Kirchhoff s current law states that

Hebraic sum of the currents meeting at the junction is zero

net current flow at the junction is positive

Hebraic sum of the currents meeting at the junction is zero

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

total sum of currents meeting at the junction is zero

Thevenin resistance Rth is found

between same open terminals as for Etk

by removing voltage sources along with their internal resistances

by short-circuiting the given two terminals

between any two ‘open’ terminals

between same open terminals as for Etk

To determine the polarity of the voltage drop across a resistor, it is necessary to know

direction of current through the resistor

value of current through the resistor

direction of current through the resistor

A capacitor is generally a

active, passive, linear and nonlinear component

non-linear and active component

Kirchhoff s law is applicable to

both a.c. as well d.c. circuits

Kirchhoff s voltage law applies to circuits with

linear, non-linear, active, passive, time varying as wells as time-in-variant elements

linear, non-linear, active and passive elements

linear, non-linear, active, passive, time varying as wells as time-in-variant elements

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

greater than the load resistance

In a series parallel circuit, any two resistances in the same current path must be in

series with the voltage source.’

parallel with the voltage source

A non-linear network does not satisfy

both homogeneity as well as superposition condition

homogeneity, superposition and associative condition

An ideal voltage source has

open circuit voltage equal to the voltage on full load

terminal voltage in proportion to current

terminal voltage in proportion to load

The superposition theorem is applicable to

linear, non-linear and time variant responses

linear and non-linear resistors only

Application of Norton’s theorem to a circuit yields

equivalent current source and impedance in series

equivalent current source and impedance in parallel

A passive network is one which contains

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

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

A linear resistor having 0 < R < °o is a

both current controlled and voltage controlled resistor

In Thevenin’s theorem, to find Z

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

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

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

all independent voltage and current sources are short circuited

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

While calculating Rth in Thevenin’s theorem and Norton equivalent

all independent sources are made dead

only current sources are made dead

only voltage sources are made dead

all voltage and current sources are made dead

The number of independent equations to solve a network is equal to

sum of the number of branches and chords

sum of number of branches, chords and nodes

Choose the incorrect statement.

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

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

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

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

Network Theorems Electrical Engineering MCQ Questions and Answers PDF Quiz

15.

“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

Thevenin’s theorem

Norton’s theorem

Superposition theorem

None of the above

1. Kirchhoff s current law states that

2. 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

3. Kirchhoffs current law is applicable to only

4. Kirchhoffs voltage law is related to

5. Superposition theorem can be applied only to circuits having

6. The concept on which Superposition theorem is based is

7. Thevenin resistance Rth is found

8. An ideal voltage source should have

9. To determine the polarity of the voltage drop across a resistor, it is necessary to know

10. “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

11. “Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances”. The above statement is associated with

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

13. Which of the following is non-linear circuit parameter ?

14. A capacitor is generally a

16. Kirchhoff s law is applicable to

17. Kirchhoff s law is not applicable to circuits with

18. Kirchhoff s voltage law applies to circuits with

19. The resistance LM will be

20. For high efficiency of transfer of power, internal resistance of the source should be

21. Efficiency of power transfer when maximum transfer of power c xerosis

22. If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is

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

24. If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be

25. The circuit whose properties are same in either direction is known as

26. In a series parallel circuit, any two resistances in the same current path must be in

27. The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as

28. A non-linear network does not satisfy

29. An ideal voltage source has

30. A network which contains one or more than one source of e.m.f. is known as

31. The superposition theorem is applicable to

32. Application of Norton’s theorem to a circuit yields

33. The superposition theorem is applicable to

34. Between the branch voltages of a loop the Kirchhoff s voltage law imposes

35. A passive network is one which contains

36. A terminal where three on more branches meet is known as

37. Which of the following is the passive element ?

38. Which of the following is a bilateral element ?

39. A closed path made by several branches of the network is known as

40. A linear resistor having 0 < R < °o is a

41. A star circuit has element of resistance R/2. The equivalent delta elements will be

42. A delta circuit has each element of value R/2. The equivalent elements of star circuit with be

43. In Thevenin’s theorem, to find Z

44. While calculating Rth in Thevenin’s theorem and Norton equivalent

45. The number of independent equations to solve a network is equal to

46. The superposition theorem requires as many circuits to be solved as there are

47. Choose the incorrect statement.

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1.

Kirchhoff s current law states that

2.

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

3.

Kirchhoffs current law is applicable to only

4.

Kirchhoffs voltage law is related to

5.

Superposition theorem can be applied only to circuits having

6.

The concept on which Superposition theorem is based is

7.

Thevenin resistance Rth is found

8.

An ideal voltage source should have

9.

To determine the polarity of the voltage drop across a resistor, it is necessary to know

10.

“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

11.

“Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances”. The above statement is associated with

12.

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

13.

Which of the following is non-linear circuit parameter ?

14.

A capacitor is generally a

16.

Kirchhoff s law is applicable to

17.

Kirchhoff s law is not applicable to circuits with

18.

Kirchhoff s voltage law applies to circuits with

19.

The resistance LM will be

20.

For high efficiency of transfer of power, internal resistance of the source should be

21.

Efficiency of power transfer when maximum transfer of power c xerosis

22.

If resistance across LM in Fig. 2.30 is 15 ohms, the value of R is

23.

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

24.

If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be

25.

The circuit whose properties are same in either direction is known as

26.

In a series parallel circuit, any two resistances in the same current path must be in

27.

The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as

28.

A non-linear network does not satisfy

29.

An ideal voltage source has

30.

A network which contains one or more than one source of e.m.f. is known as

31.

The superposition theorem is applicable to

32.

Application of Norton’s theorem to a circuit yields

33.

The superposition theorem is applicable to

34.

Between the branch voltages of a loop the Kirchhoff s voltage law imposes

35.

A passive network is one which contains

36.

A terminal where three on more branches meet is known as

37.

Which of the following is the passive element ?

38.

Which of the following is a bilateral element ?

39.

A closed path made by several branches of the network is known as

40.

A linear resistor having 0 < R < °o is a

41.

A star circuit has element of resistance R/2. The equivalent delta elements will be

42.

A delta circuit has each element of value R/2. The equivalent elements of star circuit with be

43.

In Thevenin’s theorem, to find Z

44.

While calculating Rth in Thevenin’s theorem and Norton equivalent

45.

The number of independent equations to solve a network is equal to

46.

The superposition theorem requires as many circuits to be solved as there are

47.

Choose the incorrect statement.