JSS3 Third Term Basic Technology Past Questions And Answers

 

20 Basic Technology questions for JSS3 third term, along with options and answers:

 

Question: What is the primary function of a multimeter in electronics?

 

A) Measuring temperature

B) Testing continuity

C) Cutting wires

D) Amplifying signals

Answer: B) Testing continuity

 

Question: In mechanics, what is the term for the force that opposes motion between two surfaces in contact?

 

A) Friction

B) Gravity

C) Tension

D) Inertia

Answer: A) Friction

 

Question: What is the purpose of a CNC machine in manufacturing?

 

A) Cutting metal manually

B) Controlling industrial processes automatically

C) Measuring precision angles

D) Generating electricity

Answer: B) Controlling industrial processes automatically

 

Question: Which type of energy is stored in an object due to its position above the Earth’s surface?

 

A) Kinetic energy

B) Thermal energy

C) Gravitational potential energy

D) Electrical energy

Answer: C) Gravitational potential energy

 

Question: What is the primary function of a 3D printer in modern manufacturing?

 

A) Cutting metal

B) Shaping wood

C) Creating three-dimensional objects layer by layer

D) Measuring electrical resistance

Answer: C) Creating three-dimensional objects layer by layer

 

Question: In computer hardware, what is the purpose of a graphics card?

 

A) Storing data

B) Displaying images on a monitor

C) Controlling network connections

D) Processing keyboard input

Answer: B) Displaying images on a monitor

 

Question: Which of the following is an example of a renewable energy source for electricity generation?

 

A) Coal

B) Natural Gas

C) Hydroelectric power

D) Petroleum

Answer: C) Hydroelectric power

 

Question: What is the function of a serger in sewing machines?

 

A) Cutting fabric

B) Sewing straight stitches

C) Creating decorative stitches

D) Finishing edges and preventing fraying

Answer: D) Finishing edges and preventing fraying

 

Question: In carpentry, what is the purpose of a coping foot for a jigsaw?

 

A) Measuring angles

B) Cutting straight lines

C) Creating intricate shapes

D) Sanding surfaces

Answer: C) Creating intricate shapes

 

Question: Which type of gear system changes the direction of rotation?

 

A) Spur gears

B) Bevel gears

C) Worm gears

D) Helical gears

Answer: B) Bevel gears

 

Question: What is the primary purpose of a heat sink in electronic devices?

 

A) Generating heat

B) Cooling the device by dissipating heat

C) Amplifying electrical signals

D) Controlling resistance

Answer: B) Cooling the device by dissipating heat

 

Question: In metalworking, what is the purpose of tempering?

 

A) Softening metal

B) Hardening metal

C) Shaping metal

D) Joining metal pieces together

Answer: B) Hardening metal

 

Question: Which of the following is a renewable energy source for heating?

 

A) Natural Gas

B) Geothermal energy

C) Coal

D) Propane

Answer: B) Geothermal energy

 

Question: What is the purpose of an oscilloscope in electronics?

 

A) Measuring temperature

B) Displaying electrical waveforms

C) Testing hardness of materials

D) Filtering signals

Answer: B) Displaying electrical waveforms

 

Question: In plumbing, what is the function of a check valve?

 

A) Controlling water pressure

B) Preventing backflow of water

C) Measuring water temperature

D) Filtering impurities in water

Answer: B) Preventing backflow of water

 

Question: Which of the following is a safety precaution when using power tools?

 

A) Removing safety guards

B) Operating tools with wet hands

C) Wearing loose clothing

D) Using tools with damaged cords

Answer: D) Using tools with damaged cords

 

Question: What is the purpose of a flywheel in a mechanical system?

 

A) Generating electricity

B) Controlling speed fluctuations

C) Cutting materials

D) Measuring distance

Answer: B) Controlling speed fluctuations

 

Question: In electronics, what does the term “breadboard” refer to?

 

A) A type of bread

B) A testing platform for building electronic circuits

C) A type of wire

D) A component in power supply systems

Answer: B) A testing platform for building electronic circuits

 

Question: What is the function of a ball bearing in machinery?

 

A) Controlling electricity flow

B) Reducing friction between moving parts

C) Generating heat

D) Transmitting signals

Answer: B) Reducing friction between moving parts

 

Question: In computer programming, what is a loop?

 

A) A piece of wire

B) A sequence of instructions that repeats

C) A type of keyboard

D) A device for measuring angles

Answer: B) A sequence of instructions that repeats.