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  • Question

  • The experimental response of the controlled variable y(t) for a step change of magnitude P in the manipulated variable x(t) is shown below :
    The experimental response of the controlled variable y(t) for a step change of magnitude P in the ma
    The appropriate transfer function of the process is


  • Options
  • A. The experimental response of the controlled variable y(t) for a step change of magnitude P in the ma
  • B. The experimental response of the controlled variable y(t) for a step change of magnitude P in the ma
  • C. The experimental response of the controlled variable y(t) for a step change of magnitude P in the ma
  • D. The experimental response of the controlled variable y(t) for a step change of magnitude P in the ma

  • Correct Answer
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    • More questions

    • 1. The minimum baffle height should be

    • Options
    • A. equal to the impeller diameter.
    • B. twice the impeller diameter.
    • C. twice the tank diameter.
    • D. 3/4 of the tank height.
      • Discuss
    • 2. Which of the following sugars is the sweetest?

    • Options
    • A. Glucose
    • B. Fructose
    • C. Sucrose
    • D. Lactose
      • Discuss
    • 3. Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.

    • Options
    • A. 50-80
    • B. 250-400
    • C. 1000-1200
    • D. 800-900
      • Discuss
    • 4. Most commonly used joint in the underground pipe lines is the

    • Options
    • A. sleevejoint
    • B. coupling
    • C. flange
    • D. expansion joint
      • Discuss
    • 5. Which of the following is not a measure component necessarily to be present in fertilisers?

    • Options
    • A. Nitrogen
    • B. Potassium
    • C. Phosphorous
    • D. Sulphur
      • Discuss
    • 6. Wind load consideration in the design of a support can be neglected, when the vessel is

    • Options
    • A. tall (say 30 metres), but is full of liquid.
    • B. tall but empty.
    • C. short (< 2 m) and housed indoor.
    • D. none of these.
      • Discuss
    • 7. The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is

    • Options
    • A. H2O > C2H5OH > CS2
    • B. CS2 > C2H5OH > H2O
    • C. H2O > CS2 > C2H5OH
    • D. CS2 > H2O > C2H5OH
      • Discuss
    • 8. In the design of a shell and tube heat exchanger, the corrosion allowance

    • Options
    • A. need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc.
    • B. for carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm.
    • C. for internal cover and tube sheet is provided on both the sides.
    • D. all (a), (b) & (c).
      • Discuss
    • 9. For an ideal gas, the compressibility factor

    • Options
    • A. decreases with pressure rise.
    • B. is unity at all temperature.
    • C. is unity at Boyle's temperature.
    • D. zero.
      • Discuss
    • 10. If the discharge of a centrifugal pump is throttled, then its suction lift

    • Options
    • A. increases
    • B. decreases
    • C. remains unchanged
    • D. data insufficient to predict
      • Discuss

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