# ELECTRICAL CIRCUIT AND NETWORK TOTAL LAB

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## Description

The Trainer should have at last the following facilities

• Study the characteristics of DC series, parallel, series-parallel or mixed circuit.
• Verification of Ohm’s Law, Kirchhoff’s Voltage Law (KVL), and Kirchhoff’s Current Law (KCL), The venin’s Theorem, Norton’s Theorem, Superposition Theorem, Maximum Power Transfer Theorem, Reciprocity Theorem etc.
• Study the characteristics of pure resistive, inductive, pure capacitive circuit as individual, series, parallel connected condition.
• Measuring Effective resistance, current, voltage, active power, apparent power, reactive power, power factor, constructing vector diagram of pure resistive, inductive pure capacitive, R-L, R-C, R-L-C series circuit or parallel circuit.
• Determining phase sequence of 3φ EMF source and measuring 3φ voltage, current, power, power factor of star and delta connected resistive, inductive, capacitive load and also 3φ star connected loads neutral voltage, neutral current of balanced and unbalanced load.
• Measuring resonant frequency, Q  factor of R-L-C series and parallel circuit.
• Study the characteristics of PFI device and improving power factor of a plant or a load.

AC Power source for AC practical :

Input voltage: 1φ = 220V AC, 50Hz ; 3 φ  = 380 – 400V AC;

Output Capacity:

Resistive Load: 220V, Capacity 1-φ = 1000 W ; 3- φ  = 1000 W;

Inductive Load : 220V, 50 Hz. Capacity 1- φ  = 120VAR-300VAR  , 3- φ  =350VAR ;

Capacitive Load : 220V, 50 Hz., Capacity 1- φ = 200VAR, 3- φ  = 200 VAR ;

DC Power Source for DC Practical:

2Sets  DC EMF source arrangement of Cells and Batteries

Measuring instrument facilities  should have as follows ( minimum)

1. DCV & ACV ; Range mV to 600V – 3 nos
2. DCA & ACA ; Range µA to 10 A – 3 nos
3. Resistance Ω to 40 M  Ω                       – 2 nos
4. capacitance nF to 100 µF                      – 2 nos
5. Frequency 1 Hz to 20 MHz – 2 nos
6. Digital Wattmeter up to 6000 watts      – 1 no
7. Power factor 0.01 to 1. – 1 no

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