aqa electronic products exam format. aqa :written exam paper 2011 time: 1.5 hours use black ink use...
TRANSCRIPT
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AQA Electronic Products
Exam Format
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AQA :WRITTEN EXAM PAPER 2011
TIME: 1.5 HOURS
USE BLACK INK
USE PENCIL FOR DRAWING
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tips
• 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
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FORMULA’S – given on paper
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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
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EXAMPLE QUESTIONS ON COMPONENTS
OBJECTIVES: RECOGNISE THE SYMBOLS FOR ELECTRICAL COMPONENTS USED IN CIRCUIT DIAGRAMS
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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
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EXAMPLES QUESTIONS ON TRANSISTORS:
OBJECTIVES:
EXPLAIN THE OPERATION OF TRANSISTORS
COMMON USES & FUNCTIONS: DARLINGTON PAIRS
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EXAMPLE QUESTION ON PCB MANUFACTURING
OBJECTIVES:
EXPLAIN THE ADVANTAGES/DISADVANTAGES OF USING COMPUTER SOFTWARE
IDENTIFY KEY TERMINOLOGY
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EXAMPLE DESIGN QUESTIONS: DESCRIBE HOW AN ENCLOSURE CAN BE BUILT – HOW TO SECURE COMPONENTS
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EXAMPLE QUESTIONS: SYSTEMS APPROACH
OBJECTIVES:
EXPLAIN WHAT A SYSTEM IS
LIST PARTS OF A SYSTEM DIAGRAM
EXPLAIN HOW IT IS USED
INPUT – PROCESS - OUTPUT
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EXAMPLE QUESTIONS ON ASTABLE CIRCUITS:EXPLAIN THE FUNCTION – CALCULATE THE MARK/SPACE RATIO – DESRCIBE THE CONFIGURATION
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EXAMPLE QUESTIONS ON MONOSTABLE: EXPLAIN THE FUNCTION – CALCULATE THE TIME CONSTANT – EXPLAIN WHY A PULL UP RESISTOR IS USEDE:
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EXAMPLE DESIGN CONSIDERATIONS QUESTIONS: EXPLAIN RESPONSIBLE DESIGNS – MAINTENACE – RECYCLING – ENVIRONMENTAL ISSUES
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