Process Control and Instrumentation Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit? Joule heating effect Thomson effect Seebeck effect Peltier effect Joule heating effect Thomson effect Seebeck effect Peltier effect 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 D³ D D⁴ D² D³ D D⁴ D² ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C. 250 500 1000 750 250 500 1000 750 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire. No change Increase Decrease Exponential decrease No change Increase Decrease Exponential decrease 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 Optical pyrometer Mercury in glass thermometer Alcohol filled thermometer Iron-constantan thermocouple Optical pyrometer Mercury in glass thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Degree to which an instrument indicates the changes in measured variable without dynamic error is called its Speed of response Fidielity Static characteristics Reproducibility Speed of response Fidielity Static characteristics Reproducibility ANSWER DOWNLOAD EXAMIANS APP
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