Temporary over voltages

What causes temporary overvoltages in the power system?

• a) Lightning strikes

• b) Faults and short circuits

• c) Capacitor switching

• d) Generator malfunctions

How do temporary overvoltages affect the power system?

• a) Increase power system stability

• b) Decrease power system losses

• c) Cause insulation breakdown and equipment damage

• d) Create voltage sags

Which of the following is an effect of temporary overvoltages on the power system?

• a) Increased power transmission efficiency

• b) Reduced line losses

• c) Increased system reliability

• d) Damage to sensitive electronic devices

Which equipment in the power system is most vulnerable to temporary overvoltages?

• a) Transformers

• b) Circuit breakers

• c) Insulators

• d) Power cables

How can the effects of temporary overvoltages be mitigated in the power system?

• a) Installing surge arresters

• b) Increasing power generation capacity

• c) Using voltage regulators

• d) Reducing power demand

What is the primary cause of temporary overvoltages in the power system?

• a) Lightning strikes

• b) Load fluctuations

• c) Faulty equipment

• d) Generator malfunctions

How do temporary overvoltages impact power system equipment?

• a) Enhance equipment efficiency

• b) Increase equipment lifespan

• c) Cause insulation deterioration

• d) Improve power quality

What is the typical duration of a temporary overvoltage event in the power system? a) A few milliseconds b) Several seconds c) Minutes d) Hours

• a) A few milliseconds

• b) Several seconds

• c) Minutes

• d) Hours

Which of the following is a method to reduce temporary overvoltages?

• a) Implementing load shedding

• b) Utilizing surge protectors

• c) Installing fault current limiters

• d) Adjusting power factor

What measures can be taken to protect sensitive equipment from temporary overvoltages?

• a) Implementing voltage regulators

• b) Using transient voltage suppressors

• c) Conducting regular maintenance of equipment

• d) Increasing power factor of the system