Step Down Transformer Calculations

The video tutorial explains the basic principles of transformers, focusing on how they change voltage and current. It demonstrates calculations for output voltage, number of turns, and current on both primary and secondary sides using specific formulas. The tutorial emphasizes the importance of power consistency across the transformer and concludes with a summary of the key points covered.

What is the secondary voltage if a transformer with 1000 primary turns and 100 secondary turns is supplied with 120 volts?

• 12 volts

• 24 volts

• 120 volts

• 240 volts

If you know the output voltage and the number of turns, what can you calculate?

• The secondary current

• The efficiency of the transformer

• The input voltage

• The power on the primary side

How can you find the number of turns on the secondary side if you know the primary turns and both voltages?

• By using the efficiency ratio

• By using the power ratio

• By using the current ratio

• By using the voltage ratio

What is the primary current if the secondary current is 1.2 amps?

• 0.12 amps

• 1.2 amps

• 12 amps

• 0.012 amps

How do you verify that the power is the same on both sides of a transformer?

• By checking the current ratio

• By measuring the efficiency

• By checking the voltage ratio

• By multiplying voltage and current on both sides