Unit - 1 FACTS introduction

What is the main purpose of reactive power in a power system?

• To improve power factor

• To increase real power

• To reduce transmission losses

• To regulate voltage

Which of the following affects real power flow in a transmission line?

• Voltage magnitude

• Line impedance

• Voltage phase angle

• Both B and C

How can reactive power be supplied to a transmission line?

• Capacitors

• Inductors

• Generators

• All of the above

What happens when reactive power demand increases in a system?

• Voltage increases

• Voltage decreases

• Frequency increases

• Power factor improves

Which device is primarily used to control reactive power in a power system?

• Circuit breaker

• Synchronous condenser

• Transformer

• Relay

In an uncompensated transmission line, the voltage drop is mainly due to which factor?

• Load current

• Line resistance

• Line reactance

• All of the above

What is a major drawback of an uncompensated transmission line?

• High power factor

• Poor voltage regulation

• Low line losses

• Reduced real power flow

Which of the following is a characteristic of an uncompensated transmission line?

• High voltage stability

• Increased line losses

• Controlled power flow

• Reduced power transfer capacity

What is the primary purpose of shunt compensation in a power system?

• To reduce line resistance

• To provide reactive power support

• To improve line impedance

• To increase active power transfer

Series compensation in a transmission line primarily affects:

• Voltage profile

• Line current

• Line reactance

• Load power factor