Process Control and Instrumentation __________ are analysed using a polarograph. Solids Liquids Isotonic solutions Gases Solids Liquids Isotonic solutions Gases 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 D² D⁴ D³ D D² D⁴ ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The function of a transducer is to Codify/decodify the input signal Amplify the input signal Modify the input signal Convert the primary signal into a more useful quantity, usually an electric impulse Codify/decodify the input signal Amplify the input signal Modify the input signal Convert the primary signal into a more useful quantity, usually an electric impulse 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. Increase of thermal conductivity Increase of pressure Volumetric expansion Differential linear expansion Increase of thermal conductivity Increase of pressure Volumetric expansion Differential linear expansion 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. Exponential decrease Decrease No change Increase Exponential decrease Decrease No change Increase ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following can not measure a temperature of 1600°C ? Platinum resistance thermometer Radiation pyrometer Thermocouple Photo-electric pyrometer Platinum resistance thermometer Radiation pyrometer Thermocouple Photo-electric pyrometer ANSWER DOWNLOAD EXAMIANS APP
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