JSS3 Second Term Basic Technology Past Questions And Answers
JSS3 second term, along with options and answers:
Question: What is the purpose of a capacitor in an electronic circuit?
A) To control current
B) To store and release electrical energy
C) To measure resistance
D) To amplify signals
Answer: B) To store and release electrical energy
Question: Which tool is commonly used for measuring the thickness of materials?
A) Vernier caliper
B) Compass
C) Micrometer screw gauge
D) Protractor
Answer: C) Micrometer screw gauge
Question: In mechanics, what does the term “torque” refer to?
A) Force applied to change motion
B) Circular motion
C) Twisting or turning force
D) Acceleration
Answer: C) Twisting or turning force
Question: What is the primary purpose of an air compressor?
A) Generating electricity
B) Pumping air into tires
C) Cutting metal
D) Measuring air pressure
Answer: B) Pumping air into tires
Question: Which of the following is a type of simple machine?
A) Transistor
B) Lever
C) Resistor
D) Capacitor
Answer: B) Lever
Question: What is the function of an alternator in a vehicle?
A) Charging the battery
B) Providing air conditioning
C) Controlling fuel injection
D) Igniting the spark plugs
Answer: A) Charging the battery
Question: In electronics, what does the term “LED” stand for?
A) Light Emitting Diode
B) Long-lasting Electrical Device
C) Low Energy Device
D) Linear Electronic Display
Answer: A) Light Emitting Diode
Question: Which of the following is a renewable source of energy commonly used for heating?
A) Natural Gas
B) Biomass
C) Coal
D) Petroleum
Answer: B) Biomass
Question: What is the purpose of a rheostat in an electrical circuit?
A) Controlling current by varying resistance
B) Amplifying signals
C) Storing energy
D) Converting AC to DC
Answer: A) Controlling current by varying resistance
Question: What is the role of a diode in an electrical circuit?
A) Amplifying signals
B) Allowing current flow in one direction
C) Controlling resistance
D) Storing electrical energy
Answer: B) Allowing current flow in one direction
Question: In carpentry, what is the purpose of a coping saw?
A) Measuring angles
B) Cutting straight lines
C) Cutting curves and intricate shapes
D) Sanding surfaces
Answer: C) Cutting curves and intricate shapes
Question: What is the function of a thermostat in a heating system?
A) Measuring temperature
B) Generating heat
C) Controlling humidity
D) Transmitting signals
Answer: A) Measuring temperature
Question: In metalworking, what is the process of heating and cooling to alter the properties of a material?
A) Casting
B) Forging
C) Annealing
D) Welding
Answer: C) Annealing
Question: Which of the following is a type of non-renewable energy resource?
A) Wind power
B) Geothermal energy
C) Nuclear power
D) Biomass
Answer: C) Nuclear power
Question: What is the primary function of a belt sander in woodworking?
A) Cutting
B) Shaping curves
C) Smoothing surfaces
D) Measuring angles
Answer: C) Smoothing surfaces
Question: In a hydraulic system, what is the purpose of hydraulic fluid?
A) Producing heat
B) Transmitting electrical signals
C) Transmitting force
D) Controlling temperature
Answer: C) Transmitting force
Question: Which of the following is a common safety feature in power tools?
A) Removing safety guards
B) Wearing loose clothing
C) Using tools with damaged cords
D) Wearing safety goggles
Answer: D) Wearing safety goggles
Question: What is the purpose of a voltmeter in an electrical circuit?
A) Measuring voltage
B) Controlling resistance
C) Storing energy
D) Amplifying signals
Answer: A) Measuring voltage
Question: In computer programming, what is a variable?
A) A fixed value
B) A container for storing data
C) A constant value
D) A programming language
Answer: B) A container for storing data
Question: Which of the following is a characteristic of a wedge?
A) It changes the direction of force
B) It amplifies signals
C) It has a sharp edge for splitting
D) It measures angles
Answer: C) It has a sharp edge for splitting.
