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7. Ten electric heaters, each taking 200 W were used to dry out on site an electric machine which had been exposed to a water spray. They were used for 60 hours on a 240 V supply at a cost of twenty paise/kWh. Calculate the values of following quantities involved : (a) current (b) power in kW (c) energy in kWh (d) cost of energy. [(a) 8.33 A (b) 2 kW (c) 120 kWh (d) Rs. 24]

7. Ten electric heaters, each taking 200 W were used to dry out on site an electric machine which had been exposed to a water spray. They were used for 60 hours on a 240 V supply at a cost of twenty paise/kWh. Calculate the values of following quantities involved : (a) current (b) power in kW (c) energy in kWh (d) cost of energy. [(a) 8.33 A (b) 2 kW (c) 120 kWh (d) Rs. 24]

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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7. Ten electric heaters, each taking 200 W were used to dry out on site an electric machine which had been exposed to a water spray. They were used for 60 hours on a 240 V supply at a cost of twenty paise/kWh. Calculate the values of following quantities involved : (a) current (b) power in kW (c) energy in kWh (d) cost of energy. [(@) 8.33 A (b) 2 kW (c) 120 kWh (d) Rs. 24]
Transcribed Image Text:7. Ten electric heaters, each taking 200 W were used to dry out on site an electric machine which had been exposed to a water spray. They were used for 60 hours on a 240 V supply at a cost of twenty paise/kWh. Calculate the values of following quantities involved : (a) current (b) power in kW (c) energy in kWh (d) cost of energy. [(@) 8.33 A (b) 2 kW (c) 120 kWh (d) Rs. 24]
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