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 π/3 π/6 5π/12 π/12 π/3 π/6 5π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Bourdon gauges are used for measuring pressure (kg/cm² ) < 2 (gauge) < atmospheric > 10 (absolute) > 2 (gauge) < 2 (gauge) < atmospheric > 10 (absolute) > 2 (gauge) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature of __________ can not be measured by an optical or radiation pyrometer. Combustion space in boilers Hot blast (air) from stoves Molten slag flowing out of blast furnace Rotary limestone calcination kiln Combustion space in boilers Hot blast (air) from stoves Molten slag flowing out of blast furnace Rotary limestone calcination kiln ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The open loop transfer function of a control system is KR/(1 + TS) . This represents A first order system Dead time system A second order system A first order time lag A first order system Dead time system A second order system A first order time lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following controllers has maximum offset? P-D controller P-I-D controller P-controller P-I controller P-D controller P-I-D controller P-controller P-I controller ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable. None of these Controlled Manipulated Load None of these Controlled Manipulated Load ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS