Process Control and Instrumentation According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is 45° 90° 180° 0° 45° 90° 180° 0° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change? Mercury Water Carbon-tetrachloride Methyl alcohal Mercury Water Carbon-tetrachloride Methyl alcohal ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is 2 4 3 1 2 4 3 1 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a composition measuring instrument? Thermal conductivity cell Mass spectrometer Polarograph Hot wire anemometer Thermal conductivity cell Mass spectrometer Polarograph Hot wire anemometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation On-off controllers are normally used for Temperature changes Low loads Flow rate changes None of these Temperature changes Low loads Flow rate changes None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Hot wire anemometer is used for the measurement of Flow rates of fluids Flow rates of granular solids Very high temperature Thermal conductivity of gases Flow rates of fluids Flow rates of granular solids Very high temperature Thermal conductivity of gases ANSWER DOWNLOAD EXAMIANS APP
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