Problem 3 : 1. A steam power station has an overall efficiency of 25% and 0·5 kg of coal is burnt per kWh of electrical energy generated. Calculate the calorific value of fuel. Heat equivalent of 1 kWh is 860 k calories. 2. A hydro-electric generating station is supplied from a reservoir of capacity 5*10^7 cubic metres at a head of 250 metres. Find the total energy available in kWh if the overall efficiency is 70%.

Problem 3 : 1. A steam power station has an overall efficiency of 25% and 0·5 kg of coal is burnt per kWh of electrical energy generated. Calculate the calorific value of fuel. Heat equivalent of 1 kWh is 860 k calories. 2. A hydro-electric generating station is supplied from a reservoir of capacity 5*10^7 cubic metres at a head of 250 metres. Find the total energy available in kWh if the overall efficiency is 70%.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter17: Resistive-inductive Series Circuits

Section: Chapter Questions

Problem 3RQ: 3. What is power factor?

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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.
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