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