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network theorems MCQs

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

network theorems Mcqs
1. In Thevenins theorem, to find Z
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A. all independent voltage and current sources are short circuited

B. all independent voltage sources are short circuited and all independent current sources are open circuited

C. all independent voltage sources are open circuited and all independent current sources are short circuited

D. all independent current sources are short circuited and independent voltage sources are open circuited

2. A closed path made by several branches of the network is known as____________?
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A. branch

B. junction

C. loop

D. circuit

3. A capacitor is generally a____________?
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A. linear and bilateral component

B. bilateral and active component

C. non-linear and active component

D. active, passive, linear and nonlinear component

4. If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be___________?
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A. a voltage source

B. a current source

C. both of above

D. none of the above

5. Which of the following is a bilateral element?
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A. Constant current source

B. Capacitance

C. None of the above

D. Constant voltage source

6. The circuit whose properties are same in either direction is known as__________?
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A. reversible circuit

B. unilateral circuit

C. irreversible circuit

D. bilateral circuit
7. Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen from the terminals of the load. The above statement is associated with____________?
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A. Thevenins theorem

B. Maximum power transfer theorem

C. Millmans theorem

D. Superposition theorem

8. A non-linear network does not satisfy__________?
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A. superposition condition

B. homogeneity condition

C. both homogeneity as well as superposition condition

D. homogeneity, superposition and associative condition

9. Kirchhoff s current law states that
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A. total sum of currents meeting at the junction is zero

B. net current flow at the junction is positive

C. no current can leave the junction without some current entering it.

D. Hebraic sum of the currents meeting at the junction is zero
10. In a series parallel circuit, any two resistances in the same current path must be in___________?
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A. parallel with each other

B. series with the voltage source

C. parallel with the voltage source

D. series with each other
11. Application of Nortons theorem to a circuit yields:________________?
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A. equivalent current source and impedance in parallel

B. equivalent current source and impedance in series

C. equivalent impedance

D. equivalent current source

12. An ideal voltage source has__________?
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A. terminal voltage in proportion to current

B. zero internal resistance

C. open circuit voltage equal to the voltage on full load

D. terminal voltage in proportion to load

13. Kirchhoff s voltage law applies to circuits with____________?
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A. linear, non-linear, active and passive elements

B. linear elements only

C. nonlinear elements only

D. linear, non-linear, active, passive, time varying as wells as time-in-variant elements
14. Choose the incorrect statement: A branch formed by the parallel connection
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A. A branch formed by the parallel connection of any resistor R and open circuit has the characteristic of an open circuit.

B. A branch formed by the series connection of any resistor R and an open circuit has the characteristic of an open circuit.

C. A branch formed by the series connection of any resistor R and a short circuit has the characteristic of resistor R.

D. A branch formed by the parallel connection of any resistor R and a short circuit has the characteristic of a short circuit.

15. If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is____________?
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A. 30 Q

B. 40 Q

C. 20 Q

D. 10 Q

16. According to Kirchhoffs voltage law, the algebraic sum of all IR drops and e.m.fs. in any closed loop of a network is always____________?
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A. zero

B. determined by battery e.m.fs.

C. negative

D. positive

17. Kirchhoff s law is applicable to____________?
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A. passive networks only

B. a.c. circuits only

C. d.c. circuits only

D. both a.c. as well d.c. circuits
18. An ideal voltage source should have______________?
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A. small value of e.m.f.

B. zero source resistance

C. infinite source resistance

D. large value of e.m.f.

19. For high efficiency of transfer of power, internal resistance of the source should be____________?
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A. less than the load resistance

B. more than the load resistance

C. none of the above

D. equal to the load resistance

20. Between the branch voltages of a loop the Kirchhoff s voltage law imposes_____________?
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A. none of the above

B. linear constraints

C. non-linear constraints

D. no constraints