Process Control and Instrumentation Which of the following is a 'contact' pyrometer? Resistance pyrometer Optical pyrometer Radiation pyrometer Infra red pyrometer Resistance pyrometer Optical pyrometer Radiation pyrometer Infra red pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Accurate temperature measurement performance of a radiation pyrometer can not be affected, if the Object has varying emissivity Object is transparent Enhancement or attentuation of redia-tion occurs in the sighting path Object and surrounding are at almost the same temperature Object has varying emissivity Object is transparent Enhancement or attentuation of redia-tion occurs in the sighting path Object and surrounding are at almost the same temperature ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a first order process with resistance R and capacitance C is R + C R - C RC 1/RC R + C R - C RC 1/RC ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The thermal emf-temperature relationship of most thermocouples is Parabolic Exponential Linear Square root Parabolic Exponential Linear Square root ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Out of the following themocouple wire insulating material, the highest temperature rating is for Asbestos Ceramic fibre Teflon Fibre glass Asbestos Ceramic fibre Teflon Fibre glass ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase margin is equal to Phase lag - 180° 180° - phase lag Phase lag + 180° Phase lag + 90° Phase lag - 180° 180° - phase lag Phase lag + 180° Phase lag + 90° ANSWER DOWNLOAD EXAMIANS APP
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