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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