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