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Process Control and Instrumentation

Process Control and Instrumentation
An aneroid barometer measures the __________ pressure.

Gage
Vacuum
Atmospheric
Absolute

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

Orifice meter
V-notch
Cipolletti weir
Rectangular weir

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Process Control and Instrumentation
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 - e-t
1 + et
1 - et
1 + e-t

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Process Control and Instrumentation
Emission spectroscopy is used for

NOxdetermination
Determination of CO₂ in gases
Solids and metal analysis
Determining water purity

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Process Control and Instrumentation
Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1).

W = √(7/6), Kc = 46/3
W = √(7/8), Kc = 45/4
W = 1, Kc = 13
W = 1/√14, Kc = 45/7√14

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Process Control and Instrumentation
A pyrheliometer is an instrument used for measuring the

Diffuse radiation
Beam radiation
Bright sunshine period
None of these

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