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AQA Electronic Products
Exam Format
AQA
:WRITTEN
EXAM PAPER
2011
TIME: 1.5
HOURS
USE BLACK
INK
USE PENCIL
FOR
DRAWING
tips
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Have a calculator and pencil for exam
Always read each question right through before answering.
Try to avoid one word answers.
Use a pencil for all drawings
Never give two answers when one is required.
Look at the number of marks and the space allocated for
each question
Use all the space provided. If the space is provided it is
likely a good answer will fill the space.
Do not rush questions – think carefully before writing
answers
Make sure all sketches are labelled
Attempt all questions, you may pick up marks
FORMULA’S – given on paper
UNIT 1: WRITTEN PAPER
• MATERIALS AND COMPONENTS –
• SYSTEM DIAGRAMS - CIRCUIT SYMBOLS –
BATTERIES & DIODES – RESISTORS –
CAPACITORS
• INPUTS – PROCESSES - OUTPUTS
• THYRISTORS – OP AMPS – LOGIC GATES –
TIMERS(MONOSTABLE & ASTABLE) FLOWCHARTS – LEDS – TRANSISTORS
• DESIGN & MANUFACTURE
• CASING – MAKING PCB’S – DESIGN
CONSIDERATIONS
EXAMPLE
QUESTIONS
ON COMPONENTS
OBJECTIVES:
RECOGNISE THE
SYMBOLS FOR
ELECTRICAL
COMPONENTS
USED IN CIRCUIT
DIAGRAMS
EXAMPLE
QUESTIONS ON
RESISTORS & LED’S.
OBJECTIVE:
EXPLAIN HOW
RESISTORS ARE USED &
DETERMINE THE VALUE
OF FIXED &
COMBINATION
RESISTORS
EXPLAIN HOW AN LED IS
USED & POSTIONED WITH
THE CORRECT POLARITY
EXAMPLES
QUESTIONS ON
TRANSISTORS:
OBJECTIVES:
EXPLAIN THE
OPERATION OF
TRANSISTORS
COMMON USES &
FUNCTIONS:
DARLINGTON
PAIRS
EXAMPLE QUESTION
ON PCB
MANUFACTURING
OBJECTIVES:
EXPLAIN THE
ADVANTAGES/
DISADVANTAGES OF
USING COMPUTER
SOFTWARE
IDENTIFY KEY
TERMINOLOGY
EXAMPLE DESIGN QUESTIONS: DESCRIBE HOW AN ENCLOSURE
CAN BE BUILT – HOW TO SECURE COMPONENTS
EXAMPLE
QUESTIONS:
SYSTEMS APPROACH
INPUT – PROCESS - OUTPUT
OBJECTIVES:
EXPLAIN WHAT A
SYSTEM IS
LIST PARTS OF A
SYSTEM DIAGRAM
EXPLAIN HOW IT IS
USED
EXAMPLE QUESTIONS ON ASTABLE CIRCUITS:
EXPLAIN THE FUNCTION – CALCULATE THE MARK/SPACE RATIO
– DESRCIBE THE CONFIGURATION
EXAMPLE QUESTIONS ON MONOSTABLE: EXPLAIN THE
FUNCTION – CALCULATE THE TIME CONSTANT – EXPLAIN WHY
A PULL UP RESISTOR IS USEDE:
EXAMPLE DESIGN CONSIDERATIONS QUESTIONS:
EXPLAIN RESPONSIBLE DESIGNS – MAINTENACE –
RECYCLING – ENVIRONMENTAL ISSUES