Process Control and Instrumentation Normal mercury thermometer can be used to measure a temperature of about 300°C. However, its maximum temperature measurement range can be increased upto about 500°C by Using steel tube in place of glass tube Accounting for the tube expansion Filling nitrogen under pressure in the stem Increasing the diameter of the tube Using steel tube in place of glass tube Accounting for the tube expansion Filling nitrogen under pressure in the stem Increasing the diameter of the tube ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A sinusoidal variation in the input passing through a linear first order system Gets attenuated (magnitude decreases) Gets amplified (magnitude increases) Becomes less oscillatory (frequency decreases) Becomes more oscillatory (frequency increases) Gets attenuated (magnitude decreases) Gets amplified (magnitude increases) Becomes less oscillatory (frequency decreases) Becomes more oscillatory (frequency increases) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Suppose that the gain, time constant and dead time of a process with the following transfer function:Gc(s) = 10 exp( - 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as 12, 0.6, 0.12 8, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 12, 0.6, 0.12 8, 0.6, 0.12 12, 0.4, 0.08 8, 0.6, 0.08 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A constant volume gas thermometer employing __________ is used to measure sub-zero (i.e., < 0° C) temperature. None of these Hydrogen Nitrogen Helium None of these Hydrogen Nitrogen Helium ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation For increased speed of response of an expansion pressure spring thermometer, the thermometer bulb should have a Large area but small mass Small specific heat All of these High thermal conductivity Large area but small mass Small specific heat All of these High thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Continuous measurement of moisture content of paper in paper industry is done by measuring the Electrical resistance through the paper Thermal conductivity through the paper None of these Magnetic susceptibility Electrical resistance through the paper Thermal conductivity through the paper None of these Magnetic susceptibility ANSWER DOWNLOAD EXAMIANS APP
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