Process Control and Instrumentation Which of the following thermocouples has the widest temperature measurement range? Platinum-platinum/rhodium Chromel-alumel Iron-constantan Copper-constantan Platinum-platinum/rhodium Chromel-alumel Iron-constantan Copper-constantan ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Dilatometer is used to measure Contraction/expansion due to changes in temperature Stress Deflection Strain Contraction/expansion due to changes in temperature Stress Deflection Strain ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Select the correct statement from the following. The phase lag of a pure time delay system decreases with increasing frequency The amplitude ratio of a pure capacity process is inversely proportional to frequency The amplitude ratio of a pure time delay system increases with frequency The frequency response of a pure capacity process is unbounded The phase lag of a pure time delay system decreases with increasing frequency The amplitude ratio of a pure capacity process is inversely proportional to frequency The amplitude ratio of a pure time delay system increases with frequency The frequency response of a pure capacity process is unbounded ANSWER DOWNLOAD EXAMIANS APP
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 180° 45° 90° 0° 180° 45° 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation In a second order under damped system, the Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot None of these Overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e Time required for the response of first reach its ultimate value is called the response time Decay ratio (which is the ratio of the sizes of successive peaks) is equal to the reciprocal of overshoot None of these Overshoot (which is a measure of how much the response exceeds the ultimate value) increase with the decrease of damping co-efficient e Time required for the response of first reach its ultimate value is called the response time 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? Platinum-platinum + rhodium Copper-constantan Chromel-alumel Iron-constantan Platinum-platinum + rhodium Copper-constantan Chromel-alumel Iron-constantan ANSWER DOWNLOAD EXAMIANS APP
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