Process Control and Instrumentation Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale. Reaumer Fahrenheit Kelvin Centigrade Reaumer Fahrenheit Kelvin Centigrade ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Stabilising time for the controllers is the time required for the response to reach __________ percent of its ultimate value. 95 87.5 63.2 100 95 87.5 63.2 100 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A stable system is the one Which satisfies the conditions for a servo problem Which exhibits an unbounded response to a bounded input None of these For which the output response is bounded for all bounded input Which satisfies the conditions for a servo problem Which exhibits an unbounded response to a bounded input None of these For which the output response is bounded for all bounded input ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere? Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum + rhodium Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum + rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase lag of the frequency response of a second order system to a sinusoidal forcing function Is 30° Is 90° at the most Is 120° Approaches 180° asymptotically Is 30° Is 90° at the most Is 120° Approaches 180° asymptotically 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 12, 0.6, 0.12 8, 0.6, 0.08 12, 0.4, 0.08 8, 0.6, 0.12 12, 0.6, 0.12 8, 0.6, 0.08 12, 0.4, 0.08 8, 0.6, 0.12 ANSWER DOWNLOAD EXAMIANS APP
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