Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- sandbox [2023/03/21 09:40] – mexleadmin
+++ sandbox [2023/03/29 11:38] (aktuell) – mexleadmin
@@ Zeile 1: / Zeile 1: @@
+#@TaskTitle_HTML@#~~#.#7.#~~  Power loss and efficiency II     #@TaskText_HTML@#
+A water pump ($\eta_\rm P = 60~\%$) has an electric motor drive ($\eta_\rm M=90~\%$).
+The pump has to pump $500~{\rm l}$ water per minute up to $12~{\rm m}$ difference in height.
+  * What must be the rated power of the motor?
+  * What current does the motor draw from the $230~{\rm V}$ mains? (assumption: the $230~{\rm V}$ is a DC value and also the current is DC)
+#@TaskEnd_HTML@#
+#@TaskTitle_HTML@#~~#.#.#~~  Power loss and efficiency II     #@TaskText_HTML@#
+A water pump ($\eta_\rm P = 60~\%$) has an electric motor drive ($\eta_\rm M=90~\%$).
+The pump has to pump $500~{\rm l}$ water per minute up to $12~{\rm m}$ difference in height.
+  * What must be the rated power of the motor?
+  * What current does the motor draw from the $230~{\rm V}$ mains? (assumption: the $230~{\rm V}$ is a DC value and also the current is DC)
+#@TaskEnd_HTML@#
+<panel type="info" title="Exercise 1.7.4 Power loss and efficiency II"> <WRAP group><WRAP column 2%>{{fa>pencil?32}}</WRAP><WRAP column 92%>
+A water pump ($\eta_\rm P = 60~\%$) has an electric motor drive ($\eta_\rm M=90~\%$).
+The pump has to pump $500~{\rm l}$ water per minute up to $12~{\rm m}$ difference in height.
+  * What must be the rated power of the motor?
+  * What current does the motor draw from the $230~{\rm V}$ mains? (assumption: the $230~{\rm V}$ is a DC value and also the current is DC)
+</WRAP></WRAP></panel>
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