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Transformator

About points...

We associate a certain number of points with each exercise.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.

That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.

About difficulty...

We associate a certain difficulty with each exercise.
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.

That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:

Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise

Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise

Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise

Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise

Level 5 -
Level 6 -

Exercise

https://texercises.com/exercise/transformator/

Question

Solution

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Exercise:
Ein Transformator hat primär numpr Windungen sekundär Windungen und der Wirkungsgrad sei .%. abcliste abc Welche Spannung liefert der Trafo sekundär wenn die Primärspannung pqV beträgt? abc An die Sekundärspannung sei eine Klingel angeschlossen die einen Strom von pq.A zieht. Wie gross ist der Primärstrom? abc Wie viel Prozent der vom elektrischen Netz bezogenen Leistung verbraucht der Transformator? abcliste

Solution:
abcliste abc Die Sekundärspannung beträgt U_ fracN_N_U_ pq.V. abc Die Leistung die für die Klingel bereitgestellt werden muss ist P_ U_I_ pq.W. Da der Transformator einen Wirkungsgrad von .% wird das elektrische Netz mit einer Leistung von P_ fracP_eta pq.W belastet. Bei einer Spannung von pqV entspricht das einem Strom von pqmA. abc Der Transformator verbraucht .% der bezogenen Leistung. abcliste

Meta Information

\(\LaTeX\)-Code

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Attributes & Decorations

Branches	Work, Energy, Power
Tags	elektromagnetismus, induktion, leistung, physik, transformator, wirkungsgrad
Content image
Difficulty	(2, default)
Points	3 (default)
Language	(Deutsch)
Type	Calculative / Quantity
Creator	uz
Decoration
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