Question

Questions [L] A transformer works with: AC current, BC current, CC current, DC current (2) The input side of a transformer is known as the: initial, startup, primary, input. [] The iron core transfers: current, voltage, induction, magnetism. [4] The changing magnetic flux through the secondary coil creates: 2 electricity, magnetic poles, transformers, the flux capacitor. [5] The current flowing through the primary coil creates: magnetism, electric poles, transformers, the flux inductor, [6] The primary coil has the less turns. Compared to the secondary coil, the primary coil has: more voltage, the same voltage, less voltage. [7] The primary coil has the less turns. Compared to the secondary coil, the primary coil has: more current, the same current, less current. [8] The primary coil has the less turns. Compared to one turn of the secondary coil, one turn in the primary coil has ideally: more magnetic flux, the same magnetic flux, less magnetic flux. [9] A transformer uses: reinforced iron, flux iron, soft iron, hard iron. [10] AC is usually transmitted at: hundreds of volts, thousands of volts, hundreds of kilovolts, tens of kilovolts. 25

Answer 1

1. A transformer works with
AC Current [ because changing current is required for magnetic induction to work]

2. The input side of the transformer is known as
Primary

3. The iron core transfers
magnetism [ the iron core is the conduit for magneti flux, which is the magnetism]

4. The changing magnetic flux through the secondary coil creates
electricity [ the changing magnetic flux actually creates potential difference, and this potential difference causes current to flow if the circuit is complete in the secondary coil]

5. The current flowing through the primary coil creates :
magnetism [ it is the reverse of what happens in the secondary coil]

6. The primary coil has less turns, this means its a step up transformer and increases voltage
hence compared to secondary coil, the primary coil has less voltage
less voltage

7. The primary coil has less turns, this means its a step up transformer and increases voltage
hence compared to secondary coil, the primary coil has less voltage,
now, for same power lower voltage means higher current as VI is contant (power transmitted by primary = power recieved by secondary, in case of an ideal transformer)
more current

8. The primary coil has less turns, this means its a step up transformer and increases voltage
hence compared to secondary coil, the primary coil has less voltage
compared to one turn of secondary coil, ideally one turn in primary has same voltage, as same induction is connecting both the coils
Same magnetic flux

9. A transformer uses :
soft iron core

10. AC is usually transmitted at
hundreds of kilovolts (like 110 kV, 440 kV etc )