TRANSFORMERS #1
Flashcard
•
Science
•
12th Grade - University
•
Practice Problem
•
Hard
Standards-aligned
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a transformer?
Back
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
2.
FLASHCARD QUESTION
Front
What is the primary function of a step-up transformer?
Back
A step-up transformer increases voltage while decreasing current.
Tags
NGSS.HS-PS3-5
3.
FLASHCARD QUESTION
Front
What is the primary function of a step-down transformer?
Back
A step-down transformer decreases voltage while increasing current.
4.
FLASHCARD QUESTION
Front
What is the formula for transformer turns ratio?
Back
Turns ratio = Primary turns / Secondary turns.
5.
FLASHCARD QUESTION
Front
If the primary voltage is 120 VAC and the secondary voltage is 60 VAC, what is the turns ratio?
Back
The turns ratio is 2:1.
6.
FLASHCARD QUESTION
Front
What happens to current in a step-up transformer?
Back
Current decreases in a step-up transformer.
7.
FLASHCARD QUESTION
Front
What happens to current in a step-down transformer?
Back
Current increases in a step-down transformer.
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