7. 10 points Transfomers My Notes Ask Your The primary coil of a transformer has

Question

7. 10 points Transfomers My Notes Ask Your The primary coil of a transformer has 3,488 loops. The secondary coil has 946,959 loops. The primary coil has a 68 A current and 56 V e.) Is this a step-up or step-down transformer? How do you know? Choose one of the following It is step-up transformer because all transformers are step-up transformers. It is a step-down transtormer because all transformers are step-down transformers It is a step-down transformer because the primary current is greater than the primary voltage. It is a step-up transformer because the primary current is greater than the primary voltage. It is a step-up transformer because the secondary has more loops than the primary It is step-down transformer because the secondary has more loops than the primary. b.) Determine the power of the primary coil. c.) Assuming no losses, determine the power of the secondary coil. d.) Celculate the voltage in the secondary coil. e.) Calculate the current in the secondary coil. -10 points Faraday's Law Stretched wire lkoops My Notes Ask Your The area enclosed by the wire loop in the figure below is reduced from 29 cm2 to 11 cm2 in a time interval of 0.13 s. The magnitude of the magnetic field is 0.68 T & the wire loop has a resistance of 0.004 . Find the voltage & current induced in the wire. current direction Select xXXxX Induced x cunent

Explanation / Answer

Only one question can be posted as per chegg guidelines

a)

Answer is It is step-up transformer because secondary has more loops than the primary

b)

Pprimary=VPIP =(68)(56) =3808 Watts

c)

Psecondary=Pprimary=3808 Watts

d)

From transformer turns ratio

Vsecondary/Vprimary =Nsecondary/Nprimary

Vsecondary =(946959/3488)*56 =15203.47 Volts

e)

Psecondary =VsecondaryIsecondary=3808

Isecondary=3808/15203.46 =0.2505 A

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