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Process Control and Instrumentation

Process Control and Instrumentation
Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³.

100
1
10
50

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Process Control and Instrumentation
Concentration of sugar solution can be determined by the

Polarimetry
Emission spectroscopy
Flame photometry
Oscillometry

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Process Control and Instrumentation
Thermistors are used in __________ devices.

Temperature compensating
Voltage measuring
Both B & C
Temperature measuring

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Process Control and Instrumentation
The deflection in diaphragm (which is used as pressure sensor in pneumatic and electronic instruments) is dependent on the metal thickness, its diameter (d) and shape & number of corrugations. Its deflection is proportional to

D³
D²
D
D⁴

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Process Control and Instrumentation
For two non-interacting first order systems connected in series, the overall transfer function is the __________ of the individual transfer functions.

Sum
Difference
Product
Ratio

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Process Control and Instrumentation
The __________ of the fluid contained in the temperature sensing element (i.e., bulb) of filled system thermometers changes with change in temperature.

Volume
Pressure
Viscosity
All of these

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