1.4.2. Transformers

Try these first

1. 1.

   What is the primary function of a transformer?

   Hint

   Think of how they manage electricity between two circuits.

2. 2.

   What principle do transformers operate on?

   Hint

   Recall the concept of how magnets and electricity relate.

3. 3.

   What do transformers primarily do?

   • Change current
   • Step up or step down voltage
   • Control frequency

   Hint

   Think about the function of electrical devices in circuits.

4. 4.

   True or False: A transformer can operate with direct current.

   • True
   • False

   Hint

   Recall how transformers depend on changing conditions.

5. 5.

   A transformer steps down 480V to 120V. If the primary coil has 240 turns, how many turns will the secondary coil have?

   Hint

   Make sure to cross multiply and solve for the unknown turns!

6. 6.

   A factory uses a transformer to reduce the voltage from 600V to 240V. If the factory experiences an 80% efficiency, what is the output power if the input power is 1000W?

   Hint

   Remember to multiply the input power by the efficiency to find the actual output.