
Cwestiynau Effeithlonrwydd
Authored by Ryan Newcombe
Physics
9th Grade

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa un o'r canlynol sydd yn cynrichioli y fformiwla ar gyfer effeithlonrwydd (Eff.)? Rhowch gylch o amgylch yr ateb cywir.
2.
OPEN ENDED QUESTION
3 mins • 1 pt
Mae peiriant yn cymryd 1 KJ o egni ac yn cynhyrchu 800J o allbwn egni defnyddiol. Cyfrifwch ei effeithlonrwydd.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
Mae modur yn newid 800J o egni mewnbwn trydanol i 600J o egni mecanyddol defnyddiol. Cyfrifwch ei effeithlonrwydd.
Evaluate responses using AI:
OFF
4.
OPEN ENDED QUESTION
3 mins • 1 pt
Mae tyrbin gwynt yn derbyn 10 KW o bwer o'r gwynt ac yn ei newid i 7KW o bwer trydanol. Cyfrifwch ei effeithlonrwydd.
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
Mae teledu yn cymryd 800J o egni trydanol mewnbwn ac yn ei newid i 200J o egni sain a 400J o egni golau yn y sgrin. Cyfrifwch ei eiffeithlonrwydd.
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6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa un o'r canlynol sydd yn cynrichioli y fformiwla ar gyfer egni defnyddiol? Rhowch gylch o amgylch yr ateb cywir (Cliw: Ail-drefnwch y fformiwla ar gyfer effeithlonrwydd!)
7.
OPEN ENDED QUESTION
3 mins • 1 pt
Mae modur yn newid 600J o egni trydanol i fewn i egni mecanyddol gyda effeithlonrwydd o 80%. Cyfrifwch ei egni defnyddiol.
Evaluate responses using AI:
OFF
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