Process Control and Instrumentation Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature? Iron-constantan Copper-constantan Platinum-platinum + rhodium Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum + rhodium Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the systems having following transfer functions is stable? Exp(-20s)/(s² + 2s-l) 1/(s² + 2s + 2) 1/(s²+ 2) 1/(s²-2s + 3) Exp(-20s)/(s² + 2s-l) 1/(s² + 2s + 2) 1/(s²+ 2) 1/(s²-2s + 3) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is Platinum-platinum+rhodium Iron-constantan Chromel-alumel Either A, B or C Platinum-platinum+rhodium Iron-constantan Chromel-alumel Either A, B or C ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an Thermal conductivity cell Orsat apparatus Chromatograph Zirconia probe Thermal conductivity cell Orsat apparatus Chromatograph Zirconia probe ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is the dynamic characteristics of an instrument? Fidelity Sensitivity Dead zone Reproducibility Fidelity Sensitivity Dead zone Reproducibility ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the Enhancement or attentuation of redia-tion occurs in the sighting path Object and surrounding are at almost the same temperature Object is transparent Object has varying emissivity Enhancement or attentuation of redia-tion occurs in the sighting path Object and surrounding are at almost the same temperature Object is transparent Object has varying emissivity ANSWER DOWNLOAD EXAMIANS APP
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