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Process Control and Instrumentation Quiz 2

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Process Control and Instrumentation Quiz 2

1 / 50

Emission spectroscopy is used for___________?

2 / 50

Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1) ?

3 / 50

If response of a control system is to be free of offset and oscillation, the most suitable controller is__________?

4 / 50

In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit___________?

5 / 50

Gain margin is equal to the__________?

6 / 50

Feed forward controller accounts for the _______ changes?

7 / 50

Flow rate of a river is measured by a/an______?

8 / 50

Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a _________?

9 / 50

Gas analysis is commonly done using the_____?

10 / 50

Emf generated in a thermocouple depends on the temperature _____?

11 / 50

Flame photometry is used for the determination of compositional analysis of________?

12 / 50

In a single tank system, the transfer function of ______ to inlet flow rate is 1/(TS+1)?

13 / 50

E.m.f. generated by thermocouples is of the order of _________?

14 / 50

For measuring the temperature of a red hot furnace, which is the most suitable instrument ?

15 / 50

In Bode plot, A.R. vs. w is plotted on a/an ______ graph paper?

16 / 50

In a shell and tube heat exchanger, the flow rate of heating/cooling fluid is the _______ variable?

17 / 50

Emf developed by a thermocouple while measuring a temperature of 800?C is about 31 mV. The type of thermocouple used is_________?

18 / 50

Flow rate measurement of hostile acids and alkalis can be most suitably done by a/an _________?

19 / 50

Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a ___________?

20 / 50

For a feed back control system to be stable, the __________?

21 / 50

Emf developed by a thermocouple while measuring a temperature of 400?C is 22 mV. The type of thermocouple used is _____?

22 / 50

For an input forcing function, X(t) = 2t2, the Laplace transform of this function is_________?

23 / 50

Helium gas constant volume thermometer is suitable for the measurement of a temperature of _______ ?C?

24 / 50

Dead zone is the___________?

25 / 50

For the time domain function f(t) = t, the Laplace transform of ?0 t f(t) dt is given by_____?

26 / 50

For two non-interacting first order systems connected in series, the overall transfer function is the _______ of the individual transfer functions?

27 / 50

Dome temperature of blast furnace stove is most accurately measured by a______?

28 / 50

In an exothermic chemical reactor, the manipulated variable is the flow rate of________?

29 / 50

Flow rate through an orifice is ______ the pressure differential?

30 / 50

Hot wire anemometer is used for the measurement of_____?

31 / 50

Continuous measurement of moisture content of paper in paper industry is done by measuring the__________?

32 / 50

Continuous measurement of moisture in paper is done by________?

33 / 50

In a second order under damped system, the__________?

34 / 50

Gas chromatography is used for the measurement of _________?

35 / 50

Dilute wine was used as a thermometric liquid initially to develop temperature scale. First empirical temperature scale developed was the ______ scale?

36 / 50

Continuous measurement of specific gravity of a liquid is done by ___________?

37 / 50

In a single tank system, the transfer function of level to inlet flow rate is___________?

38 / 50

Degree to which an instrument indicates the changes in measured variable without dynamic error is called its _____?

39 / 50

High temperature of around 2000?C of incandescent gas mantles is measured by a/an ___________?

40 / 50

Flow rate of sludge is not measured by a/an__________?

41 / 50

In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the ______ variable?

42 / 50

For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a___________?

43 / 50

In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is______?

44 / 50

Conversion formula for converting amplitude ratio (AR) into decibels is _________?

45 / 50

Humidity of air can be determined by a___________?

46 / 50

Emf developed by a thermocouple, while measuring a temperature of 600?C is about 5.5 mV. The type of thermocouple used is________?

47 / 50

Dilatometer is used to measure ___________?

48 / 50

Flapper nozzle is used in a/an _______ controller?

49 / 50

Identify an unbounded input from inputs whose transfer functions are given below_______?

50 / 50

In a shell and tube heat exchanger, the inlet temperature of heating/cooling fluid is the _____ variable?

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