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The number of primary windings and secondary windings of a transformer are not the same.
The core of a transformer is laminated. Why?
Transformers are used in mobile chargers. Give reason(s).
The number of secondary windings in the coil of a transformer used in a microwave oven is 12 times the number of windings in the primary coil. If it is connected to a source of 220 V, what is the secondary voltage obtained from the transformer?
What is a transformer?
Draw the block diagrams of the step-up transformer and step-down transformer and write two uses of each.
To charge a laptop of 20V, a charger with 550 primary turns is connected to an A.C. source of 220 V. Calculate the number of secondary windings of the charger.
The number of secondary windings in the coil of a transformer used in a microwave oven is 10 times the number of windings in the primary coil. If it is connected to a source of 220 V, what is the secondary voltage obtained from the transformer?
The ratio of the number of the primary winding to the number of secondary windings of a transformer is 22:1. If an adopter with that transformer is connected to an electric circuit having a potential difference of 220 V, calculate the output voltage so obtained.
An electric material production company saw the demand of transformer in the market.
- If the company manufactures transformers with number of primary coil 200 turns and secondary coil 100 turns. What type of transformer is formed?
- If 50V DC is passed in the primary coil in the transformer manufactured by the company, what will be the secondary voltage?
- What is the relation between input and output energy in the transformers?
- What is the use of transformer given in no. '1', in our daily life?
Which physical quantity always remains the same in a transformer?
If number of turns of wire in primary coil of a transformer shown in the diagram is 4 times more than that in secondary coil. What will be the value of secondary voltage?