Process Control

Question 1

1. Which of the following is an undesirable dynamic characteristic of an instrument?
   a. Reproducibility
   b. Dead zone
   c. Time lag
   d. Static error

Answer 1

C

Question 2

2. Which of the following is not the triple point of water?
   a. 32°R
   b. 273°K
   c. 492°R
   d. 32°F

Answer 2

A

Question 3

3. Pick out the one which is a first order instrument.
   a. Mercury in glass thermometer (without any covering or air gap).
   b. Bare metallic thermometer.
   c. Bare vapor pressure thermometer.
   d. All (a), (b) and (c).

Answer 3

D