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 5π/12 π/6 π/12 π/3 5π/12 π/6 π/12 π/3 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which of the following is a desirable characteristic of an instrument? Poor reproducibility High measuring lag High fidelity High drift Poor reproducibility High measuring lag High fidelity High drift ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Flapper nozzle is used in a/an __________ controller. Pneumatic Electronic None of these Hydraulic Pneumatic Electronic None of these Hydraulic ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Temperature of molten pig iron (1450°C) and molten slag (1500°C) flowing out of a blast furnace is measured by a/an Chromel-alumel thermocouple Radiation pyrometer Either B or C Optical pyrometer Chromel-alumel thermocouple Radiation pyrometer Either B or C Optical pyrometer ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A mercury barometer measures the __________ pressure. Absolute Vacuum Atmospheric Gauge Absolute Vacuum Atmospheric Gauge ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is 36 54 12 68 36 54 12 68 ANSWER DOWNLOAD EXAMIANS APP
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