Process Control and Instrumentation Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C? Thermocouples Photoelectric pyrometer Radiation pyrometer Optical pyrometer Thermocouples Photoelectric pyrometer Radiation pyrometer Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A bolometer is An element which senses optical input and delivers thermal output Used for the measurement of thermal radiation Both A & B Here Neither A nor B Here An element which senses optical input and delivers thermal output Used for the measurement of thermal radiation Both A & B Here Neither A nor B Here ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase margin is equal to Phase lag + 90° 180° - phase lag Phase lag - 180° Phase lag + 180° Phase lag + 90° 180° - phase lag Phase lag - 180° Phase lag + 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation E.m.f. generated by thermocouples is of the order of Microvolts Millivolts Kilo volts Volts Microvolts Millivolts Kilo volts Volts ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by Filling nitrogen under pressure in the stem Using steel tube in place of glass tube Accounting for the tube expansion Increasing the diameter of the tube Filling nitrogen under pressure in the stem Using steel tube in place of glass tube Accounting for the tube expansion Increasing the diameter of the tube ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Typical specifications for design stipulates the gain margin and phase margin to be respectively > 1.7 and < 30° < 1.7 and < 30° > 1.7 and > 30° < 1.7 and > 30° > 1.7 and < 30° < 1.7 and < 30° > 1.7 and > 30° < 1.7 and > 30° ANSWER DOWNLOAD EXAMIANS APP
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