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Process Control and Instrumentation

Process Control and Instrumentation
In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is

G/(1 + H)
H/G
G/H
H(1 + G)

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Process Control and Instrumentation
Which of the following is not the triple point of water?

32°F
492°R
32°R
273°K

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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
Thermisters which have a very high temperature co-efficient of resistivity belong to the class of solid called

Conductors
Semi conductors
Dielectrics
Insulators

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Log-log
Semi-log
Triangular
Ordinary

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Process Control and Instrumentation
Transfer function of transportation lag is

E-TS
None of these
ETS
1/(TS + 1)

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