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