Process Control And Instrumentation - Study Mode
[#76] Thermocouple in a thermal well behaves as a true
Correct Answer
(C) Multiple first order system
[#77] Thermistors are made of
Correct Answer
(B) Metal oxides
[#78] For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a
Correct Answer
(D) All of the above
[#79] Suppose that the gain, time constant and dead time of a process with the following transfer function:G c (s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain K c of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as
Correct Answer
(B) 12, 0.6, 0.12
[#80] Time constant is the
Correct Answer
(A) Time taken by the controlled variable to reach 63.2% of its full change