Process Control and Instrumentation Helium gas constant volume thermometer is suitable for the measurement of a temperature of __________ °C. < 100 > 800 > 0 < 0 < 100 > 800 > 0 < 0 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 700 550 350 250 700 550 350 250 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the Object and surrounding are at almost the same temperature Enhancement or attentuation of redia-tion occurs in the sighting path Object has varying emissivity Object is transparent Object and surrounding are at almost the same temperature Enhancement or attentuation of redia-tion occurs in the sighting path Object has varying emissivity Object is transparent 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 Invar Chromel Brass Nickel Invar Chromel Brass ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference? Thomson effect Peltier effect None of these Seebeck effect Thomson effect Peltier effect None of these Seebeck effect ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The function of a transducer is to Modify the input signal Codify/decodify the input signal Convert the primary signal into a more useful quantity, usually an electric impulse Amplify the input signal Modify the input signal Codify/decodify the input signal Convert the primary signal into a more useful quantity, usually an electric impulse Amplify the input signal ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS