ASSIGNMENT

Assignment

Chapter-1

Basics to Electrical Engineering

1. Define: (1)Electric current (2) Resistance (3) Electromotive Force

(4) Work (5) Power (6) Energy

2.Give any three name of materials used in insulators, conductors and semiconductors.

3.Write effect of temperature on resistance.

4. Explain factors affecting resistance.

5.State and explain ohm’s law with its application and limitations.

6. Resistance of a conductor is 25Ω at 20°C. Its resistance becomes 27.95 when its temperature is raised by 30°C. Find the resistance temperature coefficient of conductor at 20°C.

7. A length of wire has a resistance of 1.5 Ω. Find the resistance of another wire of the same material, twice in length and three times big in cross-sectional area.

Chapter-2

Electrical Circuit

1. Explain following terms.

(1) Node (2) Branch (3) loop (4) mesh

2. State and explain Kirchhoff’s Current law.

3. State and explain Kirchhoff’s Voltage law.

4. Explain series connection of resistance.

5. Explain parallel connection of resistance.

6. Three resistors 10 Ω, 20 Ω and 40 Ω are connected in parallel which draw current of 5 A from the supply mains. Calculate (1) Supply voltage (2) current flowing through each resistor.

7. In the network shown in figure2.1, find current flowing through each resistor.

8. Applying Kirchhoff’s law, find the magnitude and the direction of current flowing through galvanometer in the network shown in figure2.2

9. Applying Maxwell loop current method, find the current supplied by battery shown in figure.2.3

Chapter-3

Network Theorems

1. State Superposition Theorem and explain it.

2. State The venin’s Theorem and explain it.

3. State Norton’s Theorem and explain it.

4. Derive the equation of star connected network in the equivalent Delta.

Chapter-4

Electrostatics and capacitor

1. Laws of electrostatics coulomb’s Laws

2. Factors affecting the dielectric strength.

3. Types of capacitor explain with fig.

4. Explain capacitor in series and parallel with equation.

5. Explain charging and discharging of capacitor.

Chapter-5

Electromagnetic induction and inductor

1. Terms related to magnetic circuit.

1) M.M.F 2) Magnetic force 3)Magnetic field intensity

4) Permeability 5) Reluctance

2. Comparison of Magnetic circuit and Electric circuit

3. Faraday’s Laws of electromagnetic induction.

4. Co- efficient of mutual inductance

5. Explain coupling co –efficient

6. Explain hysteresis Loop