What voltage level defines a high-voltage system?

• Above 500V

• Above 1000V

• Above 1500V

• Above 230V

What is the standard voltage level in a single-phase system?

• 110–120V

• 200–210V

• 220–230V

• 380–400V

What unit is used to measure electrical current?

• Watt

• Volt

• Ampere

• kWh

What frequency is typical for hospital electrical systems?

• 40 Hz

• 45 Hz

• 50 Hz

• 60 Hz

What does the ground wire primarily protect against?

• Overvoltage

• Power surge

• Electric shock

• Short circuit

What is the voltage between Line to Neutral in a three-phase system?

• 380–400V

• 220–230V

• 100–110V

• 500–600V

Which system uses three Line wires and one Neutral wire?

• Single-phase

• Grounded system

• Three-phase system

• Emergency power

Which system is used for air conditioning and ventilation in hospitals?

• High voltage system

• Communication system

• Electrical system

• Fire protection system

What percentage of power is typically used by air conditioning in hospitals?

• 10–20%

• 25–30%

• 50–60%

• 70–80%

What is the backup power requirement for a 100-bed hospital?

• 300 KVA

• 400 KVA

• 500 KVA

• 600 KVA