live & dead zero

1. What is ‘live zero’?
a) Output zero for zero input
b) Output non zero for zero input
c) Output null for all input
d) Output unpredictable
Answer: Output non zero for zero input

Dead zone is the
a) Same as time constant
b) Same as transportation lag
c) Maximum change in the variable that does not change the reading of the instrument
d)  None of these
Answer: Maximum change in the variable that does not change the reading of the instrument