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