Process Control and Instrumentation The operation of a rotameter is based on Pressure drop across a nozzle Rotation of a turbine Pressure at a stagnation point Variable flow area Pressure drop across a nozzle Rotation of a turbine Pressure at a stagnation point Variable flow area 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
Process Control and Instrumentation Thermal wells are used in the temperature measurement to Guard against corrosive and oxidising action on thermocouple materials Reduce measuring lag Increase the fidelity Increase the sensitivity Guard against corrosive and oxidising action on thermocouple materials Reduce measuring lag Increase the fidelity Increase the sensitivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermal conductivity measurement is used for the determination of O₂ percentage in the flue gas Specific gravity of petrofuels CO₂ percentage in the flue gas Composition of an alloy O₂ percentage in the flue gas Specific gravity of petrofuels CO₂ percentage in the flue gas Composition of an alloy ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Thermistors are made of Metal oxides Nickel-chromium alloys Iron-copper alloys Ultra pure metals Metal oxides Nickel-chromium alloys Iron-copper alloys Ultra pure metals 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, 0 -π/2, π/2 0, π/2 - ∞, π/2 -π/2, 0 -π/2, π/2 0, π/2 - ∞, π/2 ANSWER DOWNLOAD EXAMIANS APP
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