Process Control and Instrumentation A first order system with unity gain and time constant τ is subjected to a sinusoidal input of frequency w = 1/τ. The amplitude ratio for this system is 1 0.5 0.25 1/√2 1 0.5 0.25 1/√2 ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in Current Light intensity Flux density Voltage Current Light intensity Flux density Voltage ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation The transfer function of a pure dead time system with dead time τd is E-τds Τds + 1 Eτds 1/(τds + 1) E-τds Τds + 1 Eτds 1/(τds + 1) ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation High temperature of around 2000°C of incandescent gas mantles is measured by a/an None of these Here Optical pyrometer Radiation pyrometer Specially designed thermocouple None of these Here Optical pyrometer Radiation pyrometer Specially designed thermocouple ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Which thermocouple can be used to measure a temperature of around 1400°C ? Aluminium-chromel Copper-constantan Platinum-platinum+rhodium None of these Aluminium-chromel Copper-constantan Platinum-platinum+rhodium None of these ANSWER DOWNLOAD EXAMIANS APP
Process Control and Instrumentation Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury. 250 350 550 700 250 350 550 700 ANSWER DOWNLOAD EXAMIANS APP
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