Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature
Options
A. emf produced is very low of the order of microvolt.
B. embrittlement of iron occurs.
C. rusting of iron takes place.
D. both (b) and (c).
Correct Answer
both (b) and (c).
More questions
1. Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is
Options
A. more
B. less
C. same
D. cither (a) or (b); depends upon the I.D. of the pipe