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