Cascade control means _______________?

Related Mcqs:

1. Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?

   A. Tank 1 B. Tank 2 C. Tank 3 D. Tank 4...

2. Positioning controllers are used for _______________?

   A. Low loads B. Temperature changes C. High loads D. Flow rate changes...

3. Process degree of freedom indicates _______________ number of controllers to be used?

   A. The maximum B. The minimum C. Both maximum and the minimum D. Nothing about the...

4. _______________ thermometer cannot measure sub-zero (< 0° C) temperature ?

   A. Mercury in glass B. Bimetallic C. Vapor pressure D. Resistance...

5. The function of a transducer is to _______________ ?

   A. Modify the input signal B. Amplify the input signal C. Convert the primary signal into a more useful quantity, usually an electric impulse D. Codify/decodify the input signal...

6. “A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

   A. Bode stability B. Nyquist C. Routh stability D. None of these...

7. A negative gain margin expressed in decibels means a/an ____________ system?

   A. Stable B. Unstable C. Critically damped D. None of these...

8. The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since______________?

   A. The function is exponential B. The Laplace transform of integral of exp(at) has finite values only for s > a C. The Laplace transform integral of exp(at) has initial values only for s > a D. The function exp(at) is piece-wise continuous only for s > a...

9. Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by _____________ effect?

   A. Peltier B. Thomson C. Seebeck D. None of these...

10. The transfer function of a second order system is _____________________?

    A. 1/(T2s2 + 2ξTs + 1) B. 1/(T2s2 + 2Ts + 1) C. 1/(T2s2 + 2ξT + 1) D. None of these...