The phenomenon of rising in voltage at the receiving end of the open-circuited or lightly loaded line is called the

A. Seeback effect
B. Ferranti effect
C. Raman effect
D. none of the above.

Answer: B. Ferranti effect

Explanation:

Ferranti Effect: 

• At no load (or) at light load, the voltage at the receiving end of the transmission line is more than the sending voltage. It is known as the Ferranti effect. 
• It is due to the charging current of the line.

How to reduce Ferranti effect:

• This effect can be controlled by placing the shunt reactors at the receiving end of the lines.
• A shunt reactor is an inductive current element connected between line and neutral to compensate for the capacitive current from transmission lines.
• Synchronous phase modifier(SPM) is used as under excitation it works similarly to shunt reactor which absorbs lagging reactive power and delivers leading reactive power.