Process Control and Instrumentation
Thermodynamic celcius scale of temperature measurement is

Having an interval of 100° between ice point to steam point
Both A&B Here
Defined on the basis of melting point of ice and evaporation temperature of water vapor
Having an interval of 100° between ice point to steam point

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Process Control and Instrumentation
Suppose that the gain, time constant and dead time of a process with the following transfer function:Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as

8, 0.6, 0.08
12, 0.6, 0.12
12, 0.4, 0.08
8, 0.6, 0.12

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