Submitted by Uchelegit on Sun, 23/08/2020 - 11:23pm
Week 7 and 8
Topic: CELLS
Specific Objectives: By the end of the lesson, student should be able to
1. Define cell
2. Explain two types of cell
3. State two application of each type of cells
4. Explain the two defects/faults in a simple cell and how to prevent it.
5. Outline five ways you can maintain a lead acid cell.
CELLS
A cell is a device that converts chemical energy into electrical energy. A group of cell is called battery. A cell can be primary or secondary.
Components parts of cell
Submitted by Uchelegit on Sun, 23/08/2020 - 11:21pm
Week 6
Topic: Data and Communication Cables.
Specific Objectives: By the end of the lesson, student should be able to
1. Define data and communication cables
2. State and explain three types of data and communication cables
3. State advantages of coaxial and fibre optic cable
4. State disadvantages of fibre optic cable
DATA AND COMMUNICATION CABLES.
Data and communication cables are those cables designed to transmit electronic information from a source to a destination. Extensively used in computer and telecommunication system.
Submitted by Tansi College on Tue, 18/08/2020 - 7:21am
Week 3 and 4
Topic: Armoured Cable
Specific Objectives: By the end of the lesson, student should be able to
1. Define armoured cable
2. Mention main two types of armoured cable
3. State areas armoured cables can be applied
4. state four precaution to be taken when terminating PVC armoured cable
5. State two advantages of armouring cable over conduit
Armoured cable
Armoured cables are used where there is likelihood of mechanical damage to the conductor or insulation e.g underground cable run
Types of armoured cable
Submitted by Tansi College on Tue, 18/08/2020 - 7:16am
WEEK 2
Other sources of dangers
These are as follows:
1. Unprotected electric heaters
2. Over-loaded or over fused cables particularly flexes (ie flexible cable)
3. Unguarded crane trolley wires or bare overhead conductors, particularly where non-electrical worker are in the vicinity
4. Unprotected or unearthed socket outlets.
5. Poor or broken earth connections leading to live mental work under fault conditions.
Points of dangers for the electrician
