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