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