The operation of a Rotameter is based on ________________?

Related Mcqs:

1. Working principle of disappearing filament type optical pyrometer is based on the ________________?

   A. Wien’s law
   B. Seebeck effect
   C. Kirchoff’s law
   D. Peltier effect

2. Working principle of radiation pyrometer is based on the ________________?

   A. Wien’s law
   B. Kirchoff’s law
   C. Stefan-Boltzmann law
   D. Seebeck effect

3. Working principle of mercury in glass thermometer is based on the ______________ of mercury with increase in temperature?

   A. Increase of pressure
   B. Increase of thermal conductivity
   C. Volumetric expansion
   D. Differential linear expansion

4. Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change ?

   A. Water
   B. Mercury
   C. Methyl alcohol
   D. Carbon-tetrachloride

5. 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

6. Working principle of radiation pyrometer is based on the __________________?

   A. Wien’s law
   B. Kirchoff’s law
   C. Stefan Boltzmann law
   D. Seebeck effect

7. Gas chromatography is used for the measurement of ________________?

   A. Temperature
   B. Pressure
   C. Concentration
   D. Flow rate

8. 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

9. Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an ________________?

   A. Venturimeter
   B. Orificemeter
   C. Magnetic flow meter
   D. Hot wire anemometer

10. Liquid levels in autoclaves are measured by ________________?

    A. Simple float
    B. Differential float type manometer
    C. Glass gauge
    D. None of these