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