AC Distribution and Emergency Supply Quiz

What device automatically opens a circuit in case of overcurrent?

• Switch

• Circuit Breaker

• Relay

• Transformer

What type of breaker is most common for small circuits?

• MCCB

• AQCB

• SFU

• VCB

What does the Emergency Switchboard supply?

• Non-essential services

• Essential services

• Entertainment systems

• Kitchen equipment

If a generator fails, which equipment starts automatically?

• Fire pump

• Emergency generator

• Battery charger

• Fuel purifier

How fast must the Emergency Generator supply power after blackout?

• 30 seconds

• 1 minute

• 5 minutes

• 10 minutes

What is the purpose of the Hand Change Over Switch (HCOS)?

• Start generators automatically

• Switch between normal and alternative supplies

• Control cooling fans

• Adjust generator speed

What is the function of Breaker Discrimination?

• Increase voltage

• Only trip faulty circuit

• Decrease generator speed

• Boost frequency

What type of power supply does a static converter produce?

• Heat

• Oil pressure

• DC or different AC output

• Fresh water

What is a rotary converter used for?

• Storage

• Power conversion

• Lubrication

• Cooling

A transformer uses which principle?

• Static electricity

• Magnetic induction

• Hydraulic pressure

• Pneumatic force