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