Basic Transformer Calculations

The video tutorial covers the basics of transformers, focusing on step down and step up types. It explains how to calculate voltages, turns, and currents using specific formulas. The tutorial also emphasizes the importance of power balance in transformers and provides examples to illustrate these concepts.

If a transformer has 1000 turns on the primary and 100 turns on the secondary, and the primary voltage is 120 volts, what is the secondary voltage?

• 12 volts

• 120 volts

• 240 volts

• 10 volts

How can you find the primary current if the secondary current is 1.2 amps in a transformer?

• By using the current ratio

• By using the voltage ratio

• By using the power ratio

• By using the turns ratio

What is the primary current if the secondary current is 1 amp and the transformer is a step-up type?

• 1 amp

• 1.5 amps

• 0.5 amps

• 2 amps

In a step-up transformer with 100 turns on the primary and 200 on the secondary, what is the secondary voltage if the primary voltage is 120 volts?

• 240 volts

• 60 volts

• 360 volts

• 120 volts

What principle ensures that the power is the same on both sides of a transformer?

• Power conservation

• Energy conservation

• Current conservation

• Voltage conservation