Process Control and Instrumentation Quiz 1
1 / 50
Compositional analysis of flue gas coming out of a furnace in respect of O2 and CO2% can be continuously done by a/an_____?
2 / 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 ?
3 / 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_______?
4 / 50
Concentration of sugar solution can be determined by the___________?
5 / 50
A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is ______ ?C?
6 / 50
Bourdon tube is never made of_________?
7 / 50
A barometer measures the ______ pressure?
8 / 50
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same__________?
9 / 50
Configuration of Bourdon spring tube is never made of ______ shape?
10 / 50
All the thermocouples used for temperature measurement use dissimilar metal _________?
11 / 50
Change of angle of refraction with composition comprises the working principle of a_____?
12 / 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_______?
13 / 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?
14 / 50
Composition of alloys can be determined by __________?
15 / 50
Cascade control means ________?
16 / 50
Compositional analysis of _______ is done using mass spectrometer?
17 / 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________?
18 / 50
A bolometer is ___________?
19 / 50
A system with transfer function [(2S/4S) + 1] is of ______ order?
20 / 50
A non-linear system will have ______ steady state values?
21 / 50
A magnetic flowmeter is__________?
22 / 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__________?
23 / 50
______ is an example of distributed parameter system ?
24 / 50
A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if_________?
25 / 50
A non-linear chemical system is exemplified by a/an__________?
26 / 50
_______ is undesirable in thermocouples used in industries ?
27 / 50
A sinusoidal variation in the input passing through a linear first order system __________?
28 / 50
A pyranometer is an instrument used for measuring the_____?
29 / 50
_____ stability method uses open loop transfer function?
30 / 50
A negative gain margin expressed in decibels means a/an _____ system?
31 / 50
An aneroid barometer measures the ______ pressure?
32 / 50
A manometer measures the ______ pressure?
33 / 50
_______ controller has the maximum stabilising time?
34 / 50
A stable system is the one_____?
35 / 50
A constant volume gas thermometer employing _______ is used to measure sub-zero (i.e., < 0?C) temperature?
36 / 50
A system with a double pole at the origin is unstable since the corresponding term in the time domain_________?
37 / 50
A mercury barometer measures the ______ pressure?
38 / 50
Bimetal strips are not used in_________?
39 / 50
An amplitude ratio of 0.1 corresponds to ______ decibels?
40 / 50
Characteristic equation is the denominator of _____ loop transfer function?
41 / 50
A pyrheliometer is an instrument used for measuring the__________?
42 / 50
Bode diagram are generated from output response of the system subjected to which of the following input ?
43 / 50
A simple pitot tube measures the_____?
44 / 50
________ thermometer cannot measure sub-zero (< 0? C) temperature ?
45 / 50
_____ are analysed using a Polarograph?
46 / 50
Bode stability method uses _____ loop transfer function?
47 / 50
Accurate temperature measurement performance of a radiation pyrometer cannot be affected, if the ?
48 / 50
A typical example of a physical system with under damped characteristic is a______?
49 / 50
Composition of natural gas is determined by the__________?
50 / 50
_____ is the static characteristics of an instrument?
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