Electric circuits
Explain the meaning of electric circuit.
Identify types of circuit boards.
Explain different circuit arrangements
Calculate resistance in:
i. Series
ii. Parallel, and
iii. Series-parallel.
Circuit components
State the different types of resistors, capacitors and inductors.
State the symbols, signs and units of the components mentioned in (1) above.
Identify different colour coding and rating of resistors and capacitors.
Electric Power
Define electrical power.
State the unit and instrument for measuring electrical power.
Explain the relationship between power, current and voltage.
Derive other formulae for power in a given circuit.
Calculate power in a given circuit.
Relationships between current, voltage and resistant
Explain the following quantities: voltage, current and resistance.
State the units, symbols and instruments for measuring the quantities mentioned in (1) above.
State Ohm’s Law.
Perform a simple experiment to determine Ohm’s Law.
Calculate current, voltage and resistance in a given circuit.
Electric current
Explain the structure of atom.
Define conductors and insulators
State uses of conductors and insulators.
Distinguish between direct and alternating current.
Explain the sources of direct and alternating current.
Electrical Appliances
Define electrical appliances
Classify electrical appliances.
Maintain and repair electrical appliances.
Energy Conversion
Explain the meaning of energy conversion.
The relationship between electrical, mechanical and thermal energy.
Explain the process of energy conversion.
Energy
Define energy and state its unit.
Explain various types of energy.
Protective Devices
Explain the need for protective devices in electrical installation,
Identify types of protective devices.
Explain the operating principles of protective devices.
State the functions of protective device e.g. fuse, circuit breakers, and contactors
Earthing
State the meaning of earthing.
Describe the process of earthing.
Installation Faults
Locate faults in a completed installation.
Repair common faults in a completed installation.
Installation Tests
State the types of test that are carried out in a completed installation [i.e. new lnstallation]
Carry out tests on a completed installation.
Transformer efficiency, cooling, ,losses and applications
Explains and calculate efficiency of transformers.
State methods of cooling a transformer.
List transformer losses.
State application of a transformer.
Basic features and Operation of transformers
Identify the basic constructional features of a transformer.
Classify transformers by phase and by core.
Explain the working principles of a transformer including transformation ratio.
Maintenance and Repair of various Electrical Appliances
Carry out basic maintenance of electrical appliances.
Identify and replace of damaged parts, etc.
Power Sockets Outlets
Wire ring mains for domestic premises.
Identify ring and radial circuit.
Trunking and Ducting
Differentiate between trunking and ducting.
Conduit Runs and Fitting
Identify conduit materials and fittings.
Install circuit using conduit system,
Wiring Regulations
State some regulations guiding wiring methods (i.e. LE.E. regulations)
Observe l.E.E. regulations governing electrical wiring.
Types of Wiring Methods
Describe the various types of wiring methods.
Identify the lighting points and the switches that control it.