EXPERIMENT NO 1 INDUCTANCE OF SOLENOID Aims To

Fig (1) set up of inductance of solenoid coil.

4. Repeat the same steps, but this time you need to use different solenoid

EXPERIMENT NO. (2) EFFICIENCY OF TRANSFORMER Purpose of Experiment: The study of transformer, and

EXPERIMENT NUMBER (3) MAGNETIC HYSTERESIS Purposes: 1. Learning basic principles of magnetic hysteresis. 2.

Fig (1), set up of the electrical circuit of magnetic hysteresis Exp.

Slides: 14

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EXPERIMENT NO (1) INDUCTANCE OF SOLENOID Aims: To find the inductance of different solenoid coils. Apparatus: Function generator (Square wave voltage). Oscilloscope (CRO). Capacitor. Two coils of different lengths, diameter 2 r and number of turns N are available.

Theoretical Calculation:

PROCEDURE:

Fig (1) set up of inductance of solenoid coil.

4. Repeat the same steps, but this time you need to use different solenoid coils and then calculate inductance (Lexp, Lth) by using equation (1, 2)

EXPERIMENT NO. (2) EFFICIENCY OF TRANSFORMER Purpose of Experiment: The study of transformer, and finding its efficiency: 1. Without load. 2. With load. Equipment 1. The alternating current source (AC). 2. Transformer (L = 2 m. H and 9 m. H). 3. Two Digital Voltmeters. 4. Two Digital Ammeters. 5. Resistors (100 Ω, and 200 Ω).

METHODS STEP-UP TRANSFORMER:

STEP-DOWN TRANSFORMER:

EXPERIMENT NUMBER (3) MAGNETIC HYSTERESIS Purposes: 1. Learning basic principles of magnetic hysteresis. 2. Learning some properties of ferromagnetic materials. 3. Determine their dissipation energy of remagnetization. Equipment: 1. Oscilloscope (CRO). 2. Resistance (20 Ω). 3. Resistance box. 4. Transformer (N 1 = 300 turns, N 2 = 600 turns and vice versa). 5. Power supply (AC 24 or 48 volt). 6. Capacitor (µf).

Fig (1), set up of the electrical circuit of magnetic hysteresis Exp.