Process Control and Instrumentation Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is Chromel-alumel Iron-constantan None of these Platinum-platinum+rhodium Chromel-alumel Iron-constantan None of these Platinum-platinum+rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A stable system is the one Which satisfies the conditions for a servo problem Which exhibits an unbounded response to a bounded input None of these For which the output response is bounded for all bounded input Which satisfies the conditions for a servo problem Which exhibits an unbounded response to a bounded input None of these For which the output response is bounded for all bounded input ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Nichol's chart deals with Closed loop values vs. open loop values R. vs. phase lag of second order Frequency response values of controllers R. vs. phase lag of first order Closed loop values vs. open loop values R. vs. phase lag of second order Frequency response values of controllers R. vs. phase lag of first order ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Positioning controllers are used for High loads Temperature changes Low loads Flow rate changes High loads Temperature changes Low loads Flow rate changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 700 350 250 550 700 350 250 550 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is π/6 π/3 π/12 5π/12 π/6 π/3 π/12 5π/12 ANSWER DOWNLOAD EXAMIANS APP
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