Rajasthan Police Constable Model Paper 6

CONCEPT:
Transformer:
An electrical device that is used to transfer electrical energy from one electrical circuit to another is called a transformer.
There are two types of transformer:Step-up transformer:

• The transformer which increases the potential is called a step-up transformer.
• The number of turns in the secondary coil is more than that in the primary coil.

Step-down transformer:

• The transformer which decreases the potential is called a step-down transformer.
• The number of turns in the secondary coil is less than that in the primary coil.

EXPLANATION:

• As in the step-up transformer, the number of coils in the secondary coil is more than that in the primary coil. So the electrical potential increases.
• A step-up transformer converts low voltage at high current into a high voltage at low current. So option 4 is correct.