Electrical Engineering XYZ MCQs
Characteristics of arc quenching medium include:
- Non flammable
- High dielectric strength
- High thermal conductivity
- All of these
Correct answer: 4. All of these
Explanation: Arc quenching medium refers to the substance or material used to extinguish or suppress electrical arcs that may occur in electrical equipment. The characteristics of a suitable arc quenching medium typically include:
- Non flammable: The medium should not be easily combustible to ensure safety during electrical operations. This characteristic helps in preventing the escalation of electrical faults into fires.
- High dielectric strength: Dielectric strength refers to the ability of a material to withstand electrical stress without breaking down. A high dielectric strength is important to maintain insulation and prevent electrical breakdown or arcing.
- High thermal conductivity: High thermal conductivity helps in dissipating the heat generated during an electrical arc quickly. Efficient heat dissipation is crucial for preventing damage to equipment and maintaining the stability of the electrical system.
Therefore, all of the mentioned characteristics are important for an effective arc quenching medium.