network theorems MCQs – Page 2

Practise focused network theorems questions with marked answers for exam preparation and subject revision.

network theorems Mcqs
21. While calculating Rth in Thevenins theorem and Norton equivalent
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A. only voltage sources are made dead

B. all voltage and current sources are made dead

C. only current sources are made dead

D. all independent sources are made dead
22. For a voltage source:
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A. None

B. terminal voltage is always lower than source e.m.f.

C. terminal voltage cannot be higher than source e.m.f.

D. the source e.m.f. and terminal voltage are equal

23. The superposition theorem requires as many circuits to be solved as there are____________?
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A. sources, nodes and meshes

B. sources and nodes

C. sources

D. nodes

24. The superposition theorem is applicable to____________?
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A. linear responses only

B. none of the above

C. linear, non-linear and time variant responses

D. linear and non-linear resistors only

25. In any linear bilateral network, if a source of e.m.f. E in any branch produces a current I in any other branch, then same e.m.f. acting in the second branch would produce the same current / in the first branch.
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A. above statement is associated with

B. compensation theorem

C. reciprocity theorem

D. none of the above

E. superposition theorem

26. A linear resistor having 0 < R < o is a______________?
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A. current controlled resistor

B. voltage controlled resistor

C. both current controlled and voltage controlled resistor

D. none of the above

27. A terminal where three on more branches meet is known as______________?
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A. combination

B. anode

C. node

D. terminus

28. Kirchhoff s law is not applicable to circuits with____________?
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A. lumped parameters

B. distributed parameters

C. passive elements

D. non-linear resistances

29. The concept on which Superposition theorem is based on_____________?
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A. duality

B. non-linearity

C. reciprocity

D. linearity
30. Which of the following is non-linear circuit parameter?
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A. Wire wound resistor

B. Transistor

C. Condenser

D. Inductance

31. The number of independent equations to solve a network is equal to_____________?
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A. the number of chords

B. the number of branches

C. sum of number of branches, chords and nodes

D. sum of the number of branches and chords

32. Millmans theorem yields____________?
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A. equivalent impedance

B. equivalent voltage source

C. equivalent resistance

D. equivalent voltage or current source
33. Which of the following is the passive element?
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A. Capacitance

B. Ideal voltage source

C. Ideal current source

D. All of the above

34. A network which contains one or more than one source of e.m.f. is known as___________?
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A. linear network

B. passive network

C. non-linear network

D. active network
35. A passive network is one which contains____________?
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A. no source of e.m.f. in it

B. only some sources of e.m.f. in it

C. only variable resistances

D. only two sources of e.m.f. in it

36. Efficiency of power transfer when maximum transfer of power c xerosis
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A. 75%

B. 50%

C. 100%

D. 80%

37. For maximum transfer of power, internal resistance of the source should be_____________?
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A. none of the above

B. equal to load resistance

C. less than the load resistance

D. greater than the load resistance

38. Thevenin resistance Rth is found
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A. by short-circuiting the given two terminals

B. by removing voltage sources along with their internal resistances

C. between same open terminals as for Etk

D. between any two open terminals

39. In any network containing more than one sources of e.m.f. the current in any branch is the algebraic sum of a number of individual fictitious currents (the number being equal to the number of sources of e.m.f.), each of which is due to separate action of each source of e.m.f., taken in order, when the remaining sources of e.m.f. are replaced by conductors, the resistances of which are equal to the internal resistances of the respective sources. The above statement is associated with:
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A. Nortons theorem

B. Superposition theorem

C. Thevenins theorem

D. None of the above

40. Kirchhoffs current law is applicable to only
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A. electric circuits

B. electronic circuits

C. closed loops in a network

D. junction in a network