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