3.2. Efficiency

Try these first

1. 1.

   What does efficiency in a high-power circuit measure?

   Hint

   Think about how much power is actually used.

2. 2.

   Define input power.

   Hint

   Consider what goes into the circuit.

3. 3.

   What is the formula for calculating efficiency?

   Hint

   Recall the ratio of output to input.

4. 4.

   True or False: Higher efficiency means lower operating costs.

   Hint

   Think about waste energy.

5. 5.

   An industrial motor operates at an input power of 1000 W and outputs 850 W. If the operating temperature is considerably high, analyze how increased temperature might affect the motor's lifespan and performance.

   Hint

   Consider how excess heat impacts the materials used.

6. 6.

   Design an efficient power supply circuit for a small solar panel system. Discuss how you would ensure high efficiency from solar input to actual power delivered to a load.

   Hint

   Think about every step of energy conversion in the system.