Process Control and Instrumentation Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere? Copper-constantan Platinum-platinum + rhodium Iron-constantan Chromel-alumel Copper-constantan Platinum-platinum + rhodium Iron-constantan Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following filled system expansion thermometer has the capability to measure the lowest temperature? Mercury in glass thermometer Alcohol in glass thermometer Mercury in steel thermometer Fused metal (Na or K) in steel thermometer Mercury in glass thermometer Alcohol in glass thermometer Mercury in steel thermometer Fused metal (Na or K) in steel thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature control of an exothermic chemical reaction taking place in a CSTR is done with the help of cooling water flowing in a jacket around the reactor. The types of valve and controller action to be recommended are Air to open valve with the controller indirect acting Air to open valve with the controller direct acting Air to close valve with the controller direct acting Air to close valve with the controller indirect acting Air to open valve with the controller indirect acting Air to open valve with the controller direct acting Air to close valve with the controller direct acting Air to close valve with the controller indirect acting ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their Low flash point Low electrical conductivity High viscosity index Low thermal conductivity Low flash point Low electrical conductivity High viscosity index Low thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation E.m.f. generated by thermocouples is of the order of Microvolts Kilo volts Millivolts Volts Microvolts Kilo volts Millivolts Volts ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Humidity of air can be determined by a Mass spectrometer Sling psychrometer Chromatograph Polarimeter Mass spectrometer Sling psychrometer Chromatograph Polarimeter ANSWER DOWNLOAD EXAMIANS APP
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