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  • Question

  • Find the Laplace transform of the following input function shown in figure.
    Find the Laplace transform of the following input function shown in figure.


  • Options
  • A. Find the Laplace transform of the following input function shown in figure.
  • B. Find the Laplace transform of the following input function shown in figure.
  • C. Find the Laplace transform of the following input function shown in figure.
  • D. Find the Laplace transform of the following input function shown in figure.

  • Correct Answer
  •  

    • Process Control and Instrumentation problems

    Search Results

    • 1. A first order system with unity gain and time constant ? is subjected to a sinusoidal input of frequency w = 1/?. The amplitude ratio for this system is

    • Options
    • A. 1
    • B. 0.5
    • C. 1/2
    • D. 0.25
      • Discuss
    • 2. For the time domain function f(t) = t, the Laplace transform of is given by

    • Options
    • A. 1/2 S3
    • B. 2/S3
    • C. 1/S3
    • D. 2/S2
      • Discuss
    • 3. The frequency at which maximum amplitude ratio is attained is called the __________ frequency.

    • Options
    • A. corner
    • B. resonant
    • C. cross-over
    • D. natural
      • Discuss
    • 4. Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by

    • Options
    • A. filling nitrogen under pressure in the stem.
    • B. increasing the diameter of the tube.
    • C. using steel tube in place of glass tube.
    • D. accounting for the tube expansion.
      • Discuss
    • 5. Temperature of __________ can not be measured by an optical or radiation pyrometer.

    • Options
    • A. hot blast (air) from stoves
    • B. molten slag flowing out of blast furnace
    • C. combustion space in boilers
    • D. rotary limestone calcination kiln
      • Discuss
    • 6. Change of angle of refraction with composition comprises the working principle of a

    • Options
    • A. polarimeter
    • B. polarograph
    • C. spectrometer
    • D. refractrometer
      • Discuss
    • 7. The thermal emf-temperature relationship of most thermocouples is

    • Options
    • A. linear
    • B. parabolic
    • C. exponential
    • D. square root
      • Discuss
    • 8. A system with transfer function is of __________ order.

    • Options
    • A. zero
    • B. 1st
    • C. 2nd
    • D. 3rd
      • Discuss
    • 9. If response of a control system is to be free of offset and oscillation, the most suitable controller is

    • Options
    • A. proportional controller.
    • B. proportional-derivative(PD)controller.
    • C. proportional-integral (PI) controller.
    • D. proportional integral-derivative (PID) controller.
      • Discuss
    • 10. Conversion formula for converting amplitude ratio (AR) into decibels is

    • Options
    • A. Decibel = 20 log10 (AR)
    • B. Decibel = 20 loge (AR)
    • C. Decibel = 20 log10 (AR)0.5
    • D. Decibel = 20 loge (AR)0.5
      • Discuss

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