Theprimary coil of a transformer has 4,677 loops. The secondary coilhas 564,121
ID: 1728437 • Letter: T
Question
Theprimary coil of a transformer has 4,677 loops. The secondary coilhas 564,121 loops. The primary coil has a 51 A current and 18V.
a.) Is this a step-up or step-down transformer? How do you know?Choose one of the following.
1
It isa step-down transformer because all transformersare step-down transformers. It is a step-downtransformer because the primary current is greater than the primaryvoltage. It is astep-up transformer because the primary current isgreater than the primary voltage. It is astep-down transformer because the secondary hasmore loops than the primary. It is a step-up transformerbecause the secondary has more loops than the primary. It is astep-up transformer because all transformers arestep-up transformers.
b.) Determine the power of the primary coil.
2 W
c.) Assuming no losses, determine the power of the secondarycoil.
3 W
d.) Calculate the voltage in the secondary coil.
4 V
e.) Calculate the current in the secondary coil.
5 A
Explanation / Answer
a) It is a step-up transformerbecause the secondary has more loops than the primary. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ b) No. of loops primary coil, N1 = 4677 No. of loops in secondary coil, N2 = 564,121 Current on the primary coil, I1 = 51 A Voltage of primary, V1 = 18 V Power of primary coil, P1 = V1 I1 = 18 * 51 = 918 W ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ c) In case of no losses, Power of secondary coil = Power of primarycoil = 918 W ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ d) V2 / V1 = N2 / N1 V2 / 18 = 564121 / 4677 Voltage in the secondary coil, V2 =2171.1 V ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ e) I1 / I2 = N2 / N1 I2 = I1 * ( N1 / N2 ) Current in the secondary coil, I2 = 51 * (4677 / 564121 ) = 0.42 A
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.