Introduction to Power Systems - JSS2 Basic technology Past Questions and Answers - page 1
1
What is the primary function of power systems?
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A
Transmitting water
B
Generating mechanical energy
C
Producing and distributing electrical energy
D
Transporting gas
2
Which component of power systems converts mechanical energy into electrical energy?
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A
Transformers
B
Transmission lines
C
Generators
D
Distribution systems
3
What is the purpose of transformers in power systems?
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A
Generating electricity
B
Distributing electricity to homes
C
Stepping up or down voltage levels
D
Transmitting electricity over long distances
4
How do transmission lines contribute to power systems?
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A
They generate electricity
B
They distribute electricity to homes
C
They convert energy into electricity
D
They transport electricity over long distances
5
Why are high-voltage transmission lines preferred for long-distance electricity transport?
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A
To reduce energy consumption
B
To increase energy production
C
To minimise energy losses
D
To speed up energy distribution
6
Which system delivers electricity to homes and businesses at lower voltages?
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A
Transmission lines
B
Generators
C
Transformers
D
Distribution systems
7
What is demonstrated during practical examples of power systems?
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A
Cooking techniques
B
Software development
C
Operation of generators and transformers
D
Automotive mechanics
8
How do power systems support economic growth and daily activities?
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A
By reducing energy demand
B
By increasing water supply
C
By providing reliable electricity supply
D
By improving transportation systems
9
What role do substations play in power systems?
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A
Generating electricity
B
Distributing electricity to homes
C
Transforming voltage levels
D
Transporting electricity over long distances
10
Which energy sources can generators convert into electricity?
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A
Water only
B
Fossil fuels, renewables and nuclear
C
Solar energy only
D
Wind energy only
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