is measured by a/an __________________?

   A. Specially designed thermocouple
   B. Optical pyrometer
   C. Radiation pyrometer
   D. None of these

3. Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an___________________?

   A. Orsat apparatus
   B. Thermal conductivity cell
   C. Zirconia probe
   D. Chromatograph

4. Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic ?

   A. CO2
   B. O2
   C. NO
   D. NO2

5. 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

6. Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant) ?

   A. V/nRT
   B. nRT/V
   C. nRT/P
   D. P/nRT

7. Liquid flow rate in an open channel cannot be measured by a/an __________________?

   A. Orifice meter
   B. Cipolletti weir
   C. Rectangular weir
   D. V-notch

8. Specific gravity of a liquid cannot be measured by a/an __________________?

   A. Anemometer
   B. Specific gravity bottle
   C. Pycnometer
   D. Hydrometer

9. Liquid discharge from a tank or reservoir cannot be measured by __________________?

   A. Orificemeter
   B. Weirs
   C. Mouthpieces
   D. Notches

10. Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is __________________?

    A. Water
    B. Carbon tetrachloride
    C. Paraffin
    D. Ethylene glycol