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Process Control and Instrumentation

Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

1
-1
44020
43838

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Process Control and Instrumentation
A barometer measures the __________ pressure.

Absolute
Gauge
Absolute as well as gauge
Dynamic

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Process Control and Instrumentation
The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K(s + 1)/2(2s + 1)(3s + 1) will have a definite number of loci for variation of K from 0 to ∞. The number of loci is

3
1
2
4

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is

Chromel-alumel
Platinum-platinum+rhyodium
Iron-constantan
Platinum-rhodium

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Process Control and Instrumentation
Which of the following is not a differential pressure flow meter?

Venturimeter
Rotameter
Flow nozzle
Orificemeter

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Process Control and Instrumentation
Zirconia probe is used for the measurement of

Speed of a submarine
% O₂ in flue gas
% CO₂ in flue gas
Humidity of air

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