Process Control and Instrumentation Working principle of mercury in glass thermometer is based on the __________ of mercury with increase in temperature. Increase of pressure Differential linear expansion Volumetric expansion Increase of thermal conductivity Increase of pressure Differential linear expansion Volumetric expansion Increase of thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase lag of the sinusoidal response of a first order system is 180° 90° 30° 120° 180° 90° 30° 120° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A typical example of a physical system with under damped characteristic is a CSTR with first order reaction Thermocouple kept immersed in a liquid filled thermowell Spring loaded diaphragm valve U-tube manometer CSTR with first order reaction Thermocouple kept immersed in a liquid filled thermowell Spring loaded diaphragm valve U-tube manometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a variable area flow meter? Magnetic flow meter Rotameter Piston type meter Orifice and tapered plug meter Magnetic flow meter Rotameter Piston type meter Orifice and tapered plug meter ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing Helium Hydrogen None of these Nitrogen Helium Hydrogen None of these Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The open loop transfer function of a control system is KR/(1 + TS) . This represents Dead time system A first order system A first order time lag A second order system Dead time system A first order system A first order time lag A second order system ANSWER DOWNLOAD EXAMIANS APP
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