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PROCESS CONTROL AND INSTRUMENTATION

Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 800°C is about 31 mV. The type of thermocouple used is

None of these
Chromel-alumel
Iron-constantan
Platinum-platinum+rhodium

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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

Voltage
Flux density
Light intensity
Current

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Process Control and Instrumentation
Which of the following fluid flow measuring devices can measure the largest flow rate?

Rotameter
Orificemeter
V-notch
Weir

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Process Control and Instrumentation
Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?

Invar
Chromel
Nickel
Brass

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Process Control and Instrumentation
Liquid flow rate in an open channel can not be measured by a/an

Orifice meter
Cipolletti weir
Rectangular weir
V-notch

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