um it is me
control action independent of the output or desired quantity
economic order quantity contributes to the control of stock
The quantity of goods that buyers demand are determined by the control and means witch they were contained or dispatched eg. manual/automated and QC. (quality control)
Central banks control the quantity of money in circulation by printing more bills when the central storage is low and refraining from printing when the country is suffering from inflation.
Traditionally dampers are used to control the quantity of air entering the boiler. If we use VFD for FD fan, we can control the quantity of air be changing speed of fan using VFD. This will save energy.
yes
A design variable is any quantity or choice directly under the control of the designer.
Because, by doing one you're giving up the other, for example, if you reduce the price you will sell more as a consequence, but if you increase the price, the quantity sold will decrease. They both impact each other.
The quantity variance is often more useful for control purposes because it directly reflects operational efficiency and productivity. Changes in quantity can indicate issues such as production inefficiencies, labor problems, or supply chain disruptions, which can be addressed to improve performance. In contrast, price variance may be influenced by external factors like market fluctuations, making it less actionable for internal control. Focusing on quantity allows managers to identify specific areas for improvement and implement corrective measures more effectively.
just it control the quantity of air supplied to burner .It is also called as damper.
The automatic combustion control, or ACC, of boilers designed for shipping, is a unit that contains a programmable sequence control to operate the pilot burner, furnace purge, and the burner piston valve. It also transmits the automatic adjustment commands for the correct combustion of air quantity and fuel oil quantity.
a. control d. law c. theory d. variable