Process Control and Instrumentation Very low pressure is expressed in microns(μ), which is equal to __________ mm of Hg coloumn (absolute) at 0°C. 0.0001 0.001 0.01 0.1 0.0001 0.001 0.01 0.1 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, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 12, 0.6, 0.12 8, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following temperature measuring instruments need not touch the object whose temperature is being measured? Radiation/infrared pyrometer Thermo electric pyrometer Filled system thermometer Mercury in glass thermometer Radiation/infrared pyrometer Thermo electric pyrometer Filled system thermometer Mercury in glass thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Bimetal strips are not used in Relays for opening & closing of electrical circuits Bimetallic thermometers Thermostats Thermocouples Relays for opening & closing of electrical circuits Bimetallic thermometers Thermostats Thermocouples ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dead zone in an instrument must be less than __________ percent of the scale. 1.5 8 4 0.2 1.5 8 4 0.2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the Object is transparent Enhancement or attentuation of redia-tion occurs in the sighting path Object has varying emissivity Object and surrounding are at almost the same temperature Object is transparent Enhancement or attentuation of redia-tion occurs in the sighting path Object has varying emissivity Object and surrounding are at almost the same temperature ANSWER DOWNLOAD EXAMIANS APP
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