Process Control and Instrumentation Quiz 1

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Process Control and Instrumentation Quiz 1

1 / 50

Bode stability method uses _____ loop transfer function?

2 / 50

A pyrheliometer is an instrument used for measuring the__________?

3 / 50

An aneroid barometer measures the ______ pressure?

4 / 50

Change of angle of refraction with composition comprises the working principle of a_____?

5 / 50

Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an_____?

6 / 50

Bode diagram are generated from output response of the system subjected to which of the following input ?

7 / 50

A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if_________?

8 / 50

A first order system with unity gain and time constant ? is subjected to a sinusoidal input of frequency w = 1/?. The amplitude ratio for this system is_______?

9 / 50

A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in________?

10 / 50

A manometer measures the ______ pressure?

11 / 50

A system with a double pole at the origin is unstable since the corresponding term in the time domain_________?

12 / 50

Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?

13 / 50

A non-linear system will have ______ steady state values?

14 / 50

An amplitude ratio of 0.1 corresponds to ______ decibels?

15 / 50

A typical example of a physical system with under damped characteristic is a______?

16 / 50

Bimetal strips are not used in_________?

17 / 50

_______ controller has the maximum stabilising time?

18 / 50

A simple pitot tube measures the_____?

19 / 50

A stable system is the one_____?

20 / 50

All the thermocouples used for temperature measurement use dissimilar metal _________?

21 / 50

_____ is the static characteristics of an instrument?

22 / 50

A mercury barometer measures the ______ pressure?

23 / 50

A pyranometer is an instrument used for measuring the_____?

24 / 50

Characteristic equation is the denominator of _____ loop transfer function?

25 / 50

A barometer measures the ______ pressure?

26 / 50

A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same__________?

27 / 50

A constant volume gas thermometer employing _______ is used to measure sub-zero (i.e., < 0?C) temperature?

28 / 50

A sinusoidal variation in the input passing through a linear first order system __________?

29 / 50

A system with transfer function [(2S/4S) + 1] is of ______ order?

30 / 50

A non-linear chemical system is exemplified by a/an__________?

31 / 50

According to Bode stability criterion, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is__________?

32 / 50

Configuration of Bourdon spring tube is never made of ______ shape?

33 / 50

A first order system with a time constant of 1 min is subjected to frequency response analysis. At an input frequency of 1 radian/min, the phase shift is_______?

34 / 50

Compositional analysis of _______ is done using mass spectrometer?

35 / 50

A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is ______ ?C?

36 / 50

_____ stability method uses open loop transfer function?

37 / 50

Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic ?

38 / 50

_____ are analysed using a Polarograph?

39 / 50

Composition of alloys can be determined by __________?

40 / 50

______ is an example of distributed parameter system ?

41 / 50

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

42 / 50

A negative gain margin expressed in decibels means a/an _____ system?

43 / 50

________ thermometer cannot measure sub-zero (< 0? C) temperature ?

44 / 50

Cascade control means ________?

45 / 50

A magnetic flowmeter is__________?

46 / 50

Concentration of sugar solution can be determined by the___________?

47 / 50

Composition of natural gas is determined by the__________?

48 / 50

_______ is undesirable in thermocouples used in industries ?

49 / 50

Bourdon tube is never made of_________?

50 / 50

A bolometer is ___________?

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