The primary coil of a transformer has 2,571 loops. The secondary coil has 800,03

Question

The primary coil of a transformer has 2,571 loops. The secondary coil has 800,035 loops. The primary coil has a 35 A current and 24 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-downtransformer because the primary current is greater than the primaryvoltage.
It is a step-downtransformer because all transformers are step-downtransformers.
It is a step-downtransformer because the secondary has more loops than theprimary.
It is a step-uptransformer because the primary current is greater than the primaryvoltage.
It is a step-uptransformer because all transformers are step-uptransformers.
It is a step-uptransformer because the secondary has more loops than theprimary.


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

Explanation / Answer

. 1.   Part a: 2.      This is a "step-up transformer because thesecondary has more loops than the primary." . 3.   Part b: 4.      Power of primary coil = V*I =(24 volts)*(35 ampere) = 840Watts 5.      Power of secondary (nolosses) = Power of the primary coil = 840 Watts 6.      Voltage of the secondary =(n2/n1)*(voltage of primary) 7.      Voltage of the secondary =[(800035) / (2571)]*(24 volts) = 7.468E+3 volts = 7468.2 volts 8.      Current within the secondary= (n1/n2)*(current of primary) 9.      Current within the secondary= [(2571) / (800035)]*(35 ampere) = 112.48E-3 ampere = 0.11248 ampere . 10.   Check: Power secondary = (7.46E+3volts)*(112.48E-3 ampere) = 840Watts      ;   checkverifies results. .

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