The term analogous to the electrical current in a thermal system is the_________________?

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. Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in ____________ in the electrical resistance of the wire ?

   A. No change
   B. Decrease
   C. Increase
   D. Exponential decrease

3. Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion ?

   A. Nickel
   B. Brass
   C. Chromel
   D. Invar

4. With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer ?

   A. Increases
   B. Decreases
   C. Remain constant
   D. Increases exponentially

5. A pyrheliometer is an instrument used for measuring the_________________?

   A. Bright sunshine period
   B. Beam radiation
   C. Diffuse radiation
   D. None of these

6. Composition of natural gas is determined by the_________________?

   A. Haldane apparatus
   B. Mass spectrometer
   C. Chromatograph
   D. Both B. and C.

7. Gain margin is equal to the_________________?

   A. Amplitude ratio
   B. Reciprocal of amplitude ratio
   C. Gain in P controller
   D. Gain in P-I controller

8. Continuous measurement of moisture content of paper in paper industry is done by measuring the_________________?

   A. Thermal conductivity through the paper
   B. Electrical resistance through the paper
   C. Magnetic susceptibility
   D. None of these

9. In a second order under damped system, the_________________?

   A. Time required for the response of first reach its ultimate value is called the response time
   B. Overshoot (which is a measure of how much the response exceeds the ultimate value) increase
   with the decrease of damping co-efficient
   C. Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of
   overshoot
   D. None of these

10. The term analogous to voltage in a single tank system is the_______________?

    A. Heat content of the system
    B. Liquid volume in the tank
    C. Flow rate
    D. Level of liquid