Process Control and Instrumentation The amplitude ratio for the sinusoidal response of a __________ is 1. Transportation lag None of these First order system Second order system Transportation lag None of these First order system Second order system ANSWER DOWNLOAD EXAMIANS APP
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 1 0.25 0.5 1/√2 1 0.25 0.5 1/√2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion? Nickel Invar Brass Chromel Nickel Invar Brass Chromel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is capable of measuring a temperature of -50°C? Iron-constantan Platinum - platinum + rhodium Copper - constantan Chromel - alumel Iron-constantan Platinum - platinum + rhodium Copper - constantan Chromel - alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In second order underdamped system, Overshoot increases for increasing damping co-efficient Decay ratio = (overshoot)² Decay ratio = overshoot Large damping co-efficient means smaller damping Overshoot increases for increasing damping co-efficient Decay ratio = (overshoot)² Decay ratio = overshoot Large damping co-efficient means smaller damping ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following temperature measuring instruments need not touch the object whose temperature is being measured? Filled system thermometer Mercury in glass thermometer Radiation/infrared pyrometer Thermo electric pyrometer Filled system thermometer Mercury in glass thermometer Radiation/infrared pyrometer Thermo electric pyrometer ANSWER DOWNLOAD EXAMIANS APP
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