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