Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
What does the area under the Load Duration Curve represent?
The total electricity consumption of consumers during the day
The load factor of the power station
The total power generated by a power plant during the day
The total number of units generated for the period considered
The total number of units generated for the period considered
The Load Duration Curve (LDC) represents the variation of load on a power station, with load values arranged in descending order of magnitude. The area under this curve corresponds to the integral of power over time, which represents the total electrical energy produced (in kWh) during the specific period.
The Load Duration Curve (LDC) represents the variation of load on a power station, with load values arranged in descending order of magnitude. The area under this curve corresponds to the integral of power over time, which represents the total electrical energy produced (in kWh) during the specific period.
Total┬аEnergy┬а(kWh)=тИл0TтАЛP(t)dt тАФ represents the area under the curve where P(t) is load at time t.
Load┬аFactor=Maximum┬аLoadAverage┬аLoadтАЛ=Maximum┬аDemand├ЧTTotal┬аkWh┬аgeneratedтАЛ тАФ links the area to performance metrics.
A Load Duration Curve is derived by rearranging the chronological Load Curve data. Since P=dtdWтАЛ where P is power and W is energy, the area represents тИлPтЛЕdt=W. Therefore, multiplying the ordinate (load in kW) by the abscissa (time in hours) yields the energy in kWh.
The LDC is always a downward-sloping curve.
The maximum value on the LDC is the peak load of the station.
The total energy generated corresponds to the area under the LDC for any given duration.
LDC is superior to a chronological load curve for planning base load and peak load plant capacity.
Easier determination of the total energy generated.
Direct visualization of the duration for which a specific load is exceeded.
Facilitates the selection of base load and peak load plant ratings.
Does not reveal the exact time of day when a specific load occurs.
Loses the chronological sequence of load variations.
Power system planning and economic load dispatch.
Selecting the number and size of generating units.
Option A is incorrect because the daily load curve shows total consumption over time, but the LDC reorders this data for analysis.
Option B is incorrect because the load factor is a ratio derived from the area, not the area itself.
Option C is synonymous with total units generated, but technically 'units' (kWh) is the correct standard unit for energy production.
D is correct тАФ The area under the Load Duration Curve represents the total energy (units) generated by the power plant for the considered time period.
Remember that the Load Factor is simply the ratio of the area under the load curve to the rectangle formed by the maximum demand and total time; always look for 'Energy' when dealing with area under power-time curves.
Get instant step-by-step AI explanations, full shift Previous Year Papers (SSC GD, RRB, SSC JE), and regional rank analysis on the official Examoogle App.
Free Download тАв 100K+ Aspirants