AQA Electronic Products Exam Format

AQA :WRITTEN EXAM PAPER 2011 TIME: 1.5 HOURS USE BLACK INK USE PENCIL FOR DRAWING

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

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 OBJECTIVES: EXPLAIN WHAT A SYSTEM IS LIST PARTS OF A SYSTEM DIAGRAM EXPLAIN HOW IT IS USED INPUT – PROCESS - OUTPUT

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