Transmission efficiency and voltage regulation, real and reacti

Which of the following statements is true regarding the voltage regulation of a transmission line?

• A) It is the ratio of the sending-end voltage to the receiving-end voltage.
• B) It is the ratio of the receiving-end voltage to the sending-end voltage.
• C) It is the difference between the sending-end voltage and the receiving-end voltage.
• D) It is the sum of the sending-end voltage and the receiving-end voltage.

Which of the following is NOT a factor affecting the transmission efficiency of a power line?

• A) Conductor material
• B) Line length
• C) Load current
• D) Frequency of the AC signal

Which of the following types of power flow contributes to voltage drop in a transmission line?

• A) Real power flow
• B) Reactive power flow
• C) Both real and reactive power flow
• D) None of the above

What is the mathematical relationship between real power, reactive power, and apparent power?

• A) Apparent power = Real power + Reactive power
• B) Apparent power = Real power - Reactive power
• C) Apparent power = Real power x Reactive power
• D) There is no mathematical relationship between these quantities

If a transmission line has a voltage regulation of 5%, what is the percentage voltage drop between the sending-end and the receiving-end of the line?

• A) 5%
• B) 10%
• C) 95%
• D) 105%