Process Control and Instrumentation Which of the following shows maximum dip effect (indicating reverse direction of temperature change)? Radiation pyrometer Bimetallic thermometer Thermocouple Mercury thermometer Radiation pyrometer Bimetallic thermometer Thermocouple Mercury thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase margin is equal to Phase lag + 90° 180° - phase lag Phase lag - 180° Phase lag + 180° Phase lag + 90° 180° - phase lag Phase lag - 180° Phase lag + 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C? Photoelectric pyrometer Optical pyrometer Thermocouples Radiation pyrometer Photoelectric pyrometer Optical pyrometer Thermocouples Radiation pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Smoke density of the flue gas going out of the chimney is measured by a Chromatograph Polarograph Thermal conductivity meter Photo electric cell Chromatograph Polarograph Thermal conductivity meter Photo electric cell ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature? All of these Platinum-platinum + rhodium Iron-constantan Chromel-constantan All of these Platinum-platinum + rhodium Iron-constantan Chromel-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation 0n-off control which is a special case of proportional control, has a band width of about __________ percent. 100 25 75 100 25 75 ANSWER DOWNLOAD EXAMIANS APP
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