quiz 1.3

Remember] What is the main purpose of a transformer?

• A. Voltage boost
• B. Current boost
• C. Power factor correction
• D. Frequency conversion

[Understand] Which material is commonly used for the core of a transformer?

• A. Aluminum
• B. Copper
• C. Steel
• D. Iron

[Understand] What happens when an alternating current flows through the primary winding?

• A. Magnetic field is created
• B. Voltage is induced
• C. Current is amplified
• D. Capacitance is reduced

[Apply] A transformer has a turns ratio of 1:5. If the primary voltage is 120V, what is the secondary voltage?

• A. 24V
• B. 120V
• C. 500V
• D. 600V

[Apply] A transformer has a primary voltage of 480V and a turns ratio of 1:4. What is the secondary voltage?

• A. 60V
• B. 120V
• C. 240V
• D. 960V

[Analyze] How does a step-up transformer differ from a step-down transformer?

• A. Step-up transformers have more windings on the primary side
• B. Step-up transformers have more windings on the secondary side
• C. Step-up transformers have a higher turns ratio
• D. Step-up transformers have a lower turns ratio