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Process Control and Instrumentation

Process Control and Instrumentation
Composition of alloys can be determined by

Chromatograph
None of these
Refractrometer
Polarograph

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

75
100
25

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Process Control and Instrumentation
In Bode plot, A.R. vs. w is plotted on a/an __________ graph paper.

Ordinary
Log-lag
Semi-log
Triangular

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Process Control and Instrumentation
Which of the following thermocouple materials does not contain nickel?

Alumel
Constantan
None of these
Chromel

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Process Control and Instrumentation
Temperature of __________ can not be measured by an optical or radiation pyrometer.

Rotary limestone calcination kiln
Hot blast (air) from stoves
Molten slag flowing out of blast furnace
Combustion space in boilers

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Process Control and Instrumentation
Platinum resistance thermometer is the international standard for temperature measurement between

13.81°K to 903.9°K
Triple point of hydrogen and freezing point of antimony
Both A and B
Neither A nor B

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