141 S20 A1

The rectifier charges the batteries to maintain power and converts the incoming power from .

• High voltage to low voltage.
• Low voltage to high voltage.
• AC to DC.
• DC to AC.

The inverter converts the for use with electrical equipment.

• High voltage to low voltage.
• Low voltage to high voltage.
• AC to DC.
• DC to AC.

In standby UPS what is the inverter’s normal state?

• Turned off.
• Turned on.
• Switches on and off due to AC supply.
• Doesn’t have an inverter.

An inverter is an electronic device or circuitry that changes alternating current (AC) to direct current (DC).

• True.
• False.

What is the bypass used for in an Online UPS?

• To provide power directly to equipment from the power source .
• To switch from the AC power source to battery.
• For maintenance safety or an internal electronics failure.
• All of the choices

What is not a main component of UPS?

• Battery
• Inverter
• Rectifier
• Transformer

How many Diodes are there in Halfwave rectifier?

• One
• Two
• Three
• Four

How many Diodes are there in Full wave rectifier?

• One
• Two
• Three
• Four

How many Diodes are there in Full wave bridge rectifier?

• One
• Two
• Three
• Four

What type of UPS is also called double conversion UPS?

• Offline UPS
• Line interactive UPS
• Online UPS
• No UPS