investigatory project in physics for class 11 cbse pdf

Photometric Study of Eclipsing Binary Stars How Do Varying Amplitudes, Weights, and Lengths Affect the Period of Motion of a Pendulum? over long distances.Effects of Rotational Inertia on a Fastball Transformers are used in the transmissions of a.c. Transformers are used in voltage regulators and stabilized power supplies. In voltage regulator for T.V., refrigerator, computer, air conditioner, etc.Ī step down transformer is used for welding purposes.Ī step down transformer is used for obtaining large current.Ī step up transformer is used for the production of X-Rays and NEON advertisement.

USES OF TRANSFORMER A transformer is used in almost all a.c. Repeat all steps for other self made transformers by changing number of turns in primary and secondary coil. Now connect s1and s2to A.C main and again measure voltage and current through primary and secondary coil of step up transformer. Similarly, measure the output voltage and current through s1and s2. Connect p1, p2 to A.C main and measure the input voltage and current using A.C voltmeter and ammeter respectively. Cover the primary coil with a sheet of paper and wound relatively smaller number of turns (say 20) of thick copper wire on it. Number of turnings in the secondary coil and primary coil of a self made transformer.Ģ. OBJECTIVE To investigate the relation between the ratio of – 1. Transformer is, therefore, an essential piece of apparatus both for high and low current circuits. voltages is called a step-down transformer.

In a transformer, the electrical energy transfer from one circuit to another circuit takes place without the use of moving parts.Ī transformer which increases the voltages is called a step-up transformer. In electronic, measurement and control circuits, transformer size may be so small that it weight only a few tens of grams where as in high voltage power circuits, it may weight hundred of tones. As such transformers are built in an amazing strength of sizes. A transformer is most widely used device in both low and high current circuit. INTRODUCTION The transformer is a device used for converting a low alternating voltage to a high alternating voltage or vice-versa.Ī Transformer based on the Principle of mutual induction according to this principle, the amount of magnetic flux linked with a coil changing, an e.m.f is induced in the neighboring coil.Ī transformer is an electrical device which is used for changing the A.C.

Investigatory project in physics for class 11 cbse pdf