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