Electrical Power Plant

A natural waterfalls, 50 meters high, consistently discharges 1.3 m³ per second. A mini hydroelectric plant is to be constructed at the bottom of the waterfalls. Calculate the electric generator kW rating, assuming 90% mechanical to electrical conversion efficiency and water turbine design efficiency of 70%.

A power plant gets water from a dam from a height of 122.45 m at the rate of 1000 cubic meters per minute. If the output of the plant is 15,000 kW, what is the plant efficiency?

A waterfall is 60 meters high. It discharges at a constant rate of 1.0 cubic meter per second. A mini-hydro electric plant is to be constructed below the waterfalls. The turbine efficiency is 80% and the generator efficiency is 95%. Calculate the kW output of the generator.

A power plant gets water from a dam from a height of 100 meters at the rate of 1000 cubic meters per minute. If the overall efficiency of the plant is 75%, what is the kW output of the plant?

A power plant consumes 100,000 pounds of coal per hour. The heating value of the coal is 12,000 BTU per pound. The overall plant efficiency is 30%. What is the kW output of the plant?

A certain coal-fired power plant has a heat rate of \(2.88 \times 10^6\) calories per kW-hr. Coal costs P 2,500 per ton. How much is the fuel cost component of producing one kW-hr? Assume the heating value of coal used equal to 13,000 BTU/lb.

A coal power plant has an overall plant efficiency of 28%. Coal with a heating value of 12,000 BTU per pound cost P 1.50 per pound. What is the fuel cost for producing one kW-hr?

A 100 MW coal fired power plant has an average heat rate of 9500 BTU per kW-hr. The plant load factor is 75%. The heating value of the coal is 12,000 BTU per pound. Calculate the amount of coal usage for one day.

To produce one kW-hr, a power plant burns 0.9 lb of coal with a heating value of 13,000 BTU. What is the heat rate of the plant?

The current loads of four circuits are as follows:
Circuit No.1 = 25 amperes
Circuit No.2 = 38 amperes
Circuit No.3 = 18 amperes
Circuit No.4 = 45 amperes
If the diversity factor is 1.5, what is the minimum ampacity of the feeder conductor?

The power customer has four feeder circuits of 220 V, three-phase. The circuits have maximum demand as follows:
Circuit no. 1 = 35 A
Circuit no. 2 = 46 A
Circuit no. 3 = 72 A
Circuit no. 4 = 57 A
The diversity factor is 1.5, determine the maximum kVA demand with the customer.

A substation transformer is to serving the following loads:
Classification | Total load | Demand factor
Lighting | 300 kW | 60%
Power | 1200 kW | 80%
Heating | 500 kW | 90%
If the diversity factor among the load types is 1.5, determine the maximum demand on the transformer.

The average weekly energy generated by a thermal plant is 7,000,000 kW-hr. The peak load of the plant is 75,000 kW during the week. If the plant has an installed capacity of 100 MW solve for the load factor of the plant.

A 55,000 kW thermal plant of National Power Corporation delivers an annual output of 238,000,000 kW-hr with a peak load of 44 MW. What is the capacity factor?

The metering of a power customer was read and gave the following data.
kW-hr = 200,000
kVAR-hr = 180,000
Maximum demand = 380 kW
Billing days = 30
What is the load factor?

What is the annual capacity factor of the plant if the annual energy produced in a 150 MW power plant is \(500 \times 10^{6}\) kWhr?

The efficiency of thermal plant is approximately _.

What is the total energy generated by a station in kWhr in a year if its maximum demand and annual load factor is 150 kW and 45%, respectively?

The purposes of a grid system is to

The efficiency of thermal plant is approximately