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The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage the power are 220 V and 1100 W respectively. Calculate: i) number of turns in the secondary (ii) the current in the primary

The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage the power are 220 V and 1100 W respectively. Calculate:
i) number of turns in the secondary
(ii) the current in the primary

Grade:11

2 Answers

Saurabh Koranglekar
askIITians Faculty 10336 Points
2 years ago
576-231_11.PNG
Vikas TU
14149 Points
2 years ago
Dear Student,
Np=100r=100Vp=220 VPinput=1100 W(1) r=NsNpNs=r×NpNs=100×100=10000(2) VsVp=rVs=r×VpVs=100×220=22000 volt(3) Pinput=VpIpIp=PinputVpIp=1100220=5 A IpIs=rIs=IprIs=5100=0.05 A(4) Ip=5 A(5) For ideal transformer,Power in secondary=Power in primary=1100 W

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