Process Control and Instrumentation Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature. Differential linear expansion Increase of pressure Increase of thermal conductivity Volumetric expansion Differential linear expansion Increase of pressure Increase of thermal conductivity Volumetric expansion ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is Platinum-platinum+rhyodium Chromel-alumel Platinum-rhodium Iron-constantan Platinum-platinum+rhyodium Chromel-alumel Platinum-rhodium Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The thermal emf-temperature relationship of most thermocouples is Parabolic Square root Linear Exponential Parabolic Square root Linear Exponential ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall. This is the working principle of a Polarograph Polarimeter PH meter Chromatograph Polarograph Polarimeter PH meter Chromatograph ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is never used as an element of industrial resistance thermometer? 30% iron + 70% nickel Lead Nickel Copper 30% iron + 70% nickel Lead Nickel Copper ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which is the most suitable instrument for measuring pressure below 3 microns? Ionisation gauge Mcleoid gauge Bourdon guage Alphatron Ionisation gauge Mcleoid gauge Bourdon guage Alphatron ANSWER DOWNLOAD EXAMIANS APP
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