Process Control and Instrumentation
To increase the speed of response of a pressure spring liquid or gas expansion thermometer, the clearance space between the thermometer bulb and the thermal well should not be filled with

Mercury
Oil
Air
A metal powder or graphite

ANSWER DOWNLOAD EXAMIANS APP

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

ANSWER DOWNLOAD EXAMIANS APP