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  • Question

  • Thermodynamic celcius scale of temperature measurement is


  • Options
  • A. defined on the basis of melting point of ice and evaporation temperature of water vapor.
  • B. defined on the basis of melting point of ice and condensation temperature of water vapor.
  • C. having an interval of 100° between ice point to steam point.
  • D. both (b) and (c)

  • Correct Answer
  • both (b) and (c) 

    • Process Control and Instrumentation problems

    Search Results

    • 1. What is the overall transfer function (C/R) of the following block diagram if G = G1. G2. G3 and H = H1.H2.

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. Configuration of Bourdon spring tube is never made of __________ shape.

    • Options
    • A. circular
    • B. semi-circular
    • C. helical
    • D. spiral
      • Discuss
    • 3. Working principle of disappearing filament type optical pyrometer is based on the

    • Options
    • A. Wien's law
    • B. Seebeck effect
    • C. Kirchoff's law
    • D. Peltier effect
      • Discuss
    • 4. In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

    • Options
    • A. outlet flow rate
    • B. level
    • C. both (a) & (b)
    • D. neither (a) nor (b)
      • Discuss
    • 5. __________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'.

    • Options
    • A. Celcius
    • B. Rankine
    • C. Reumur
    • D. Farenhite
      • Discuss
    • 6. The transfer function for an ideal proportional plus reset controller (reset time T) is

    • Options
    • A.
    • B. Kc(1 + TS)
    • C.
    • D.
      • Discuss
    • 7. Thermocouple in a thermal well behaves as a true

    • Options
    • A. first order system.
    • B. second order system (overdamped).
    • C. multiple first order system.
    • D. second order system (underdamped).
      • Discuss
    • 8. Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.

    • Options
    • A. Peltier
    • B. Thomson
    • C. Seebeck
    • D. none of these
      • Discuss
    • 9. 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)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 10. According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is

    • Options
    • A. 0°
    • B. 45°
    • C. 90°
    • D. 180°
      • Discuss

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