Quiz on Electrical Protection Systems

The primary purpose of an electrical protection system is to:

• Increase power generation

• Minimize system efficiency

• Detect and isolate faults

• Reduce energy losses

Which of the following is NOT a function of a protection system?

• Prevent damage to equipment

• Isolate faulty sections

• Enhance the operation of the faulty section

• Ensure safety of personnel

A short circuit is an example of a:

• Normal condition

• Fault condition

• Stable condition

• Desired condition

In normal conditions, the current in a circuit is:

• Zero

• Within the rated value

• Exceeds rated value

• Infinite

What is the primary function of a fuse?

• To measure voltage

• To break the circuit during overload conditions

• To isolate healthy parts of the system

• To convert AC to DC

Which type of fuse is typically used in high-voltage applications?

• Cartridge fuse

• HRC fuse

• Rewireable fuse

• Miniature fuse

The melting time of a fuse depends on:

• Voltage rating

• Current rating

• Power rating

• Temperature

An isolator is operated:

• Under load

• During fault conditions

• When the circuit is de-energized

• Continuously

The primary function of an isolator in a protection system is to:

• Protect against overcurrents

• Break high voltage arcs

• Provide mechanical isolation for maintenance

• Measure voltage

Re-striking voltage is:

• The voltage at which the arc re-ignites after interruption

• The voltage drop across a resistor

• The voltage at which the circuit breaker closes

• None of the above