Which is the most suitable instrument for measuring pressure below 3 microns ?
Correct answer: D. Ionisation gauge
- A. Mcleod gauge
- B. Alphatron
- C. Bourdon gauge
- D. Ionisation gauge
Explanation
An ionisation gauge is designed for very low pressures in the micron and sub-micron range by measuring ions produced in the gas. Bourdon gauges work at much higher pressures, while McLeod gauges are less convenient for continuous measurement.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Process Control and Instrumentation
254 free Process Control and Instrumentation MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Process Control and Instrumentation questions
Which of the following controllers has maximum offset ?
Working principle of radiation pyrometer is based on the __________________?
Presence of a small amount of water in the organic systems can be determined by the _____________ method?
______________ is undesirable in thermocouples used in industries ?
Which of the following relates the absorption & evolution of heat at the junctions of a thermocouple to the current flow in the circuit ?
Polarisation of light forms the working principle of a______________?