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The essential difference between a d.c d...

The essential difference between a `d.c` dynamo and an `a.c` dynamo is that

A

a.c. has an electromagent but d.c. has a permanent magnet

B

a.c. will generate a higher voltage

C

a.c. has slip rings but the d.c has a commutator

D

a.c. dynamo has a coil wound on soft iron, but the d.c. dynamo has a coil wound on copper

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Knowledge Check

  • The essential difference between an AC generator and a DC generator is that

    A
    Ac generator has an electro-magnet while a DC generator has permanent magnet.
    B
    DC generator will generate a higher voltage
    C
    AC generator will generate a higher voltage
    D
    AC generator has slip rings while the DC generator has a communtator.

  • The essential difference between an AC generator and a DC generator is that:

    A
    AC generator has an electromagnet while a DC generator has permanent magnet,
    B
    DC generator will generate a higher voltage,
    C
    AC generator will generate a higher voltage,
    D
    AC generator has slip rings while the DC generator has a commulator.

  • If the potential difference between A and D is V, what will be potential difference between F and C. each of the resistance is R.

    A
    `V//3`
    B
    `V//4`
    C
    `V//6`
    D
    `V//8`

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