Advertisements
Advertisements
प्रश्न
Which coil of a step up transformer is made thicker and why?
Advertisements
उत्तर
In a step-up transformer, the primary coil is made of thicker wire.
This is because in a step-up transformer the number of turns in the secondary coil is more than the number of turns in the primary coil.
As `E_s/E_p = N_s/N_p > 1` and `E_sI_s = E_pI_p`
`∴ E_s > E_p`
But Is < Ip. i.e more current flows through the primary coil. Therefore, one must use a thicker wire in the primary coil as compared to that in the secondary coil.
APPEARS IN
संबंधित प्रश्न
Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer.
Name the transformer used in the power transmitting station of a power plant.
Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.
The primary coil of a transformed has 800 urns and the secondary coil has 8 turns. It is connected to a 220 V a.c. supply. What will be the output voltage?
Draw a labelled diagram to show the various parts of a step-up transformer and step down transformer.
What are step-up and step-down transformers?
The output power in step-up transformer used in practice is ______.
The primary coil of a transformer has 800 turns and the secondary coil has 8 turns. It is connected to a 220 V ac supply. What will be the output voltage?
The primary coil having NP turns of an ideal transformer is supplied with an alternating voltage VP. Obtain an expression for the voltage VS induced in its secondary coil having NS turns.
In an ideal transformer, the turns ratio is `N_p/N_s = 1/2`. The ratio Vs : Vp is equal to (the symbols carry their usual meaning):
