Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability ?
Correct answer: B. Alcohol in glass thermometer
- A. Mercury in glass thermometer
- B. Alcohol in glass thermometer
- C. Fused metal (Na or K) in steel thermometer
- D. Nitrogen in steel thermometer
Explanation
Alcohol remains liquid at much lower temperatures than mercury, so an alcohol-in-glass thermometer has the lowest temperature range among these filled-system thermometers. The other devices are mainly suited to higher-temperature measurement.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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.
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
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_______________?
Water is entering a storage tank at a temperature T0 and flow rate Q0 and leaving at a flow rate Q and temperature T. There are negligible heat losses in the tank. The area of cross-section of the tank is A0. The model that describes the dynamic variation of temperature of water in the tank with time is given as________________?
The transfer function for a P-D controller is________________?
Working principle of mercury in glass thermometer is__________________?
"A control system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at the crossover frequency." This is _______________ criterion?
Which of the following cannot measure a temperature of 1600°C ?