6.6.2. DC-AC Inverters

Try these first

1. 1.

   What does DC stand for?

   Hint

   Think about battery power.

2. 2.

   What is the primary function of a DC-AC inverter?

   Hint

   What power source do homes usually use?

3. 3.

   What does a DC-AC inverter do?

   • Converts AC to DC
   • Converts DC to AC
   • Converts AC to AC

   Hint

   Consider the power type used in your home.

4. 4.

   True or False: UPS systems use inverters to provide backup power.

   • True
   • False

   Hint

   Think about what happens during power loss.

5. 5.

   A DC source rated at 24V is connected to a DC-AC inverter that outputs a sine wave. If the inverter is designed to output 120V AC, how would you calculate the efficiency of energy conversion if the inverter uses 50W?

   Hint

   Consider the ratio of output to input power.

6. 6.

   A UPS system rated for 500VA can run a load of 400W for how long if the battery has a capacity of 1000Wh? What factors need to be considered?

   Hint

   Think about the capacity versus the load.