Power Factor Correction Quiz

What is the main advantage of improving the power factor of an installation according to the document?

• It allows for the use of smaller transformers.

• It increases the energy consumption.

• It requires more frequent maintenance.

• It reduces the efficiency of the installation.

What is the tan φ ratio used for in the context of power factor correction?

• To calculate the active energy consumed.

• To determine the amount of reactive energy billed.

• To measure the efficiency of the installation.

• To assess the environmental impact.

What happens when the reactive energy represents less than 40% of the active energy during the most-heavily loaded period of 16 hours each day?

• The power supply authority delivers reactive energy for free.

• The consumer is charged extra for the reactive energy.

• The installation requires immediate maintenance.

• The power factor is considered to be optimized.

What is the purpose of power factor correction according to the document?

• To increase the power supply authority's revenue.

• To reduce the electricity bill by maintaining the level of reactive-power consumption below a certain value.

• To simplify the power distribution network.

• To increase the active energy consumption.

What is the effect of a power factor correction to 0.93 during limitation periods?

• The consumer will have nothing to pay for the reactive power consumed.

• The consumer will be charged for the full amount of reactive power consumed.

• The power factor will be considered too high and penalized.

• The installation will require more frequent maintenance.

According to the document, what is the multiplying factor for the cross-sectional area of the cable as the power factor is reduced from unity to 0.4?

By how much can the losses in cables be reduced if the total current in a conductor is reduced by 10%?

• 10%

• 20%

• 30%

• 40%

What is a potential consequence of overcompensation in power factor correction?

• Reduction in energy consumption

• Voltage drop in upstream conductors

• Voltage rise at the equipment level

• Decrease in available power

What is one of the benefits of improving the power factor of a load supplied from a transformer?