JSS3 Junior Waec Basic Technology Past Questions And Answers (Objective and Theory)
Section A: Objective Questions
Basic Technology Junior Waec Questions for JSS3:
Question: What is the function of a resistor in an electrical circuit?
A) Store electrical energy
B) Amplify signals
C) Control the flow of current
D) Generate magnetic fields
Answer: C) Control the flow of current
Question: Which tool is commonly used for measuring the length of objects in woodworking?
A) Screwdriver
B) Tape measure
C) Hammer
D) Pliers
Answer: B) Tape measure
Question: What is the purpose of a fuse in an electrical circuit?
A) Increase voltage
B) Interrupt the circuit in case of excess current
C) Regulate resistance
D) Boost signal strength
Answer: B) Interrupt the circuit in case of excess current
Question: In metalworking, what is the process of heating and cooling metal to improve its hardness called?
A) Welding
B) Casting
C) Annealing
D) Forging
Answer: C) Annealing
Question: What does the term “CAD” stand for in the context of design and drafting?
A) Computer-Aided Design
B) Centralized Architecture Database
C) Circuit Analysis Diagram
D) Chemical Analysis and Design
Answer: A) Computer-Aided Design
Question: Which of the following is a renewable source of energy?
A) Coal
B) Natural gas
C) Solar power
D) Nuclear power
Answer: C) Solar power
Question: What is the primary purpose of a spanner in mechanical work?
A) Measure temperature
B) Tighten or loosen nuts and bolts
C) Cut materials
D) Measure distance
Answer: B) Tighten or loosen nuts and bolts
Question: In woodworking, what is the function of a chisel?
A) Measure angles
B) Shape and carve wood
C) Fasten materials
D) Measure volume
Answer: B) Shape and carve wood
Question: Which material is commonly used as a conductor in electrical wiring?
A) Wood
B) Rubber
C) Copper
D) Plastic
Answer: C) Copper
Question: What is the purpose of a soldering iron in electronics?
A) Cut wires
B) Measure voltage
C) Join or repair electrical connections
D) Polish surfaces
Answer: C) Join or repair electrical connections
Question: In construction, what is the function of a level tool?
A) Measure weight
B) Check if a surface is horizontal or vertical
C) Calculate area
D) Determine temperature
Answer: B) Check if a surface is horizontal or vertical
Question: What is the role of a bearing in a machine?
A) Generate electricity
B) Reduce friction between moving parts
C) Store energy
D) Measure pressure
Answer: B) Reduce friction between moving parts
Question: Which of the following is an example of a non-renewable energy source?
A) Wind power
B) Solar power
C) Coal
D) Geothermal power
Answer: C) Coal
Question: What is the purpose of a circuit breaker in an electrical system?
A) Control the flow of current
B) Store electrical energy
C) Increase resistance
D) Interrupt the circuit in case of excess current
Answer: D) Interrupt the circuit in case of excess current
Question: In metalworking, what is the process of shaping a heated metal by hammering called?
A) Annealing
B) Casting
C) Forging
D) Welding
Answer: C) Forging
Section B: Theory Questions
Question: Explain the importance of safety precautions in a workshop environment, highlighting specific measures that should be taken to ensure the well-being of individuals working with tools and machinery.
Answer: Safety precautions in a workshop are crucial to prevent accidents and ensure the well-being of individuals. Measures include wearing appropriate protective gear, such as safety goggles and gloves, using tools properly, keeping the workspace organized, and following proper procedures for handling machinery. Training on emergency protocols and the importance of situational awareness contributes to a safer workshop environment.
Question: Discuss the principles of sustainability in technology and engineering. How can sustainable practices be incorporated into the design and use of products and systems?
Answer: Sustainability in technology involves designing and using products and systems in a way that minimizes negative environmental and social impacts. This includes considering the life cycle of products, using eco-friendly materials, and implementing energy-efficient technologies. Incorporating sustainable practices requires adherence to ethical standards, recycling, and promoting renewable energy sources to create a positive and lasting impact on the environment.
Question: Explore the concept of automation in technology. Discuss its advantages, challenges, and potential impact on employment and society.
Answer: Automation in technology involves using machines and systems to perform tasks without direct human intervention. Advantages include increased efficiency, precision, and productivity. However, challenges include potential job displacement and the need for workers to adapt to new skills. The impact on employment and society depends on how automation is implemented, emphasizing the importance of responsible and ethical technological advancements.
