Advertisements
Advertisements
प्रश्न
How do the input and output powers in a transformer compare? State the assumption made.
Advertisements
उत्तर
Input power = output power
or Power fed in primary = power produced in secondary
Ep × Ip = Es × Is
Assumption made: zero energy loss happens.
APPEARS IN
संबंधित प्रश्न
The following diagram in Fig.10.42 shows a coil of several turns of copper wire connected to a sensitive centre zero galvanometer G near a magnet NS. The coil is free to move in the direction shown in the diagram.
(i) Describe the observation if the coil is rapidly moved.
(ii) How would the observation be altered if (a) the coil has twice as many turns (b the coil was made to move three times as fast?
Why is the iron core of a transformer made laminated (thin sheets) instead of being in one solid piece?
What is a transformer? On what principle does it work?
State the principle of a transformer.
Distinguish between Step up and Step Down Transformer.
What are step-up and step-down transformers?
Explain the construction of transformer.
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?
The self-inductance of a closely wound coil of 200 turns is 10 mH. Determine the value of magnetic flux through the cross-section of the coil when the current passing through the coil is 4 mA.
Derive the equation for a transformer.
