Diploma in ECE Study Materials | ELECTRICAL CIRCUITS AND INSTRUMENTATION | Yuvasallinfo
Diploma in ECE Study Materials | ELECTRICAL CIRCUITS AND INSTRUMENTATION | Yuvasallinfo
4040320 ELECTRICAL CIRCUITS AND INSTRUMENTATION
Unit-1 Syllabus
D.C.CIRCUITSAND THEOREMS
1.1 Definition and Unit:
Voltage, current, power, resistance and conductance .
1.2 Electrical laws:
Ohm’s law – Simple problems in ohm’s law – Kirchoff’s current law and Kirchoff’s voltage law.
1.3 Basic DC circuits:
Series and Parallel connections of resistors – Voltage and Current division in series and parallel circuits – Mesh analysis for DC circuits (simple problems).
1.4 Network theorems:
Thevenin’s theorem –Superposition theorem – Maximum power transfer theorem (Statement, Explanation, Simple problems).

Important 3 Mark Questions
- Define voltage and write its unit.
- Define current and write its unit.
- Define resistance and write its unit.
- State ohm’s law.
- State Kirchhoff’s current law.
- State super position theorem.
- State Kirchhoff’s voltage law.
- State Thevenin’s theorem.
- State relationship between voltage and power.
- Draw the equivalent circuit of maximum power transfer theorem
- Draw the Thevenin’s equivalent circuit.
- Give the formula for finding load current in Thevenin’s equivalent circuit.
- Write the power at maximum condition at load resistance when the voltage transferred from source to load resistance.
- Give the equivalent resistance expression for resistor connected in parallel.
- Give the equivalent resistance expression for resistor connected in series.
- State the two types of Kirchhoff’s laws.
- Define Power, Energy and write its Unit.
- Define Mesh Analysis.
Important 14 Mark Questions
- Explain kirchoff’s laws?
- With a neat diagram explain Super position theorems?
- With a neat diagram explain Thevenin’s theorem?
- With a neat diagram explain maximum power transfer theorem?
- Explain Mesh Analysis.
- Explain Series and Parallel Resistance
- Explain Voltage and Current division in series and parallel circuits










