Energy Conversion Devices - JSS2 Basic technology Past Questions and Answers - page 1
1
What is the primary function of generators in energy conversion?
View related lesson
A
Convert electrical energy into mechanical energy
B
Convert thermal energy into electrical energy
C
Convert mechanical energy into heat energy
D
Convert light energy into chemical energy
2
How do motors primarily operate in energy conversion?
View related lesson
A
By converting mechanical energy into electrical energy
B
By converting electrical energy into thermal energy
C
By converting electrical energy into mechanical energy
D
By converting thermal energy into mechanical energy
3
Which principle do generators primarily rely on?
View related lesson
A
Thermodynamics
B
Electromagnetic induction
C
Newton's law of motion
D
Bernoulli's principle
4
What is the main function of motors in industrial applications?
View related lesson
A
To generate electrical energy
B
To convert thermal energy
C
To produce light energy
D
To provide mechanical motion
5
Which energy conversion device converts wind energy into electrical energy?
View related lesson
A
Motor
B
Heat engine
C
Generator
D
Battery
6
How do heat engines primarily convert energy?
View related lesson
A
By converting thermal energy into mechanical work
B
By converting electrical energy into mechanical energy
C
By converting mechanical energy into heat energy
D
By converting light energy into chemical energy
7
What principle do generators use to convert mechanical energy into electrical energy?
View related lesson
A
Electromagnetic induction
B
Thermodynamics
C
Newton's laws of motion
D
Archimedes' principle
8
Which device converts electrical energy into mechanical energy in household appliances?
View related lesson
A
Heat engine
B
Generator
C
Motor
D
Transformer
9
What is the primary function of a heat engine in a vehicle?
View related lesson
A
To convert mechanical energy into electrical energy
B
To convert wind energy into electrical energy
C
To convert thermal energy into mechanical work
D
To convert light energy into chemical energy
10
Which example demonstrates a practical application of a generator?
View related lesson
A
Charging a battery with solar panels
B
Heating water with a gas burner
C
Generating electricity from a hydroelectric dam
D
Cooling a room with an air conditioner
Loading lesson…