Objective Questions on Transformer Principle

  1. The basic function of a transformer is to change

    Under construction.

  2. The core flux in transformer depends mainly on

    Under construction.

  3. The frequency of a voltage at the secondary is

    Under construction.

  4. In a transformer the energy is conveyed from primary to secondary

    Under construction.

  5. The purpose of providing an iron core in a transformer is to

    Under construction.

  6. A transformer cannot raise or lower the voltage of a DC supply because

    Under construction.

  7. Transformer action requires a/an

    Under construction.

  8. The principle of working of a transformer is

    Under construction.

  9. A transformer

    Under construction.

  10. The magnetic flux of a transformer follows

    Under construction.

  11. Transfer of electrical power from primary to secondary in a transformer takes place

    Under construction.

  12. A transformer is connected to a constant voltage source. If the supply frequency decreases, the magnetic flux in the core will

    Under construction.

  13. Secondary electric current of a step down transformer is

    Under construction.

  14. Principal of statically induced emf is used in

    Under construction.

  15. An auto transformer is used only when

    Under construction.

  16. Which winding in a transformer has more number of turns?

    Under construction.

  17. A transformer, as compared to an amplifier, cannot increase

    Under construction.

  18. In which of following transformer part of primary winding also serves as the secondary winding?

    Under construction.

  19. The direction of induced emf in transformer can be found by

    Under construction.

  20. In an auto transformer, the primary and secondary are coupled

    Under construction.