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Which of the following statements correctly explains the relation between the maximum demand and the connected load during a practical scenario in a power system?
The maximum demand will always be greater than the connected load.
The maximum demand will always be less than the connected load.
The maximum demand and the connected load do not exhibit any relation with each other.
The maximum demand will always be equal to the connected load.
The maximum demand will always be less than the connected load.
Maximum demand is the highest load that occurs during a specified time interval, while connected load is the sum of the continuous ratings of all equipment connected to the system. Since not all connected appliances are operated simultaneously at their full rated capacity, the maximum demand is always less than or equal to the total connected load.
Maximum demand is the highest load that occurs during a specified time interval, while connected load is the sum of the continuous ratings of all equipment connected to the system. Since not all connected appliances are operated simultaneously at their full rated capacity, the maximum demand is always less than or equal to the total connected load.
Demand┬аFactor=Connected┬аLoadMaximum┬аDemandтАЛ
Demand┬аFactorтЙд1
In any electrical system, diversity exists among loads. Different consumers use appliances at different times, and even within a single installation, not all loads run at their peak simultaneously. Consequently, the actual peak demand drawn from the source is significantly lower than the theoretical sum of all ratings.
Connected load is the algebraic sum of ratings of all load devices.
Maximum demand is the peak value of the load curve over a specific period.
The ratio of maximum demand to connected load is termed as the Demand Factor.
Due to diversity, the demand factor is generally less than 1.
Economic sizing of generation and transmission equipment.
Optimal utilization of utility infrastructure.
Requires complex diversity calculations for system planning.
Underestimating demand can lead to frequent circuit breaker tripping.
Load forecasting in distribution systems.
Tariff determination by utility companies.
A demand factor of 1 implies that all connected loads are running at full capacity at the same time, which is practically impossible in large power systems.
Option A is incorrect because the system capacity is planned based on maximum demand, not exceeding the total connected capability.
Option D is rarely true and only occurs in hypothetical, fully synchronized industrial loads.
B is correct тАФ The maximum demand will always be less than the connected load because all electrical equipment is never energized at the same time at their maximum rated capacity.
Remember that while maximum demand is less than the connected load, the Diversity Factor (the sum of individual maximum demands divided by the actual group peak demand) is always greater than 1.
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