Process Control and Instrumentation A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is 0.25 1 0.5 1/√2 0.25 1 0.5 1/√2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The inverse Laplace transform of the function f(s) = 1/S(1 + S) is 1 - e-t 1 - et 1 + et 1 + e-t 1 - e-t 1 - et 1 + et 1 + e-t 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? Methyl alcohal Water Carbon-tetrachloride Mercury Methyl alcohal Water Carbon-tetrachloride Mercury ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The frequency response of a first order system, has a phase shift with lower and upper bounds given by -π/2, π/2 -π/2, 0 0, π/2 - ∞, π/2 -π/2, π/2 -π/2, 0 0, π/2 - ∞, π/2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Positioning controllers are used for Temperature changes Low loads High loads Flow rate changes Temperature changes Low loads High loads Flow rate changes ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Bourdon gauges are used for measuring pressure (kg/cm² ) < atmospheric > 10 (absolute) > 2 (gauge) < 2 (gauge) < atmospheric > 10 (absolute) > 2 (gauge) < 2 (gauge) ANSWER DOWNLOAD EXAMIANS APP
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