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Q2a. [10 marks] Two coils are tightly wound on a magnetic core having a mean length of (100-1X) cm and a core diameter o
Posted: Tue Jun 07, 2022 12:31 pm
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- Q2a 10 Marks Two Coils Are Tightly Wound On A Magnetic Core Having A Mean Length Of 100 1x Cm And A Core Diameter O 1 (31.78 KiB) Viewed 44 times
Q2a. [10 marks] Two coils are tightly wound on a magnetic core having a mean length of (100-1X) cm and a core diameter of (2.5Y) cm. The relative permeability of the magnetic material is (2Y00). If the mutual inductance between the coils is 25 mH and one coil has 200 turns, determine the number of turns on the other coil. Q2b. [10 marks] A certain load draws a current of (12+0.Y) A at a lagging power factor of (0.6X) from a 120 V, 60 Hz source. The electric supply
company imposes a penalty if the power factor drops below 0.9. a. What size capacitor must be used to avoid the penalty? (5) b. What would be the size of capacitor required to ensure a unity power factor? (5)