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