Process Control and Instrumentation According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is 90° 45° 0° 180° 90° 45° 0° 180° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is 2 3 1 4 2 3 1 4 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dilute wine was used as a thermometric liquid initially to develop temperature scale. First emperical temperature scale developed was the __________ scale. Centigrade Fahrenheit Reaumer Kelvin Centigrade Fahrenheit Reaumer Kelvin ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant) V/nRT p/nRT nRT/P nRT/V V/nRT p/nRT nRT/P nRT/V ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere? Copper-constantan Iron-constantan Chromel-alumel Platinum-platinum + rhodium Copper-constantan Iron-constantan Chromel-alumel Platinum-platinum + rhodium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Phase margin is equal to Phase lag + 180° Phase lag - 180° 180° - phase lag Phase lag + 90° Phase lag + 180° Phase lag - 180° 180° - phase lag Phase lag + 90° ANSWER DOWNLOAD EXAMIANS APP
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