Energy Conversion Devices - JSS2 Basic technology Past Questions and Answers - page 1
What is the primary function of generators in energy conversion?
Convert electrical energy into mechanical energy
Convert thermal energy into electrical energy
Convert mechanical energy into heat energy
Convert light energy into chemical energy
How do motors primarily operate in energy conversion?
By converting mechanical energy into electrical energy
By converting electrical energy into thermal energy
By converting electrical energy into mechanical energy
By converting thermal energy into mechanical energy
Which principle do generators primarily rely on?
Thermodynamics
Electromagnetic induction
Newton's law of motion
Bernoulli's principle
What is the main function of motors in industrial applications?
To generate electrical energy
To convert thermal energy
To produce light energy
To provide mechanical motion
Which energy conversion device converts wind energy into electrical energy?
Motor
Heat engine
Generator
Battery
How do heat engines primarily convert energy?
By converting thermal energy into mechanical work
By converting electrical energy into mechanical energy
By converting mechanical energy into heat energy
By converting light energy into chemical energy
What principle do generators use to convert mechanical energy into electrical energy?
Electromagnetic induction
Thermodynamics
Newton's laws of motion
Archimedes' principle
Which device converts electrical energy into mechanical energy in household appliances?
Heat engine
Generator
Motor
Transformer
What is the primary function of a heat engine in a vehicle?
To convert mechanical energy into electrical energy
To convert wind energy into electrical energy
To convert thermal energy into mechanical work
To convert light energy into chemical energy
Which example demonstrates a practical application of a generator?
Charging a battery with solar panels
Heating water with a gas burner
Generating electricity from a hydroelectric dam
Cooling a room with an air conditioner