Free Waec/Neco Gce Answers

WAEC SOLAR PHOTOVOLTAIC INSTALLATION & MAINTENANCE NUMBER ONE (1a) (PICK ANY TWO) (i) Poor insulation of cables and wires. (ii) Overloading of electrical circuits. (iii) Careless handling of electrical equipment. (iv) Use of damaged tools and appliances. (v) Wet working environment. (1aii) (PICK ANY TWO) (i) Switch off the power supply before touching the victim. (ii) Give artificial respiration/CPR and call for medical help. (iii) Treat burns with clean dressing. (iv) Keep the victim warm and calm. (v) Take the victim to the hospital immediately. (1aiii) Electric shock is the injury or effect produced when electric current passes through the human body. (1b) (i) Cleats (ii) PVC insulated cables (iii) Screws (iv) Wooden plugs (1ci) It removes oxide and dirt from metal surfaces to allow proper flow of solder. (1cii) (PICK ANY THREE) (i) Resin flux (ii) Zinc chloride flux (iii) Ammonium chloride flux (iv) Tallow flux (v) Paste flux (vi) Petroleum jelly flux (1di) (i) Short circuit fault (ii) Open circuit fault (iii) Earth fault (1dii) Draw the diagram below

WAEC SOLAR PHOTOVOLTAIC INSTALLATION & MAINTENANCE NUMBER ONE (1a) (PICK ANY TWO) (i) Poor insulation of cables and wires. (ii) Overloading of electrical circuits. (iii) Careless handling of electrical equipment. (iv) Use of damaged tools and appliances. (v) Wet working environment. (1aii) (PICK ANY TWO) (i) Switch off the power supply before touching the victim. (ii) Give artificial respiration/CPR and call for medical help. (iii) Treat burns with clean dressing. (iv) Keep the victim warm and calm. (v) Take the victim to the hospital immediately. (1aiii) Electric shock is the injury or effect produced when electric current passes through the human body. (1b) (i) Cleats (ii) PVC insulated cables (iii) Screws (iv) Wooden plugs (1ci) It removes oxide and dirt from metal surfaces to allow proper flow of solder. (1cii) (PICK ANY THREE) (i) Resin flux (ii) Zinc chloride flux (iii) Ammonium chloride flux (iv) Tallow flux (v) Paste flux (vi) Petroleum jelly flux (1di) (i) Short circuit fault (ii) Open circuit fault (iii) Earth fault (1dii) Draw the diagram below

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SOLAR PHOTOVOLTAIC INSTALLATION & MAINTENANCE 👇

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(5ai) (i)Insufficient Storage Space (ii)Poor Internet Connectivity (5aii) (i)For Storage: Delete unused apps, clear cached data, or move media files (photos/videos) to cloud storage or an SD card. (ii)For Connectivity: Restart the router, switch between Wi-Fi and mobile data, or toggle Airplane Mode on and off to reset the network connection. (5bi) Business risk refers to the possibility of experiencing lower than expected profits or a loss. In phone repair, this includes potential accidental damage to a customer's device during repair, rapid technology changes making current spare parts obsolete, or legal liabilities arising from data privacy breaches. (5bii) (i)Technical Expertise: Having skilled technicians who can accurately diagnose and fix complex hardware and software issues. (ii)Quality of Spare Parts: Using genuine or high-quality replacement components to ensure customer satisfaction and reduce return rates.

WAEC COMPUTER HARDWARE NUMBER THREE (3ai) PICK ANY THREE(3) (I) Faulty touch IC (ii) Damaged touch connector (iii) Broken touch flex cable (iv) Faulty display screen (v) Damaged motherboard track/path (vi) Defective processor (CPU) (3aii) PICK ANY TWO (I)Faulty touch IC Replace or reball the touch IC using a hot air station. (ii) Damaged touch connector Resolder or replace the connector on the motherboard. (iii) Broken touch flex cable Replace the damaged flex cable with a new one. (iv)Faulty display screen Replace the complete screen assembly. (v) Damaged motherboard track/path Trace and bridge the broken path using jumper wire. (vi) Defective processor (CPU) Reball or replace the CPU professionally. (3b) (I) Internal antenna (ii) External antenna (3c) (I) Rear-mounted fingerprint sensor (ii) Side-mounted fingerprint sensor (iii) Under-display (in-display) fingerprint sensor

NUMBER 3 (3ai) (i)CPU (Application Processor) (ii)Display/Touch Connector (iii)Touch IC (3aii) (i)Touch IC: Re-soldering (reflowing) or replacing the IC chip. (ii)Connector: Cleaning the connector with IPA (Isopropyl Alcohol) or re-seating the ribbon cable properly. (3b) (i)Main Antenna: For cellular signals (LTE/5G). (ii)Wi-Fi/Bluetooth Antenna: For short-range wireless connectivity. (3c) (i)Rear-mounted: Located on the back of the device. (ii)Side-mounted: Integrated into the power button. (iii)In-display (Under-display): Located beneath the screen.

NUMBER 1 (1ai) (i)Theft Deterrent (ii)Data Security (1aii) (i)Go to the phone's Settings menu and select Security (or Lock Screen). (ii)Tap on Screen Lock and choose the Pattern option. (iii)Draw your desired pattern on the grid, tap Continue, redraw it to confirm, and tap Confirm. (1bi) collateral refers to an asset (such as property, equipment, or land) that a business owner pledges to a lender as security for a loan. If the owner fails to repay the loan used to start the repair business, the lender can seize the collateral to recover the debt. (1bii) (i)Strong Competition (ii)Inadequate Equipment (iii)Strong Competition

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