Process Control and Instrumentation On-off controllers are normally used for Low loads Temperature changes Flow rate changes None of these Low loads Temperature changes Flow rate changes None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermometers is not suitable for distant reading upto 60 metres? Resistance thermometer Mercury in glass thermometer Vapor pressure thermometer Constant volume gas thermometer Resistance thermometer Mercury in glass thermometer Vapor pressure thermometer Constant volume gas thermometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a second order instrument? Pressure gauge with one bellow, two tubes and a tank None of these Mercury in glass thermometer with covering Bare mercury in glass thermometer Pressure gauge with one bellow, two tubes and a tank None of these Mercury in glass thermometer with covering Bare mercury in glass thermometer 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 π/3 π/6 π/12 5π/12 π/3 π/6 π/12 5π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Cascade control means More than one feed-back loop One feed-back loop On-off control Feed forward control More than one feed-back loop One feed-back loop On-off control Feed forward control ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is not a variable area flow meter? Piston type meter Rotameter Orifice and tapered plug meter Magnetic flow meter Piston type meter Rotameter Orifice and tapered plug meter Magnetic flow meter ANSWER DOWNLOAD EXAMIANS APP
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