Electrical Cable Testing Quiz

What is the function of black bitumen tape in underground high and medium voltage cables?

• To enhance cable flexibility

• To provide mechanical protection

• To prevent water from entering the conductor core

• To increase electrical conductivity

What is the purpose of cable marking?

• To identify cable phase

• To indicate cable temperature rating

• To facilitate cable maintenance

• To determine cable resistance

What is the main function of a cable termination?

• To reduce cable resistance

• To increase cable length

• To connect cables to equipment

• To prevent electrical leakage

What is the basic requirement for a cable joint or termination?

• Loose enclosure

• Low mechanical stress resistance

• Effective insulation

• High thermal conductivity

Which technique is used for cable jointing that involves heat-induced shrinking of a material?

• Cold pour resin

• Heatshrink

• Pre-moulded joints

• Taped joints

What is the purpose of cable markers in underground cable installations?

• To indicate cable phase

• To identify cable manufacturer

• To improve cable flexibility

• To enhance cable conductivity

What is the main objective of the insulation resistance test for underground cables?

• To detect cable faults

• To measure cable length

• To evaluate cable insulation condition

• To assess cable flexibility

What is the voltage level typically used for the pressure test on underground cables?

• 3000V

• 2000V

• 500V

• 1000V

What is the primary function of the pressure test set in cable testing?

• To assess cable insulation integrity

• To evaluate cable flexibility

• To detect cable temperature

• To measure cable resistance

What is the recommended safety step before conducting a cable pressure test?

• Disconnect all fuses

• Increase the voltage level

• Remove the grounding rod

• Turn on all power sources