AC/DC Power Supply Quiz

What is the usual waveform of an AC power circuit?

• Triangular

• Sawtooth

• Square

• Sine

In 1887, which type of electricity was predominant in the United States?

• Sawtooth

• DC

• AC

• Triangular

What is the usual unit for expressing AC voltage?

• VDC

• Vpeak

• Veff

• Vrms

What is the function of a transformer in a circuit?

• To increase DC voltage

• To decrease AC voltage

• To increase AC voltage

• To decrease DC voltage

What is the purpose of a rectifier in a circuit?

• To convert DC to AC

• To convert AC to DC

• To decrease voltage

• To increase voltage

What is the disadvantage of a full-wave rectifier?

• Voltage loss of 3.2V

• Voltage loss of 0.8V

• Voltage loss of 2.6V

• Voltage loss of 1.4V

What is the purpose of smoothing in a power supply circuit?

• To convert AC to DC

• To decrease ripple voltage

• To convert DC to AC

• To increase ripple voltage

What factors affect the amount of ripple in a power supply circuit?

• Frequency of the circuit

• Ripple voltage

• Price of components

• Availability of components

What is the reason for having regulation in a power supply circuit?

• To increase ripple voltage

• To convert AC to DC

• To decrease ripple voltage

• To maintain a constant voltage

What is the unit for expressing the physical frequency of an AC circuit?

• Hertz

• Radian per second

• Ampere

• Volt