A transformer has 200 turns in the primary coil and 50 turns in the secondary coil. If the primary voltage is 240 V, what is the secondary voltage? (2023)
Practice Questions
1 question
Q1
A transformer has 200 turns in the primary coil and 50 turns in the secondary coil. If the primary voltage is 240 V, what is the secondary voltage? (2023)
60 V
120 V
240 V
480 V
Using the transformer equation Vp/Vs = Np/Ns, we find Vs = Vp × (Ns/Np) = 240 V × (50/200) = 60 V.
Questions & Step-by-step Solutions
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Q
Q: A transformer has 200 turns in the primary coil and 50 turns in the secondary coil. If the primary voltage is 240 V, what is the secondary voltage? (2023)
Solution: Using the transformer equation Vp/Vs = Np/Ns, we find Vs = Vp × (Ns/Np) = 240 V × (50/200) = 60 V.
Steps: 7
Step 1: Identify the number of turns in the primary coil (Np) and the secondary coil (Ns). Here, Np = 200 turns and Ns = 50 turns.
Step 2: Identify the primary voltage (Vp). Here, Vp = 240 V.
Step 3: Write down the transformer equation: Vp/Vs = Np/Ns.
Step 4: Rearrange the equation to find the secondary voltage (Vs): Vs = Vp × (Ns/Np).
Step 5: Substitute the known values into the equation: Vs = 240 V × (50/200).
Step 6: Calculate the fraction (50/200) which equals 0.25.
Step 7: Multiply 240 V by 0.25 to find Vs: Vs = 240 V × 0.25 = 60 V.
