Lecture 2.pptx
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The document contains questions and circuit diagrams related to basic circuit analysis techniques like Ohm's law, Kirchhoff's laws, mesh analysis, nodal analysis, and source transformation. It asks the reader to use these techniques to solve for unknown voltages, currents, resistances and other circuit parameters in various DC circuits.
Lecture 2.pptx
- 4. What is the value of the unknown resistor R in Fig. 1.16 if the voltage drop across the 500 ohm resistor is 2.5 volts ? All resistances are in ohm.
- 5. Q. Calculate the effective resistance of the following combination of resistances and the voltage drop across each resistance when a P.D. of 60 V is applied between points A and B.
- 10. It may be noted that if a voltmeter is connected across the open bulb, it will read full supply voltage of 220 V.
- 13. Q. A resistance of 10 ohm is connected in series with two resistances each of 15 ohm arranged in parallel. What resistance must be shunted across this parallel combination so that the total current taken shall be 1.5 A with 20 V applied ?
- 15. Find the equivalent resistance of the circuit given in Fig. between the following points (i) A and B (ii) C and D (iii) E and F (iv) A and F and (v) A and C. Numbers represent resistances in ohm.
- 16. Using the current-divider rule, find the ratio IL/IS in the circuit shown in Fig.
- 17. An ohmeter is used for measuring the resistance of a circuit between its two terminals. What would be the reading of such an instrument used for the circuit of Fig. below at point (a) AB (b) AC and (c) BC ? All resistances are in ohm.
- 18. Find the current and power supplied by the battery to the circuit of Fig. (i) under normal conditions and (ii) when a ‘short’ occurs across terminals A and B. All resistances are in kilo-ohm.
- 19. Prove that the output voltage V0 in the circuit of Fig. is V/13.
- 20. DC Sources
- 24. Using Kirchhoff’s Current Law and Ohm’s Law, find the magnitude and polarity of voltage V in Fig. Directions of the two current sources are as shown.
- 25. Find VCE AND VAG VCE = (- 5 × 2) + (10) - (5 × 1) = - 5V The negative sign shows that point C is negative with respect to point E. VAG = (7 × 2) + (10) + (6 × 1) = 30 V. The positive sign shows that point A is at a positive potential of 30 V with respect to point G.
- 26. Maxwell’s Loop Current Method (Mesh Analysis)
- 27. Solve using mesh analysis and find I3 I3= 0.823 A
- 28. Determine the current supplied by each battery in the circuit shown
- 29. Q. Find the current through the 3 ohm resistance connected between C and D Fig
- 30. Nodal Analysis
- 33. Q. Using Node voltage method, find the current in the 3 ohm resistance for the network shown in Fig
- 34. Find the branch currents in the circuit of Fig. by using (i) nodal analysis and (ii) loop analysis.
- 36. Nodal Analysis with current sources
- 37. Use nodal analysis method to find currents in the various resistors of the circuit shown in Fig.