16 Questions
What is the defining feature of a water tariff system?
A system where different portions of water used are charged at different rates
What does the graphical representation of a tariff system show?
A step-function graph with incremental increases
What is the purpose of comparing the graphs of different tariff systems?
To find the break-even point
What is the formula for calculating the monthly cost in a prepaid system?
Monthly Cost = Rate per Unit x Units Used
What does the increasing gradient of a graph represent in a tariff system?
A higher rate for higher usage levels
What is the term for the point at which the costs of two tariff systems are equal?
Break-even point
What does a flat line section of a graph represent in a tariff system?
A period where the cost remains the same
What is the formula for calculating the monthly cost in a non-prepaid system?
Monthly Cost = Service Charge + Network Charge + (Rate per Unit x Units Used)
Which type of tariff system is commonly used for electricity and water consumption?
Incremental tariff system
What is the primary purpose of drawing graphs to represent different tariff systems?
To compare the costs of different tariff systems under various usage levels
What does the intersection point of two tariff system graphs represent?
The point at which the costs of both systems are equal
What is the primary advantage of an incremental tariff system?
It discourages consumers from wasting resources
What is the relationship between the units used and the monthly cost in a prepaid system?
The monthly cost increases linearly with the units used
What is the significance of the service charge and network charge in a non-prepaid system?
They are fixed costs that are added to the total cost
What is the primary difference between a prepaid and non-prepaid system?
The non-prepaid system has additional fixed costs, such as service and network charges
What is the purpose of calculating the break-even point of two tariff systems?
To determine which system is more cost-effective at a specific usage level
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