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