a) P = VI I = P/V = 20/240 =0.437A
b) From Ohm’s law, V =IR R=V/I =240/0.437 = 575.95?
Moraa orina answered the question on April 10, 2018 at 17:48
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A 5.5 kW immersion heater is used to heat water. Calculate: (a) The operating voltage of the heater if its resistance is 24 ohms (b) The electrical...
(Solved)
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Date posted:
April 10, 2018
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Date posted:
April 10, 2018
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Date posted:
April 10, 2018
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April 10, 2018
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April 10, 2018
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April 10, 2018
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Date posted:
April 10, 2018
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April 10, 2018
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April 10, 2018
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April 10, 2018
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April 10, 2018
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Date posted:
April 9, 2018
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Date posted:
April 9, 2018
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A wheel and axle is used to raise a load of 140N by a force of 20N applied to the brim of the wheel. If...
(Solved)
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Date posted:
April 9, 2018
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. A driving gear having 25teeth engages with a second gear with 20teeth. A third gear with 30 teeth on the
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(Solved)
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Date posted:
April 9, 2018
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Answers (1)
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A man uses an inclined plane to lift a 81kg mass through a vertical height of 1.0m. Given that the angle of
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(Solved)
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Date posted:
April 9, 2018
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Answers (1)
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A machine whose velocity ratio is 8 is used to lift a load of 300N. The effort required is 60N. calculate:
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(Solved)
A machine whose velocity ratio is 8 is used to lift a load of 300N. The effort required is 60N. calculate:
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Date posted:
April 9, 2018
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Answers (1)
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An effort of 250N raises a load of 900N through 5m in a machine. If the effort moves through 25m, find:
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(Solved)
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Date posted:
April 9, 2018
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Answers (1)
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A machine requires 6000J of energy to lift a mass of 55kg through a vertical distance of 8m. Calculate its efficiency.
(Solved)
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Date posted:
April 9, 2018
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Answers (1)
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A person of mass 60 kg climbs 3 m up a rope in 20 seconds. Find the average power developed by the person.
(Solved)
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Date posted:
April 9, 2018
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Answers (1)