Improvement of string efficiency

What is the method of increasing string efficiency by using longer insulators?

• Pin Insulators
• Suspension Insulators
• Strain Insulators
• Longer Insulators

Which of the following is not a method to improve string efficiency?

• Using Shorter Insulators
• Increasing the Number of Insulators
• Changing the Insulator Material
• Using Corona Rings

What is the benefit of using corona rings in insulator strings?

• Reducing Corona Losses
• Increasing Capacitance
• Reducing Voltage
• Reducing Current

Which type of insulator has a higher string efficiency?

• Pin Insulators
• Suspension Insulators
• Both have the same string efficiency
• None of the above

What is the benefit of using grading rings in insulator strings?

• Reducing Voltage Stress
• Increasing Voltage Stress
• Reducing Current
• Reducing Corona Losses