Process Control and Instrumentation With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer Decreases Increases exponentially Increases Remains constant Decreases Increases exponentially Increases Remains constant 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. 250 700 350 550 250 700 350 550 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is never used as an element of industrial resistance thermometer? Lead Nickel 30% iron + 70% nickel Copper Lead Nickel 30% iron + 70% nickel Copper 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 5π/12 π/6 π/3 π/12 5π/12 π/6 π/3 π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Conversion formula for converting amplitude ratio (AR) into decibels is Decibel = 20 log10 (AR)0.5 Decibel = 20 log10 (AR) Decibel = 20 loge (AR) Decibel = 20 loge (AR)0.5 Decibel = 20 log10 (AR)0.5 Decibel = 20 log10 (AR) Decibel = 20 loge (AR) Decibel = 20 loge (AR)0.5 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Gain margin is equal to the Reciprocal of amplitude ratio Gain in P controller Amplitude ratio Gain in P-I controller Reciprocal of amplitude ratio Gain in P controller Amplitude ratio Gain in P-I controller ANSWER DOWNLOAD EXAMIANS APP
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