Question
(a) A resistor is rated for 10k, 1W. What is its maximum voltage and current ratings. (b) An electric motor in a blender that is
(a) A resistor is rated for 10kΩ, 1W. What is its maximum voltage and current ratings.
(b) An electric motor in a blender that is connected to a 220V voltage source takes a current of 8A. If the efficiency of the motor is 80%, find the output power of the motor required to blend two ball of kenkey.
(c) A 20Ω resistance is connected to an unknown resistance R and the two are connected across a 220V DC supply. The power loss in R resistor is 50W. Determine the value of R.
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Electric Machinery
Authors: Charles Kingsley, Jr, Stephen D. Umans
6th Edition
71230106, 9780073660097, 73660094, 978-0071230100
