Process Control and Instrumentation Which of the following is an undesirable dynamic characteristic of an instrument? Dead zone Static error Reproducibility Time lag Dead zone Static error Reproducibility Time lag ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation __________ is undesirable in thermocouples used in industries, Linear relation of emf to temperature Corrosion resistance Oxidation resistance Non-linear relation of emf to temperature Linear relation of emf to temperature Corrosion resistance Oxidation resistance Non-linear relation of emf to temperature ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to D² D⁴ D D³ D² D⁴ D D³ ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature. Differential linear expansion Increase of pressure Volumetric expansion Increase of thermal conductivity Differential linear expansion Increase of pressure Volumetric expansion Increase of thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermocouple is suitable for measuring Very high temperatures only Liquid temperatures only Very low temperatures only Both high and low temperatures Very high temperatures only Liquid temperatures only Very low temperatures only Both high and low temperatures ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermistor, which has high temperature co-efficient of resistivity, is used as the sensing element in resistance thermometer. It is a/an Conductor Solid semi-conductor Insulator Liquid semi-conductor Conductor Solid semi-conductor Insulator Liquid semi-conductor ANSWER DOWNLOAD EXAMIANS APP
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