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Process Control and Instrumentation Quiz 1

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Process Control and Instrumentation Quiz 1

1 / 50

An aneroid barometer measures the ______ pressure?

2 / 50

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

3 / 50

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

4 / 50

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

5 / 50

An amplitude ratio of 0.1 corresponds to ______ decibels?

6 / 50

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

7 / 50

A manometer measures the ______ pressure?

8 / 50

A stable system is the one_____?

9 / 50

A magnetic flowmeter is__________?

10 / 50

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

11 / 50

A pyrheliometer is an instrument used for measuring the__________?

12 / 50

Cascade control means ________?

13 / 50

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

14 / 50

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

15 / 50

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

16 / 50

______ is an example of distributed parameter system ?

17 / 50

Characteristic equation is the denominator of _____ loop transfer function?

18 / 50

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

19 / 50

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

20 / 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?

21 / 50

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

22 / 50

A pyranometer is an instrument used for measuring the_____?

23 / 50

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

24 / 50

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

25 / 50

Composition of alloys can be determined by __________?

26 / 50

Bourdon tube is never made of_________?

27 / 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__________?

28 / 50

_____ stability method uses open loop transfer function?

29 / 50

Concentration of sugar solution can be determined by the___________?

30 / 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_______?

31 / 50

A bolometer is ___________?

32 / 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 ?

33 / 50

Composition of natural gas is determined by the__________?

34 / 50

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

35 / 50

Bode stability method uses _____ loop transfer function?

36 / 50

Bimetal strips are not used in_________?

37 / 50

A mercury barometer measures the ______ pressure?

38 / 50

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

39 / 50

_____ are analysed using a Polarograph?

40 / 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________?

41 / 50

_______ controller has the maximum stabilising time?

42 / 50

A barometer measures the ______ pressure?

43 / 50

A simple pitot tube measures the_____?

44 / 50

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

45 / 50

_______ is undesirable in thermocouples used in industries ?

46 / 50

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

47 / 50

Compositional analysis of _______ is done using mass spectrometer?

48 / 50

_____ is the static characteristics of an instrument?

49 / 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_______?

50 / 50

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

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