Variable Load Problem Terms

Consists of lights, fans, refrigerators, heaters, televisions, small motors for pumping water, etc. Most of the residential load occurs only for some hours during the day:

• Domestic Load

• Home Load

• Household Load

• Residential Load

Consists of lighting for shops, fans, and electric appliances used in restaurants, etc. The commercial load has seasonal variations due to the extensive use of air conditioners and space heaters:

• Business Load

• Commercial Load

• Retail Load

• Shop Load

Consists of load demand by industries. Small-scale industry requires a load of up to 25 kW, medium-scale industry between 25kW and 100 kW, and large-scale industry requires a load above 500 kW:

• Production Load

• Manufacturing Load

• Factory Load

• Industrial Load

Consists of street lighting, power required for water supply and drainage purposes. Street lighting load is practically constant throughout the hours of the night:

• Street Load

• Municipal Load

• Public Load

• City Load

This type of load is the electric power needed for pumps driven by motors to supply water to fields. Generally, this type of load is supplied for 12 hours during the night:

• Farm Load

• Irrigation Load

• Field Load

• Agriculture Load

This type of load includes tram cars, trolley buses, railways, etc. During the morning hour, it reaches peak value because people have to go to their workplace. After morning hours, the load starts decreasing and again rises during the evening since people start coming to their homes:

• Transit Load

• Transportation Load

• Traction Load

• Travel Load

The average of loads occurring on the power station in a given period (day or month or year) is known as: a) Mean Load b) Average Load c) Total Load d) Daily Load

• Mean Load

• Average Load

• Total Load

• Daily Load

The various peak demands of load over and above the base load of the station are known as: a) Excess Load b) Peak Load c) Surplus Load d) Extra Load

• Excess Load

• Peak Load

• Surplus Load

• Extra Load

The load on a power station varies from time to time due to uncertain demands of the consumers and is known as: a) Constant load b) Variable load on the station c) Steady load d) Stable load

• Constant load

• Variable load on the station

• Steady load

• Stable load

The curve showing the variation of load on the power station with respect to time is: a) Load Graph b) Demand Curve c) Power Curve d) Load Curve

• Load Graph

• Demand Curve

• Power Curve

• Load Curve