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