Process Control and Instrumentation

Composition of natural gas is determined by the_________________?

Byadmin March 5, 2019August 24, 2021

Composition of natural gas is determined by the_________________?

A. Haldane apparatus
B. Mass spectrometer
C. Chromatograph
D. Both B. and C.

Process Control and Instrumentation

An aneroid barometer measures the _____________ pressure?

An aneroid barometer measures the _____________ pressure?

A. Atmospheric
B. Absolute
C. Vacuum
D. Gage

Read More An aneroid barometer measures the _____________ pressure?
Process Control and Instrumentation

Stroboscope is used for the measurement of _________________?

Stroboscope is used for the measurement of _________________?

A. Rpm of a flywheel
B. Frequency of light
C. Depression of freezing point
D. Liquid level under pressure

Read More Stroboscope is used for the measurement of _________________?
Process Control and Instrumentation

Which of the systems having the following transfer function is stable ?

Which of the systems having the following transfer function is stable ?

A. 1/(S2 + 2)
B. 1/(S2 – 2S + 3)
C. 1/(S2 + 2S + 2)
D. exp (-20 S)/(S2 + 2S – 1)

Read More Which of the systems having the following transfer function is stable ?
Process Control and Instrumentation

“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

“A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?

A. Bode stability
B. Nyquist
C. Routh stability
D. None of these

Read More “A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency.” This is _______________ criterion?
Process Control and Instrumentation

Zirconia probe is used for the measurement of___________________?

Zirconia probe is used for the measurement of___________________?

A. Humidity of air
B. % CO2 in flue gas
C. % O2 in flue gas
D. Speed of a submarine

Read More Zirconia probe is used for the measurement of___________________?
Process Control and Instrumentation

A pyranometer is an instrument used for measuring the___________________?

A pyranometer is an instrument used for measuring the___________________?

A. Beam radiation
B. Global radiation
C. Bright sunshine period
D. None of these

Read More A pyranometer is an instrument used for measuring the___________________?

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