Virtual Labs

Study and operation of the Process Trainer setup

1. In distributed systems the transportation delays are detrimental to stability due to which of the following reasons ?

a: They produce transients Explanation

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b: They produce attenuation Explanation

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c: They produce a phase lag Explanation

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d: None of the above Explanation

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2. Losses in a centrifugal compressor are due to _____

a: Inlet losses Explanation

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b: Impeller channel losses Explanation

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c: Diffuser losses Explanation

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d: All of the above Explanation

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3. Which type of blower is preferred for fluid bed reactor ?

a: Centrifugal blower Explanation

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b: Positive displacement blower Explanation

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c: Regenerative blower Explanation

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d: Helical screw blower Explanation

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4. The position and velocity errors of a type-2 system are

a: Constant, Constant Explanation

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b: Constant, Infinity Explanation

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c: Zero, Constant Explanation

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d: Zero, Zero Explanation

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5. The characteristics of the PI controller is _____ gain at ______ frequency.

a: Infinite, Zero Explanation

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b: Zero, High Explanation

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c: Zero, Low Explanation

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d: Zero, Infinite Explanation

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6. The term hysteresis is associated with

a: ON-OFF control Explanation

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b: P-control Explanation

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c: PI-control Explanation

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d: PID-control Explanation

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7. In a closed loop control system, PI controller is preferred compared to P controller cause,

a: Fast response Explanation

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b: High gains Explanation

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c: Zero steady state error Explanation

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d: Low overshoot Explanation

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8. The controller ,which is highly sensitive to noice is,

a: PI Controller Explanation

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b: PD Controller Explanation

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c: ON-OFF Controller Explanation

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d: Integral control action Explanation

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9. Which of the following is created by blowers?

a: Air flow Explanation

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b: Water flow Explanation

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c: Wastewater flow Explanation

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d: Any fluid flow Explanation

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10. What is the purpose of the blowers?

a: Decrease air flow Explanation

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b: Increase air flow Explanation

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c: Create Vacuum Explanation

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d: Increase fluid flow Explanation

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