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1. A generating station has an overall efficiency of 15% and 0-75 kg of coal is burnt per kWh by the station. Determine the calorific value of coal in kilocalories per kilogram. [7644 kcal/kg] A 7 AALAI

1. A generating station has an overall efficiency of 15% and 0-75 kg of coal is burnt per kWh by the station. Determine the calorific value of coal in kilocalories per kilogram. [7644 kcal/kg] A 7 AALAI

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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hours, find the fall in reservoir. [5.5. 105 kWh ; 27.8 cm] 4. It has been estimated that a minimum run-off of approximately 94 m3/sec will be available at a hydraulic project with a head of 39 m. Determine the firm capacity and yearly gross output. [3600 kW, 315-36. 106 kWh]Hint. Wt. of water flowing/sec = 94 1001000. a f3 kg 5. A hydroelectric power station is supplied from a reservoir having an area of 50 km2 and a head of 50 m. If overall efficiency of the plant is 60%, find the rate at which the water level will fall when the station is generating 30,000 kW. [7-337 mm/hour] 6. A hydro-electric plant has a catchment are of 120 square km. The available run off is 50% with annual rainfall of 100 cm. A head of 250 m is available on the average. Efficiency of the power plant is 70%. Find (i) average power produced (ii) capacity of the power plant. Assume a load factor of 0.6. [(i) 3266 kW (ii) 5443 kW]
Transcribed Image Text:hours, find the fall in reservoir. [5.5. 105 kWh ; 27.8 cm] 4. It has been estimated that a minimum run-off of approximately 94 m3/sec will be available at a hydraulic project with a head of 39 m. Determine the firm capacity and yearly gross output. [3600 kW, 315-36. 106 kWh]Hint. Wt. of water flowing/sec = 94 1001000. a f3 kg 5. A hydroelectric power station is supplied from a reservoir having an area of 50 km2 and a head of 50 m. If overall efficiency of the plant is 60%, find the rate at which the water level will fall when the station is generating 30,000 kW. [7-337 mm/hour] 6. A hydro-electric plant has a catchment are of 120 square km. The available run off is 50% with annual rainfall of 100 cm. A head of 250 m is available on the average. Efficiency of the power plant is 70%. Find (i) average power produced (ii) capacity of the power plant. Assume a load factor of 0.6. [(i) 3266 kW (ii) 5443 kW]
STATION 1. A generating station has an overall efficiency of 15% and 0-75 kg of coal is burnt per kWh by the station. Determine the calorific value of coal in kilocalories per kilogram. [7644 kcal/kg] 2. A 75 MW steam power station uses coal of calorific value of 6400 kcal/kg. Thermal efficiency of the station is 30% while electrical efficiency is 80%. Calculate the coal consumption per hour when the station is delivering its full output. [42 tons] 3. A 65,000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consumption kWh is 0-5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii) coal per consumption per day. [(i) 28.7% (ii) 312 tons] 4. A 60 MW steam power station has a thermal efficiency of 30%. If the coal burnt has a calorific value of 6950 kcal/kg, calculate : (i) the coal consumption per kWh, (ii)the coal consumption per day. [(i) 0-413 kg (ii) 238 tons]
Transcribed Image Text:STATION 1. A generating station has an overall efficiency of 15% and 0-75 kg of coal is burnt per kWh by the station. Determine the calorific value of coal in kilocalories per kilogram. [7644 kcal/kg] 2. A 75 MW steam power station uses coal of calorific value of 6400 kcal/kg. Thermal efficiency of the station is 30% while electrical efficiency is 80%. Calculate the coal consumption per hour when the station is delivering its full output. [42 tons] 3. A 65,000 kW steam power station uses coal of calorific value 15,000 kcal per kg. If the coal consumption kWh is 0-5 kg and the load factor of the station is 40%, calculate (i) the overall efficiency (ii) coal per consumption per day. [(i) 28.7% (ii) 312 tons] 4. A 60 MW steam power station has a thermal efficiency of 30%. If the coal burnt has a calorific value of 6950 kcal/kg, calculate : (i) the coal consumption per kWh, (ii)the coal consumption per day. [(i) 0-413 kg (ii) 238 tons]
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