SASS Prelim 2024

Index Class Number Candidate Name ___________________________________ ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ST ANDREW’S SCHOOL ELECTRONICS PAPER 1 6063/01 THURSDAY 15 AUGUST 2024 2 hours INSTRUCTIONS TO CANDIDATES Do not open this question paper until you are told to do so. READ THESE INSTRUCTIONS FIRST Write in dark blue or black pen. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all questions from Section A and Section B. Write your answers to Sections A and B in the spaces provided on the question paper. You may use a soft pencil for any diagrams, graphs or rough working. Candidates are reminded that all quantitative answers should include appropriate units. Candidates are advised to show all their working in a clear and orderly manner, as more marks are awarded for sound use of physics than for correct answers. At the end of the examination, fasten any separate answer paper securely to the Question paper. This question paper consists of 23 printed pages. [Turn over ELECTRONICS7015YHG © SAS 2024 ST ANDREW’S SECONDARY SCHOOL PRELIMINARY EXAMINATION 2024 SECONDARY 4 EXPRESS 100 FOR EXAMINER'S USE

DATASHEET Resistor Colour Codes 1st Colour Band 1st Digit 2nd Colour Band 2nd Digit 3rd Colour Band Multiplier 4th Colour Band Tolerance Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Grey 8 White 9 Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Grey 8 White 9 Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Silver 0.01 Gold 0.1 Gold ± 5% Silver ± 2% Preferred values for resistors (E24 SERIES) 1.01.11.21.31.51.61.82.02.22.42.7 3.0 3.3 3.63.94.34.75.15.66.26.87.5 8.2 9.1 and multiples of ten. FORMULAE Astable and monostable generators using 555 timers Monostable mode Period T = 1.1RC Astable mode Period T = (R1+2R2)C 1.44 ton = 0.7(R1 + R2) C toff = 0.7 R2 C Bipolar junction transistor (BJT) Current gain, β = Collector current Base current Voltage gain (for voltage-divider biased CE amplifier, emitter resistor unbypassed) ≅ −RC