Electrical Engineering · Question Bank

Network Laws & Theorems

9 questions. Answer in your head first, then check the solution.

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#1📜 EE Pre-Board August 2014📘 PowerhouseEasy

For open circuited condition of Thevenin’s theorem, all sources of emf in the network are replaced by

Atheir internal impendance

Btheir internal resistance

Cas a total a big source of emf

Dtheir internal reactance

#2📜 EE Pre-Board March 2015📘 PowerhouseEasy

If an electrical network having one or more than one voltage source, is transformed into equivalent electrical network with a single voltage source (which is short circuit current of previous circuit) with parallel internal resistance of the network with all current source replaced by their internal resistance. The above illustration is called

AThevenin’s theorem

BReciprocity theorem

CNorton’s theorem

DSuperposition theorem

#3📜 EE Pre-Board March 2015📘 PowerhouseEasy

Which of the following is an active element of a circuit?

AIdeal current source

BResistance

CInductance

DCapacitive

#4📜 EE Pre-Board March 2017📘 PowerhouseEasy

If an electrical network having one or more than one voltage source is transformed into equivalent electrical network with a single current source (which is the circuit current of previous circuit) with parallel internal resistance of the network with all current source replaced by their internal resistance; the above illustration is called

AThevenin’s theorem

BNorton’s theorem

CReciprocity theorem

DSuperposition theorem

#5📘 EE Pocket Reviewer RojasEasy

Which of the following is true about Kirchhoff’s current law?

ATotal sum of currents meeting at a junction in a network is zero

BNo current can leave a junction without some. currents entering

CAlgebraic sum of the currents meeting at a junction in a network is zero

DNo current can enter a junction in a network

#6📘 EE Pocket Reviewer RojasEasy

Superposition theorem can be applied only to circuits having what type of elements?

APassive

BNon-linear

CResistive

DLinear-bilateral

#7📘 EE Pocket Reviewer RojasEasy

What type of an equivalent circuit does Thevenin’s theorem have?

ACurrent form

BDelta form

CVoltage form

DWye form

#8📘 EE Pocket Reviewer RojasEasy

According to KVL, the algebraic sum of all the IR drops and emf's in any closed loop of a network is always

AZero

BPositive

CNegative

DDetermined by battery emfs

#9📘 EE Pocket Reviewer RojasEasy

Which one is true about the Maxwell’s loop current method of solving electrical networks?

AIt uses the branch currents

BIt is a network reduction method

CIt utilizes Kirchhoff's voltage law

DIt is confined to single loop circuits

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