Basic Electricity 2, WASSCE (PC), 2016

Question 5

 

  • State three conditions for selecting cables to be used for installation.
  • State two reasons for transmitting electricity by overhead conductors

Observation

The expected answers were;

(a)       Conditions for selecting cables to be used for installation
-  The current rating of the cable under defined installation conditions.
-   The type of installation project.
-   Environmental condition.
-  The type of load to be supplied.

(b)       Reasons for transmitting electricity by overhead conductors
-  It is cheaper to install.
-  Easy to carry out maintenance.
-  Easy to detect fault.
- It can transmit more power.
- Cheaper to repair.

- Long distance transmission

Candidates did not perform well in this question.