Process Control and Instrumentation Which of the following thermocouples has the least temperature measurement range? Iron-constantan Copper-constantan Platinum-platinum/rhodium Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum/rhodium Chromel-alumel ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following thermocouples is capable of measuring a temperature of -50°C? Chromel - alumel Copper - constantan Platinum - platinum + rhodium Iron-constantan Chromel - alumel Copper - constantan Platinum - platinum + rhodium Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Gain margin is equal to the Reciprocal of amplitude ratio Gain in P-I controller Gain in P controller Amplitude ratio Reciprocal of amplitude ratio Gain in P-I controller Gain in P controller Amplitude ratio ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Typical specifications for design stipulates the gain margin and phase margin to be respectively > 1.7 and < 30° < 1.7 and > 30° > 1.7 and > 30° < 1.7 and < 30° > 1.7 and < 30° < 1.7 and > 30° > 1.7 and > 30° < 1.7 and < 30° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The Laplace transform of exp(at), where a > 0, is defined only for the Laplace parameter, s > a since The function is exponential The Laplace transform integral of exp(at) has initial values only for s > a The Laplace transform of integral of exp(at) has finite values only for s > a The function exp(at) is piece-wise continuous only for s > a The function is exponential The Laplace transform integral of exp(at) has initial values only for s > a The Laplace transform of integral of exp(at) has finite values only for s > a The function exp(at) is piece-wise continuous only for s > a ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature Embrittlement of iron occurs Both B and C Here Emf produced is very low of the order of microvolt Rusting of iron takes place Embrittlement of iron occurs Both B and C Here Emf produced is very low of the order of microvolt Rusting of iron takes place ANSWER DOWNLOAD EXAMIANS APP
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