5. (20 points) A certain transformer has 2000 turns in the primary and 400 turns in the secondary. The rms voltage into

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5 20 Points A Certain Transformer Has 2000 Turns In The Primary And 400 Turns In The Secondary The Rms Voltage Into 1 (1.35 MiB) Viewed 20 times

5. (20 points) A certain transformer has 2000 turns in the primary and 400 turns in the secondary. The rms voltage into the primary is 120 V. a. (4 points) What is the rms voltage in the secondary? V₁ (Primary) = 120V 1 N₁ (primary) = 2000 №₂ (VI) = N₂ (Secondary) = 400 V₂ = ? 400 (120V) → 24 v = V₂ V₂ V₁ = 4 V₂ = ? VIMS 120 = NI N₁ 2000 384.85 t b. (4 points) If a bulb plugged into the secondary has an output power of 60 W, what is its current, and resistance? , P₂ = 1₂ V₂ = 1₂ = √₂ V₁ = 120 V V₂ = 24V P₂ 1 4 V₂ = I₂ R₂ R₂= 2 E 24V 2.5A 9.6 R = R5 resistance of Secondary c. (4 points) For the situation in b, what is the current in the primary and what effective resistance does it feel? V₁ = 120 V (primary), I, =?, V₂ = 24V, I₂ = 2.5A L9 V₁ I₁ = V₂ I ₂ → I₁ = (24) (2.5A) = > V₁ = I₁ R₁ = R₁ = "¼/1₁ = 12010. SA Roy Vz Iz Y₁ = 0.5A = I. 240 4 d. (4 points) If the secondary is open there should be no current in either coil. On the other hand, the primary in this situation is a (self) inductor being driven by an AC source. What must be true about the inductive reactance and the inductance? (Possible answers might be big, small, larger than the resistance of the wires, etc. Make certain to explain your answer.) we C it lesso VL = IXL = IwL → The current in the primary is U.SA (Small) than the The effective resistance is 240-2 (big, to 3 The Inductive reactance is proportional to inductance and must be big in the primary for current to be small. y's compend to what? e. (4 points) Allowing current to flow in the secondary actually raises the amount of current that flows through the primary, what does this say about flux generated by the current in the secondary compared to that in the primary? (Possible answers include same direction, opposite direction, bigger, smaller, in phase, out of phase, etc. Make certain to explain your answer.) decreasing (negative) ↳ The flux generated by the current in the secondary could be smaller That way the induced current that flows through the primary will increase. Hence, why allowing this scenario to happen raises the amount of current in primary. A15 62.5% or 24v ³₂ current in Secondary A the