Advertisements
Advertisements
प्रश्न
State the principle of transformer working with the help of a diagram
Advertisements
उत्तर
It works on the principle of mutual induction. Here, a changing alternating current in primary coil produces a changing magnetic field, which, in turn, induces a changing alternating current in the secondary coil.
संबंधित प्रश्न
Mention various energy losses in transformer device
Why is the core of a transformer laminated?
The transformer is used in ______ current circuits.
The output power in step-up transformer used in practice is ______.
A 100% efficient transformer has 100 turns in the primary and 50 turns in its secondary coil. If the current in the secondary coil is 6 A, then the current in the primary coil is ______.
For an ideal step-down transformer, the quantity which is constant for both the coils is ______.
An iron rod is placed parallel to magnetic field of intensity 2000 Am-1. The magnetic flux through the rod is 6 × 10−4 Wb and its cross-sectional area is 3 cm2. The magnetic permeability of the rod in Wb A-1m-1 is ______.
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
What does the primary coil draw from the source?
What drives current through the connected load and delivers AC output?
