Ferranti effect

Identify the phenomenon which causes overvoltage in long transmission lines

• Capacitive charging current
• Ferranti effect
• Voltage drop
• Inductive reactance

The Ferranti effect is more pronounced in which type of transmission lines?

• Short lines
• Medium lines
• Long lines
• High-voltage lines

In the Ferranti effect, what is the effect of increasing the length of the transmission line?

• Increases voltage drop
• Decreases voltage drop
• Increases capacitance
• Decreases capacitance

Which of the following is a consequence of the Ferranti effect in power systems?

• Overvoltage at the receiving end
• Overvoltage at the sending end
• Undervoltage at the receiving end
• Undervoltage at the sending end

What is the primary cause of the Ferranti effect?

• Capacitive reactance in long transmission lines
• Inductive reactance in long transmission lines
• High line resistance
• Voltage fluctuations

In a power system, the Ferranti effect is most likely to occur when there is a _____________

• Light load
• Heavy load
• Balanced load
• Unbalanced load

The Ferranti effect can be mitigated by using _____________

• Longer transmission lines
• Shorter transmission lines
• Higher voltage levels
• Lower voltage levels

What is the mathematical expression for the surge impedance of a transmission line?

• Zs = V/I
• Zs = V/(sqrt(3)*I)
• Zs = sqrt(3)*V/I
• Zs = sqrt(2)*V/I

In a transmission line, what is the effect of increasing the voltage level on the magnitude of the Ferranti effect?

• Decreases the magnitude of the Ferranti effect
• Increases the magnitude of the Ferranti effect
• Has no effect on the magnitude of the Ferranti effect
• Causes the Ferranti effect to disappear completely

The Ferranti effect is most pronounced in transmission lines operating at _____________

• Low power factors
• High power factors
• Low voltage levels
• High voltage levels