Process Control and Instrumentation The characteristic equation for the control system with a closed loop transfer function G₁/1 + G₂ is given by 1 + G₂ = 0. The characteristic equation for the control system All of these Is the same for set point or load changes Determines its stability Depends only upon the open loop transfer function All of these Is the same for set point or load changes Determines its stability Depends only upon the open loop transfer function ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Typical specifications for design stipulates the gain margin and phase margin to be respectively < 1.7 and < 30° < 1.7 and > 30° > 1.7 and > 30° > 1.7 and < 30° < 1.7 and < 30° < 1.7 and > 30° > 1.7 and > 30° > 1.7 and < 30° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase margin is equal to Phase lag + 90° 180° - phase lag Phase lag + 180° Phase lag - 180° Phase lag + 90° 180° - phase lag Phase lag + 180° Phase lag - 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Pick out the most suitable instrument for measuring temperature in the range of-40 to 425°C. Radiation pyrometer None of these Bimetallic thermometer Mercury thermometer Radiation pyrometer None of these Bimetallic thermometer Mercury thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The offset introduced by proportional controller with gain Kc in response of first order system can be reduced by Introducing integral control None of these Reducing value of Kc Introducing derivative control Introducing integral control None of these Reducing value of Kc Introducing derivative control ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermistors are made of Iron-copper alloys Metal oxides Nickel-chromium alloys Ultra pure metals Iron-copper alloys Metal oxides Nickel-chromium alloys Ultra pure metals ANSWER DOWNLOAD EXAMIANS APP
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