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Network Theorems

Study 47 Electrical Engineering MCQs with correct answers and explanations.

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11Electrical EngineeringMedium

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

Aboth of above

Bnone of the above

Ca current source

Da voltage source

Correct answer

D. a voltage source

Explanation

The correct answer is a voltage source.

12Electrical EngineeringMedium

The circuit whose properties are same in either direction is known as________?

Airreversible circuit

Breversible circuit

Cbilateral circuit

Dunilateral circuit

Correct answer

C. bilateral circuit

Explanation

The correct answer is bilateral circuit.

13Electrical EngineeringMedium

Which of the following is non-linear circuit parameter?

ACondenser

BTransistor

CInductance

DWire wound resistor

Correct answer

B. Transistor

Explanation

The correct answer is Transistor.

14Electrical EngineeringMedium

“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:

ANorton’s theorem

BThevenin’s theorem

CSuperposition theorem

DNone of the above

Correct answer

C. Superposition theorem

Explanation

The correct answer is Superposition theorem.

15Electrical EngineeringMedium

A terminal where three on more branches meet is known as________?

Anode

Banode

Ccombination

Dterminus

Correct answer

A. node

Explanation

The correct answer is node.

16Electrical EngineeringMedium

Kirchhoff s current law states that

Atotal sum of currents meeting at the junction is zero

BHebraic sum of the currents meeting at the junction is zero

Cno current can leave the junction without some current entering it.

Dnet current flow at the junction is positive

Correct answer

B. Hebraic sum of the currents meeting at the junction is zero

Explanation

The correct answer is Hebraic sum of the currents meeting at the junction is zero.

17Electrical EngineeringMedium

“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________?

AMaximum power transfer theorem

BSuperposition theorem

CThevenin’s theorem

DMillman’s theorem

Correct answer

A. Maximum power transfer theorem

Explanation

The correct answer is Maximum power transfer theorem.

18Electrical EngineeringMedium

For maximum transfer of power, internal resistance of the source should be________?

Aless than the load resistance

Bgreater than the load resistance

Cnone of the above

Dequal to load resistance

Correct answer

D. equal to load resistance

Explanation

The correct answer is equal to load resistance.

19Electrical EngineeringMedium

The resistance LM will be________?

A18Q

B12 Q

C20Q

D6.66 Q

Correct answer

D. 6.66 Q

Explanation

The correct answer is 6.66 Q.

20Electrical EngineeringMedium

“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”.

Areciprocity theorem

Bnone of the above

Csuperposition theorem

Dcompensation theorem

Correct answer

A. reciprocity theorem

Explanation

The correct answer is reciprocity theorem.

Kirchhoff s current law states that

Atotal sum of currents meeting at the junction is zero

BHebraic sum of the currents meeting at the junction is zero

Cno current can leave the junction without some current entering it.

Dnet current flow at the junction is positive

Correct answer

B. Hebraic sum of the currents meeting at the junction is zero

Explanation

The correct answer is Hebraic sum of the currents meeting at the junction is zero.