ELEC433 - Quiz 1

Select the correct missing words from the following definition: "Power electronics covers the _________, _______, and __________ of electrical energy using semiconductor devices"

• control

• detection

• conversion

• switching

• reduction

The power electronics device that converts a DC voltage to an AC voltage is called:

• rectifier

• inverter

• DC converter

• AC converter

The 3-pulse rectifier is rarely used in practice because:

• uses the neutral wire for the return current

• it is very expensive

• requires an inductive load connected to its output

• only draws a uni-directional current from each supply line

The six-pulse rectifier consists of two three-pulse circuits connected back-to-back. What is the phase shift between the ripple components of the two three-pulse circuits:

• 30°

• 60°

• 120°

• 180°