ELECTRO BY CHAT GPT

Which voltage level is typically considered as marine high voltage?

• A) 500 volts
• B) 750 volts
• C) 1000 volts AC or higher
• D) 1500 volts AC or higher

Which international organization provides standards for electrical, electronics, and related technologies?

• A) IEEE
• B) ISO
• C) IEC
• D) ANSI

IEC 62271 (1-99) series covers what aspect of high-voltage switchgear?

• A) General requirements
• B) Circuit protection
• C) Power transformers
• D) Earthing systems

What is a major benefit of using high voltage in marine applications?

• A) Reduced installation costs
• B) Increased cabling requirements
• C) Higher maintenance
• D) Increased weight of equipment

What is the purpose of earthing down before working with high voltage systems?

• A) To connect the system to a power source
• B) To safely discharge residual charge
• C) To increase system voltage
• D) To isolate the system

Higher insulation resistance in high voltage systems helps to reduce the effects of:

• A) Resistance
• B) Capacitance
• C) Inductance
• D) Voltage drop

Which device is commonly used for busbar earthing?

• A) Circuit breaker
• B) Earthing switch
• C) Capacitor
• D) Fuse

HV arcing occurs when:

• A) An arc forms between two separate conductors
• B) Current flows in a closed circuit
• C) Air ionizes around a conductor
• D) A switch is closed

Which phenomenon primarily involves light and heat from an electrical fault?

• A) Arc blast
• B) Corona discharge
• C) Arc flash
• D) Short circuit

What is the main hazard associated with an arc blast?

• A) Intense light
• B) High temperatures
• C) Pressure wave and shrapnel
• D) Voltage drop