Electricity and Voltage Quiz

What voltage is used for lighter industry and distribution to towns and villages?

• 11 kV

• 33 kV

• 132 kV

• 230 V

Which part of the transmission tower is directly connected to the ground?

• Cross arms

• Earth wire

• Insulators

• Tower

Which of the following is a characteristic of underground cables?

• They are always used in rural areas

• They do not require any insulating material

• They are surrounded by a protecting cover

• They are used for cooling purposes

What is the main reason for ensuring the proper size of conductors in underground cables?

• To reduce manufacturing costs

• To carry the required load without over-heating

• To make the cables lighter

• To improve the appearance of the cables

What should the size of conductors in underground cables prevent?

• Voltage drop more than the permissible limits

• Increase in cable length

• Decrease in cable flexibility

• Increase in cable weight

What is the purpose of using materials with complete chemical and physical stability in cables?

• To reduce cost

• To ensure durability and reliability

• To make the cables lighter

• To improve appearance

What type of conductors are used to ensure flexibility in underground cables?

• Solid conductors

• Stranded conductors

• Hollow conductors

• Coated conductors

Compared to overhead lines, the underground system of electrical distribution is:

• Less costly

• More costly

• Equally costly

• Free of cost

Why is ensuring the continuity of supply to consumers critical?

• To reduce costs

• To maintain power supply

• To increase profits

• To reduce pollution

What is one of the reasons for the reduced risk of electrocution with underground cables?

• They are harder to access

• They are more visible

• They are above ground

• They are less maintained