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 Depends only upon the open loop transfer function Determines its stability All of these Is the same for set point or load changes Depends only upon the open loop transfer function Determines its stability All of these Is the same for set point or load changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer Decreases Increases exponentially Remains constant Increases Decreases Increases exponentially Remains constant Increases ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an Chromel-alumel thermocouple Optical pyrometer Either B or C Radiation pyrometer Chromel-alumel thermocouple Optical pyrometer Either B or C Radiation pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Stability of a control system containing a transportation lag can be best analysed by Frequency response methods Routh test Root locus methods None of these Frequency response methods Routh test Root locus methods None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The unit step response of the transfer function 1/(s² + 2s + 3) Has a non-zero slope at the origin Is unstable Has a damped oscillatory characteristics Is overdamped Has a non-zero slope at the origin Is unstable Has a damped oscillatory characteristics Is overdamped ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation For measuring the temperature of a red hot furnace, which is the most suitable instrument? Bimetallic thermometer Optical pyrometer Platinum resistance thermometer Thermocouple Bimetallic thermometer Optical pyrometer Platinum resistance thermometer Thermocouple ANSWER DOWNLOAD EXAMIANS APP
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