Process Control and Instrumentation Phase margin is equal to 180° - phase lag Phase lag + 90° Phase lag - 180° Phase lag + 180° 180° - phase lag Phase lag + 90° Phase lag - 180° Phase lag + 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Change of angle of refraction with composition comprises the working principle of a Refractrometer Polarimeter Spectrometer Polarograph Refractrometer Polarimeter Spectrometer Polarograph ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system? 1 < 1 >1 None of these 1 < 1 >1 None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following can not measure a temperature of 1600°C ? Radiation pyrometer Thermocouple Photo-electric pyrometer Platinum resistance thermometer Radiation pyrometer Thermocouple Photo-electric pyrometer Platinum resistance 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 5π/12 π/6 π/12 π/3 5π/12 π/6 π/12 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their Low thermal conductivity Low electrical conductivity High viscosity index Low flash point Low thermal conductivity Low electrical conductivity High viscosity index Low flash point ANSWER DOWNLOAD EXAMIANS APP
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