Process Control and Instrumentation A proportional controller with a gain of Kc is used to control a first order process. The offset will increase, if Kc is reduced Kc is increased Derivative control action is introduced Integral control action is introduced Kc is reduced Kc is increased Derivative control action is introduced Integral control action is introduced ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature Embrittlement of iron occurs Emf produced is very low of the order of microvolt Both B and C Here Rusting of iron takes place Embrittlement of iron occurs Emf produced is very low of the order of microvolt Both B and C Here Rusting of iron takes place ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect. Thomson Peltier None of these Seebeck Thomson Peltier None of these Seebeck ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is π/12 5π/12 π/6 π/3 π/12 5π/12 π/6 π/3 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. Platinum-platinum/rhodium Chromel-alumel None of these Iron-constantan Platinum-platinum/rhodium Chromel-alumel None of these Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A bolometer is An element which senses optical input and delivers thermal output Used for the measurement of thermal radiation Neither A nor B Here Both A & B Here An element which senses optical input and delivers thermal output Used for the measurement of thermal radiation Neither A nor B Here Both A & B Here ANSWER DOWNLOAD EXAMIANS APP
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