Process Control and Instrumentation Which of the following is never used as an element of industrial resistance thermometer? Copper Lead 30% iron + 70% nickel Nickel Copper Lead 30% iron + 70% nickel Nickel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion? Nickel Brass Chromel Invar Nickel Brass Chromel Invar ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the Alcohol filled thermometer Iron-constantan thermocouple Mercury in glass thermometer Optical pyrometer Alcohol filled thermometer Iron-constantan thermocouple Mercury in glass thermometer Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following instruments is not used for measuring sub-zero (<0°) temperatures? Mercury in glass thermometer Vapor pressure thermometer Radiation pyrometer Platinum resistance thermometer Mercury in glass thermometer Vapor pressure thermometer Radiation pyrometer Platinum resistance thermometer ANSWER DOWNLOAD EXAMIANS APP
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? Platinum-platinum + rhodium Copper-constantan Iron-constantan Chromel-alumel Platinum-platinum + rhodium Copper-constantan Iron-constantan Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Use of I-control along with P-control facilitates Reduction of stability time Reduction of offset None of these Elimination of offset Reduction of stability time Reduction of offset None of these Elimination of offset ANSWER DOWNLOAD EXAMIANS APP
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