Process Control and Instrumentation A mercury thermometer can not be used to measure the temperature below the freezing point of mercury, which is __________ °C. -80.9 -60.9 -11.9 -38.9 -80.9 -60.9 -11.9 -38.9 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which thermocouple can be used to measure a temperature of around 1400°C ? Copper-constantan Aluminium-chromel Platinum-platinum+rhodium None of these Copper-constantan Aluminium-chromel Platinum-platinum+rhodium None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity? CO₂ CO O₂ N₂ CO₂ CO O₂ N₂ 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 E.m.f. generated by thermocouples is of the order of Microvolts Kilo volts Volts Millivolts Microvolts Kilo volts Volts Millivolts ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal wells used in temperature measurements should have Very thick walls High transmissivity of radiation Polished surface Low emissivity Very thick walls High transmissivity of radiation Polished surface Low emissivity ANSWER DOWNLOAD EXAMIANS APP
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