Proportional band of a controller is defined as the range of

1.	Proportional band of a controller is defined as the range of
A.	measured variables from set value
B.	measured variables through which the air output changes from maximum to minimum
C.	air output as measured variable varies from maximum to minimum
D.	none of these
Answer» C. air output as measured variable varies from maximum to minimum

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Proportional band of a controller is defined as the range of

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