Qualification Code :071306T4EEN
Qualification :ELECTRICAL ENGINEERING (POWER OPTION) LEVEL 6
Unit Code :ENG/OS/PO/CC/02/6
Unit of Competency : PERFORM WORKSHOP PROCESSES
EEL6 24S
March 2025
KISIWA TECHNICAL TRAINING INSTITUTE
MARKING SCHEME
Time: 3 Hours
INSTRUCTIONS TO ASSESSOR
1. Marks for each question are indicated in the brackets.
2. The paper consists of sections A and B.
3. Do not write on the question paper.
SECTION A (40 MARKS)
1. Explain two hazards that may arise in faulty electrical equipment. (4 marks)
a) Electric shock – May result from exposed live wires or faulty insulation. (2 marks)
b) Electrical fire – Caused by short circuits or overheating. (2 marks)
2. List four regulations governing health and safety at the workplace. (4 marks)
a) Use of Personal Protective Equipment (PPE). (1 mark)
b) Provision of safety training to workers. (1 mark)
c) Proper labeling of hazardous areas/materials. (1 mark)
d) Safe storage and handling of tools and chemicals. (1 mark)
3. Outline the procedure to rescue an individual electrocuted in an electrical workshop. (4
marks)
a) Switch off the power supply immediately. (1 mark)
b) Use a non-conductive object to separate the victim. (1 mark)
c) Call for emergency medical assistance. (1 mark)
d) Administer first aid or CPR if qualified. (1 mark)
4. List any four items that should be found in a First-Aid Box. (4 marks)
a) Sterile gauze pads. (1 mark)
b) Antiseptic solution or wipes. (1 mark)
c) Bandages or plasters. (1 mark)
d) Scissors or tweezers. (1 mark)
5. State the use of the following workshop tools and equipment. (4 marks)
a) Draw wire – Pulling wires through conduits. (1 mark)
b) Stock and die – Threading pipes and rods. (1 mark)
c) Wrenches – Tightening/loosening bolts and nuts. (1 mark)
d) Combination pliers – Cutting, gripping, and bending wires. (1 mark)
6. Outline the procedure for carrying out the insulation resistance test. (4 marks)
a) Disconnect power and all loads. (1 mark)
b) Connect megger between conductor and earth. (1 mark)
c) Operate the megger and record the reading. (1 mark)
d) Compare reading with standard value. (1 mark)
7. State three reasons why instruments should be calibrated. (3 marks)
a) Ensure measurement accuracy. (1 mark)
b) Meet regulatory requirements. (1 mark)
c) Detect wear or drift in performance. (1 mark)
8. State five advantages of a digital voltmeter. (5 marks)
a) High accuracy. (1 mark)
b) No parallax error. (1 mark)
c) Clear digital display. (1 mark)
d) Low power consumption. (1 mark)
e) Auto-ranging capabilities. (1 mark)
9. Outline four regulations governing electrical and electronic waste disposal. (4 marks)
a) Segregation of hazardous and non-hazardous waste. (1 mark)
b) Use of authorized recycling and disposal centers. (1 mark)
c) Proper labeling and documentation of waste. (1 mark)
d) Prohibition of dumping e-waste in landfills. (1 mark)
10. Explain the main reason for earthing electrical equipment. (2 marks)
To provide a safe path for fault currents to flow to the ground, protecting users from
electric shocks. (2 marks)
11. State any two reasons for inventory record keeping. (2 marks)
a) To monitor availability and usage of tools/equipment. (1 mark)
b) To minimize loss or theft. (1 mark)
SECTION B (60 MARKS)
13 a) Explain six proper dressing codes for an electrical workshop. (6 marks)
Safety boots. (1 mark)
Overalls. (1 mark)
Helmet. (1 mark)
Gloves. (1 mark)
Safety goggles. (1 mark)
Ear protectors. (1 mark)
b) Outline six elements of a standard workshop inventory list. (6 marks)
Item name. (1 mark)
Item code. (1 mark)
Description. (1 mark)
Quantity. (1 mark)
Location. (1 mark)
Status. (1 mark)
c) List eight common sources of accidents in the industry. (8 marks)
Wet floors. (1 mark)
Exposed live wires. (1 mark)
Faulty equipment. (1 mark)
Lack of signage. (1 mark)
Poor lighting. (1 mark)
Loose tools. (1 mark)
Chemical spillages. (1 mark)
Improper lifting. (1 mark)
14 a) Outline four ways to care for PPE. (4 marks)
Clean PPE. (1 mark)
Store properly. (1 mark)
Inspect before use. (1 mark)
Replace when worn out. (1 mark)
b) Differentiate four classifications of fires stating cause and extinguisher. (12 marks)
Class A: Solids (wood) - Water extinguisher. (3 marks)
Class B: Liquids (petrol) - Foam/CO2. (3 marks)
Class C: Gases (LPG) - CO2. (3 marks)
Class D: Metals (magnesium) - Dry powder. (3 marks)
3. a) Explain four methods of identifying faulty tools/equipment. (8 marks)
Visual inspection. (2 marks)
Functional testing. (2 marks)
Calibration check. (2 marks)
User reports. (2 marks)
b) Explain three types of maintenance. (6 marks)
Preventive. (2 marks)
Corrective. (2 marks)
Predictive. (2 marks)
c) State two advantages of each maintenance type. (6 marks)
Preventive: Reliable, reduces downtime. (2 marks)
Corrective: Simple, cost-effective. (2 marks)
Predictive: Efficient, reduces waste. (2 marks)
15a) Outline six qualities for effective fault-finding. (6 marks)
Observant. (1 mark)
Patient. (1 mark)
Analytical. (1 mark)
Knowledgeable. (1 mark)
Skilled in tools. (1 mark)
Communicator. (1 mark)
b) List seven importance of proper maintenance. (7 marks)
Prolongs lifespan. (1 mark)
Increases safety. (1 mark)
Reduces breakdowns. (1 mark)
Enhances reliability. (1 mark)
Saves costs. (1 mark)
Ensures compliance. (1 mark)
Maintains performance. (1 mark)
c) Outline the procedure for cleaning a work area. (3 marks)
Power off. (1 mark)
Remove debris. (1 mark)
Wipe tools/surfaces. (1 mark)
d) List four factors for repair or replacement. (4 marks)
Cost. (1 mark)
Age. (1 mark)
Frequency. (1 mark)
Spare parts availability. (1 mark)
