The primary coil of a transformer has 268,642 loops. The secondary coil has 4,84

Question

The primary coil of a transformer has 268,642 loops. The secondary coil has 4,842 loops. The primary coil has a 80 A current and 43 V.

a.) Is this a step-up or step-down transformer? How do you know?Choose one of the following. 1 It is a step-uptransformer because the primary current is greater than the primaryvoltage.
It is a step-downtransformer because the primary current is greater than the primaryvoltage.
It is a step-uptransformer because the primary has more loops than thesecondary.
It is a step-downtransformer because all transformers are step-downtransformers.
It is a step-downtransformer because the primary has more loops than thesecondary.
It is a step-uptransformer because all transformers are step-uptransformers.

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 1 It is a step-uptransformer because the primary current is greater than the primaryvoltage.
It is a step-downtransformer because the primary current is greater than the primaryvoltage.
It is a step-uptransformer because the primary has more loops than thesecondary.
It is a step-downtransformer because all transformers are step-downtransformers.
It is a step-downtransformer because the primary has more loops than thesecondary.
It is a step-uptransformer because all transformers are step-uptransformers. 1 It is a step-uptransformer because the primary current is greater than the primaryvoltage.
It is a step-downtransformer because the primary current is greater than the primaryvoltage.
It is a step-uptransformer because the primary has more loops than thesecondary.
It is a step-downtransformer because all transformers are step-downtransformers.
It is a step-downtransformer because the primary has more loops than thesecondary.
It is a step-uptransformer because all transformers are step-uptransformers. 1

Explanation / Answer

number loop in primary coil N1 =268,642         secondary =N2 = 4842          I1= 80A         V1 =4V It is astep-down transformer because the primary has moreloops than the secondary power in primary coil P = V1I1= 43*80 = 3.4KW voltage in secondary we know that N!/N2 =V1/V2 V2=  N2/N1 *V1 =------V and also V1/ V2 = I2/I1 I2 =  V1/V2   * I1 = -------A power in the secondary coil P = V2I2 = --------W I2 =  V1/V2   * I1 = -------A power in the secondary coil P = V2I2 = --------W

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