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Chapter 2 . 2. D.C. NETWORK THEOREMS. MCQs

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1. . Kirchhoff’s first law is also called:





2. . Kirchhoff’s second law is also called:





3. . Kirchhoff’s current law applies only:





4. . Kirchhoff’s voltage law applies only:





5. . According to KCL:





6. . In any electric network, the current coming towards a point is equal to the outgoing current from that point is called:





7. . According to Kirchhoff's law in any closed circuit, the sum of IR drops and EMF is:





8. . The resistive drop in a mesh due to current flowing in a clockwise direction must be taken as:





9. . The resistive drop in a mesh due to current flowing in an anti-clockwise direction must be taken:





10. . Single closed path of an electric network is called:





11. . Such junction or point in a circuit where two or more circuit elements are connected:





12. . That part of a network, which lies between two junctions, is called:





13. . The circuit having energy sources is called:





14. . Ideal voltage source should have:





15. . In the superposition theorem, when we consider the effect of one voltage source, all the other voltage sources are:





16. . In the superposition theorem, when we consider the effect of one voltage source, all the other current sources are:





17. . In the superposition theorem, when we consider the effect of one current source, all the other current sources are:





18. . Superposition theorem is not applicable:





19. . The concept on which the superposition theorem is based is:





20. . Which of the following theorem is applicable for both linear and non-linear circuits?





21. . For maximum transfer of power, the internal resistance of the source should be:





22. . Does maximum power transfer imply maximum efficiency?





23. . Efficiency of power transfer when the maximum transfer of power occurs is:





24. . The amount of energy supplied by the current in unit time is called:





25. . The maximum power is delivered to a circuit when source resistance is ________ load resistance:





26. . Does maximum power transfer imply maximum efficiency?





27. . Under the condition of maximum power, efficiency is:





28. . The Thevenin’s voltage is the:





29. . Thevenin’s resistance is found by:





30. . Thevenin’s theorem is true:





31. . In Thevenin’s theorem, Vth is:





32. . Vth is found across the _________ terminals of the network:





33. . Which of the following is also known as the dual of Thevenin’s theorem?





34. . Which of the following is the right expression for converting from delta to star?





35. . Rab is the resistance between terminals A and B, Rbc between B and C, and Rca between C and A. These 3 resistors are connected in delta connection. After transforming to star, the resistance at A will be:





36. . Resistance at B after delta to star transformation:





37. . Resistance at C after delta to star transformation:





38. . Correct expression for star-delta conversion:





39. . Ra is resistance at A, Rb at B, Rc at C in star connection. After transforming to delta, resistance between A and C is:





40. . Resistance between A and B after star to delta:





41. . Resistance between B and C after star to delta:





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