Virtual Labs

1. Liquid flow rate is measured using,

a: Orifice Plate Explanation

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b: Pirani Gauge Explanation

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c: Pyrometer Explanation

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d: Bourdon Tube Explanation

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2. Orifices are used to measure

a: Velocity Explanation

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b: Rate of flow Explanation

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c: Pressure Explanation

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d: None of these Explanation

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3. Bernoulli’s Equation is a mathematical expression of ______

a: The ratio of kinetic to viscous forces in a flow stream Explanation

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b: Potential and kinetic energies in a flow stream Explanation

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c: Fluid density and compressibility in a restriction Explanation

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d: Vertical height and pressure for a static fluid Explanation

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4. For a linear time invariant system, an optimal controller can be designed if _____

a: The system is controllable and observable Explanation

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b: The system is uncontrollable but stable Explanation

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c: The system is unstable but observable Explanation

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d: The system is stable but unobservable Explanation

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5. The function of the proportional mode is to ____________?

a: Provide Gain Explanation

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b: Eliminate Offsets Explanation

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c: To speed up the response and minimize the overshoot Explanation

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d: All of the above Explanation

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6. The function of the proportional plus integral mode is to ____________?

a: Provide Gain Explanation

Explanation

b: Eliminate Offsets Explanation

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c: To speed up the response and minimize the overshoot Explanation

Explanation

d: All of the above Explanation

Explanation

7. The feed forward control system ________

a: Cannot make corrections until a measurable error exists Explanation

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b: Is theoretically capable of perfect control Explanation

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c: Makes a change in output that is the integrated error Explanation

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d: Requires little knowledge of the process before installation Explanation

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8. Which of the following statements is correct?

a: By properly designing the PI controller, it is possible to make the transient response to a step input exhibit relatively small or no overshoot. Explanation

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b: The PI controller is a lag compensator. Explanation

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c: The characteristic of the PI controller is infinite gain at zero frequency. Explanation

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d: All of the above Explanation

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9. In a single tank system, the transfer function of __________ to inlet flow rate is 1/TS+1.

a: Level Explanation

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b: Outlet flow rate Explanation

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c: Both of the above Explanation

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d: None of the above Explanation

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10. __________ controller has the maximum stabilising time.

a: P Explanation

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b: PI Explanation

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c: PID Explanation

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d: PD Explanation

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Two Tank Water Level Control