Process Control and Instrumentation Thermal wells are used in the temperature measurement to Guard against corrosive and oxidising action on thermocouple materials Increase the fidelity Reduce measuring lag Increase the sensitivity Guard against corrosive and oxidising action on thermocouple materials Increase the fidelity Reduce measuring lag Increase the sensitivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is capable of measuring a temperature of -50°C? Platinum - platinum + rhodium Chromel - alumel Copper - constantan Iron-constantan Platinum - platinum + rhodium Chromel - alumel Copper - constantan Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The second order system with the transfer function 4/(S² + 2S + 4) has a damping ratio of 1.0 0.5 4.0 2.0 1.0 0.5 4.0 2.0 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The operation of a rotameter is based on Pressure at a stagnation point Pressure drop across a nozzle Variable flow area Rotation of a turbine Pressure at a stagnation point Pressure drop across a nozzle Variable flow area Rotation of a turbine ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Flow rate through an orifice is __________ the pressure differential. Inversely proportional to the square root of Proportional to the square root of Inversely proportional to the square of Proportional to Inversely proportional to the square root of Proportional to the square root of Inversely proportional to the square of Proportional to ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following flow-metering instru-ments is an areameter? Pitot tube Venturimeter Hot wire anemometer Rotameter Pitot tube Venturimeter Hot wire anemometer Rotameter ANSWER DOWNLOAD EXAMIANS APP
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