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