UNIT I - Assignment

SNS College of Technology, Coimbatore-35. (Autonomous) Second Semester Electrical & Electronics Engineering 19EEB102 – ELECTRIC CIRCUIT ANALYSIS ASSIGNMENT QUESTIONS : 1 PART A - TWO MARK 1. A circuit consist of two resistances in parallel, of 25 Ω and 15 Ω, the equivalent resistances is________ (a) 9.375 (b) 40 (c) 375 (d) 1 2. Ohm’s law is not applicable to (a) DC circuits (b) high currents (c) small resistors (d) semi conductors 3. Calculate the total resistance of the circuit where the resistance R1=R2=R3= 5 ohm are all connected in parallel 4. State Ohm’s law and its limitations 5. State KCL with expression 6. State KVL with expression 7. Two resistances R1 and R2 give a combined resistance of 4.5 ohms when in series and 1 ohm when in parallel. The resistances are (a) 3 ohms and 6 ohms (b) 3 ohms and 1.5 ohms (c) 9 ohms and 6 ohms (d) 1 ohms and 6 ohms PART B –12 MARK 8. Two resistances 15 ohm and 20 ohm are connected in parallel. A resistor of 12 ohm is connected in series with this combination, A supply voltage of 120V is applied across the entire circuit. Find the circuit current. (6 mark) 9. State Mesh analysis and Nodal analysis (6 mark) 10. Find the voltage across A and B in the circuit shown below.( 4 mark) 11. Find the equivalent resistance of the circuit given and find the current delivered by the source (4 mark) 12. Three bulbs are connected in parallel across 110V. Each bulb is rated at 75W. How much current flows through each bulb and what is the total current? (6 mark) 13. Calculate mesh currents for the circuit given below (12 mark) 14. Calculate nodal voltages for the circuit shown below, (12 mark) 15. Find the equivalent resistance of the circuit shown above (6 mark)