ELECTRICAL TECHNOLOGY

Year	No.	Offer	Mode	Description			Cred. Pts
96	70230 	S2  	D 	ELECTRICAL TECHNOLOGY     	1.00

Contents

• Staffing
• Pre-requisite(s)
• Synopsis
• Objectives
• Topics
• Texts
• Recommended References
• Student Workload
• Assessment Details
• Other Requirements

STAFFING:

PRE-REQUISITE(S)

75612

SYNOPSIS:

Engineering  professionals  need  a working  knowledge  of  electrical
components,  machines and safety devices commonly encountered  in  the
engineering  workplace.   To  provide that  knowledge,  in  Electrical
Technology,  we  study  the  principles of materials,  components  and
machines  for  electrical energy conversion.  Analysis of  dc  and  ac
circuits  and  test measurements on resistors, capacitors,  inductors,
transformers, motors, generators, batteries and rectifiers  form  part
of the practical work.

OBJECTIVES:

A student who has mastered this unit should be able to :

1. state the electric, magnetic, thermal and chemical effects in common electrical devices and make simple calculations using the basic laws and conventions for energy conversion;
2. describe common electrical components, devices and signal sources and their principles of operation in simple dc and ac circuits;
3. use electrical instruments and cathode ray oscilloscope for the measurement of voltage, current, resistance, energy, power and power factor;
4. state and apply Laws and Theorems to analyse dc and ac circuits, eg ammeter shunts, voltmeter multipliers, voltage dividers, bridges, battery connections, cable voltage drop and generators in parallel;
5. construct phasor diagrams and use phasors to analyse single phase and three phase circuit measurements relating to lamps, capacitors, transformers, motors and generators;
6. conduct tests to determine the no load and on load operation of transformers, motors and generators;
7. state the applications of transformers, auto transformers and instrument transformers;
8. explain the principles of operation and the applications of dc and ac motors and generators;
9. draw and explain the circuit diagrams for transformer, dc motor, ac generator and induction motor;
10. state the principle of rectifiers, inverters and battery chargers and their applications;
11. explain the need for earthing, safety fuses, circuit breakers, earth leakage circuit breakers and lightning protection;
12. describe with line diagrams, typical electricity supply systems.

TOPICS:

 Description                                                    Weighting(%)

Energy Terminology - Mechanics - Heating                              3.00

Electrostatics - Capacitors - Insulation - Lightning                  3.00

Electric Conductors - Resistors - Batteries                           3.00

Direct Current Circuits - Laws - Theorems - Applications              12.00

Electromagnetics - Inductors - EMF - Cores                            4.00

Direct Current Machines - Motors - Performance Tests                  10.00

Alternating Currents - Phasors - Power Components                     10.00

AC Circuits - Resonance - Rectifiers - Lamps                          10.00

DC and AC Measurements                                                4.00

Transformers - Tests - Analysis - Applications                        10.00

Three phase systems - Phasors - Connections - Power                   10.00

AC Motors - Generators - Principles - Tests                           16.00

Supply Systems - Earthing - Safety Devices                            5.00

TEXT and MATERIALS to be PURCHASED:

RECOMMENDED REFERENCE MATERIALS:

McKenzie Smith I, Hughes Electrical Technology, 6th Edition, Longman,
England, 1987.

STUDENT WORKLOAD REQUIREMENTS:

	ACTIVITY				HOURS
Lectures                                      	26
Tutorials/Workshops                           	13
Laboratory or Practical Classes               	26
Field Trips                                   	4
Report Writing                                	15
Directed Study                                	35
Private Study                                 	49
Examinations                                  	3
Assessments                                   	4

ASSESSMENT DETAILS:

No	*F/S	Marks		Due		Description					Wtg(%)		LBL
1 	S 	        	PASSIM  	4 CLOSED BOOK TESTS (1 HOUR EACH)       	30.00   	N
2 	S 	        	PASSIM  	PRACTICAL REPORTS                       	20.00   	N
3 	S 	        	END S2  	3 HOUR CLOSED BOOK FINAL EXAMINATION    	50.00   	N

OTHER REQUIREMENTS:

1    Student  must achieve at least 40% of maximum possible  marks  in
     each  assessment and at least 50% of total maximum possible marks
     to successfully complete the unit.
2    Attendance in practical classes is compulsory.
3    Because  it is normal practice to release model answers  promptly
     after the due date, the penalty for late submission of assignment
     work will normally be the loss of all marks for the assignment.
4    It  is the policy of the Faculty of Engineering and Surveying NOT
     to  accept  submission  of assignments  by  facsimile  or  email.
     Students  in remote locations who do not have regular  access  to
     postal services may be given special consideration.