This is the Multiple Choice Questions Part 12 of the Series in DC Circuits as one of the Electrical Engineering topic. In Preparation for the REE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electrical Engineering field, Electrical Engineering Books, Journals and other Electrical Engineering References.

#### Continue Practice Exam Test Questions Part 12 of the Series

NETWORK THEOREMS

**Choose the letter of the best answer in each questions.**

โ MCQ in DC Circuits Part 11 | REE Board Exam

551.ย Find the total resistance R_{in} is in the circuit shown.

A.ย 1 + โ3

B.ย ย (1 – โ5)/3

C.ย ย (-1 + โ5)/2

D.ย none of these

Answer: **Option A**

Solution:

552.ย What is the value of i_{1}?

A.ย 0

B.ย โ6

C.ย 6

D.ย none of these

Answer: **Option B**

Solution:

553.ย Find I_{x} in the circuit shown.

A.ย 3A

B.ย โ3 A

C.ย 0

D.ย none of these

Answer: **Option A**

Solution:

554.ย Find value of R in the given circuit.

A.ย 8.2 โฆ

B.ย 6 โฆ

C.ย 10 โฆ

D.ย none of these

Answer: **Option A**

Solution:

555.ย The voltage V in the figureย always equal to

A.ย 9 V

B.ย 5 V

C.ย 1 V

D.ย none of these

Answer: **Option D**

Solution:

556.ย Find V in the circuit shown.

A.ย 2 V

B.ย 3 V

C.ย 1 V

D.ย none of these

Answer: **Option A**

Solution:

557.ย Find V in the circuit shown.

A.ย โ 3 V

B.ย +3 V

C.ย 2 V

D.ย none of these

Answer: **Option A**

Solution:

558.ย Find V in the circuit shown.

A.ย + 3 V

B.ย โ 3 V

C.ย 2 V

D.ย none of these

Answer: **Option B**

Solution:

559.ย Determine V_{X} of this circuit

A.ย 42.2 V

B.ย 83.3 V

C.ย 97.3ย ย V

D.ย 103ย V

Answer: **Option B**

Solution:

560.ย Find voltage e_{o} in the fig shown.

A.ย 2 V

B.ย 4/3 V

C.ย 4 V

D.ย 8 V

Answer: **Option C**

Solution:

561.ย Find V_{X} in the circuit shown

A.ย 2.5 V

B.ย -2.5 V

C.ย 0 V

D.ย 10 V

Answer: **Option C**

Solution:

562.ย Find voltage e_{o} in the fig shown

A.ย 48 V

B.ย 24 V

C.ย 36 V

D.ย 28 V

Answer: **Option D**

Solution:

563.ย The voltage v(t) is

A.ย e^{at} โ e^{-bt}

B.ย e^{at} + e^{bt}

C.ย ae^{at }โ be^{bt}

D.ย ae^{at} + be^{bt}

Answer: **Option D**

Solution:

564.ย Find current through 5 โฆ resistor

A.ย 0

B.ย 2 A

C.ย 3 A

D.ย 7 A

Answer: **Option B**

Solution:

565.ย Find V_{xy}

A.ย 10 V

B.ย 46 V

C.ย 13 V

D.ย 58 V

Answer: **Option B**

Solution:

566.ย What is V_{AB}?

A.ย 3V

B.ย 54V

C.ย 24 V

D.ย none of these

Answer: **Option C**

Solution:

567.ย What is V_{xy}?

A.ย 20 V

B.ย 30 V

C.ย โ10 V

D.ย 10 V

Answer: **Option C**

Solution:

568.ย Inย theย circuitย ofย theย givenย figure.ย Theย valueย ofย the voltage source E is

A.ย โ16 V

B.ย 4 V

C.ย โ6 V

D.ย 16 V

Answer: **Option A**

Solution:

569.ย Find i_{2} in the figure shown.

A.ย 4 A

B.ย 2/3 A

C.ย -2/3 A

D.ย none of these

Answer: **Option B**

Solution:

570.ย When a resistor R is connected to a current source, it consumes a power of 18 W. When the same R is connectedย toย aย voltageย sourceย havingย same magnitudeย asย theย currentย source,ย theย power absorbedย byย Rย isย 4.5ย W.ย Theย magnitudeย ofย the current source & value of R are

A.ย โ18ย A & 1 ohm

B.ย 3 A & 2 ohms

C.ย 1 A & 18 ohms

D.ย 6 A & 0.5 ohms

Answer: **Option B**

Solution:

571.ย In the circuit shown in the figure. If I = 2, then the value of the battery voltage V will be

A.ย 5 V

B.ย 3 V

C.ย 2 V

D.ย 1 V

Answer: **Option C**

Solution:

572.ย Find E and I in the figure shown.

A.ย I = 13 A and E = 31 V

B.ย I = 31 A and E = 13V

C.ย E = 31 V and I = 31A

D.ย none of these

Answer: **Option A**

Solution:

573.ย Find the voltage across the terminals a and b.

A.ย 0.5 V

B.ย 3.0 V

C.ย 3.5 V

D.ย 4.0 V

Answer: **Option C**

Solution:

574.ย Whatย isย theย currentย suppliedย byย 1ย Vย sourceย when each resistance is 1 ohm?

A.ย 8/15 A

B.ย 15/4 A

C.ย 4/15ย ย A

D.ย none of these

Answer: **Option A**

Solution:

575.ย The voltage V is equal to

A.ย 3 V

B.ย โ3 V

C.ย 5 V

D.ย none of these

Answer: **Option A**

Solution:

576.ย The voltage across 15 ohms resistor is

A.ย -105 V

B.ย +105 V

C.ย โ15 V

D.ย + 15 V

Answer: **Option A**

Solution:

577.ย In the circuit of the given figure. The current I will be

A.ย 1 A

B.ย 2 A

C.ย 4 A

D.ย 8 A

Answer: **Option B**

Solution:

578.ย In the circuit shown inย the givenย figure, the potential difference V_{2} โ V_{1} is

A.ย โ4.5 V

B.ย 0

C.ย 4.5 V

D.ย 6 V

Answer: **Option C**

Solution:

579.ย Find V in the figure shown.

A.ย 56.25 V

B.ย 85 V

C.ย 40 V

D.ย none of these

Answer: **Option A**

Solution:

580.ย What is V_{A}?

A.ย -2 V

B.ย 2 V

C.ย ย -4 V

D.ย 4 V

Answer: **Option A**

Solution:

581.ย What is the value of I4 in the fig shown?

A.ย โ4 A

B.ย โ2 A

C.ย known only if V_{1}, V_{2} and R are known

D.ย known only if V_{1}, V_{2} are known

Answer: **Option A**

Solution:

582.ย If the voltage of each source in the given network is doubled,ย thenย whichย ofย theย followingย statement would be true?

1.ย Current flowing in the network will be doubled

2.ย Voltages across each resistor will be doubled

3.ย Powerย absorbedย byย eachย resistorย willย be doubled

4.ย Powerย deliveredย byย eachย sourceย willย be doubled

A.ย 1, 2, 3, 4

B.ย 1, 2

C.ย 2, 3

D.ย 1, 3, 4

Answer: **Option B**

Solution:

583.ย Forย aย givenย network,ย theย numberย ofย independent meshย equationย (Nm)ย andย theย numberย of independent node equation (Nn) obey the following:

A.ย Nm = Nn

B.ย Nm > Nn

C.ย Nm < Nn

D.ย anyย oneย ofย theย above,ย dependingย onย the network

Answer: **Option D**

Solution:

584.ย In the circuit ofย the givenย figure. What is the current I?

A.ย 1 A

B.ย 4/3 A

C.ย 2 A

D.ย 3 A

Answer: **Option A**

Solution:

585.ย Find the value of R for which the power supplied by the voltage source is zero.

A.ย 0

B.ย 1.5 ohms

C.ย 6 ohms

D.ย 0.667 ohms

Answer: **Option B**

Solution:

586.ย Whatย valueย ofย Rย whichย ensuresย thatย theย current through the 60 ohm resistor of this circuit is 1 A?

A.ย 5 ohms

B.ย 10 ohms

C.ย 15 ohms

D.ย 20 ohms

Answer: **Option B**

Solution:

587.ย The current I in the circuit of the figure is

A.ย 2 A

B.ย 1.5 A

C.ย 0.5 A

D.ย 0 A

Answer: **Option B**

Solution:

588.ย In the circuit shown in the given figure, current I is

A.ย โ2/5

B.ย 24/5

C.ย 18/5

D.ย 2/5

Answer: **Option A**

Solution:

589.ย Aย 35ย Vย sourceย isย connectedย toย aย seriesย circuitย of 600โฆย andย Rย asย shown.ย Ifย aย voltmeterย ofย internal resistance1.2ย kโฆย isย connectedย acrossย 600ย โฆ resistor it reads 5 V, find the value of R.

A.ย 1.2 kฮฉ

B.ย 2.4 kโฆ

C.ย 3.6 kโฆ

D.ย 7.2 kโฆ

Answer: **Option B**

Solution:

590.ย Find the current in R_{L} in the circuit below.

A.ย 0

B.ย 2/3

C.ย 1/3

D.ย none

Answer: **Option C**

Solution:

591.ย Theย currentย flowingย throughย theย voltageย sourceย in the given circuit is

A.ย 1.0 A

B.ย 0.75 A

C.ย 0.5 A

D.ย 0.25 A

Answer: **Option A**

Solution:

592.ย In the circuit shown, the voltage across 2 โฆ resistor isย 20ย V.ย Theย 5ย โฆย resistorย connectedย betweenย the terminals A and B can be replaced by an ideal

A.ย Voltageย sourceย ofย 25 Vย withย +veย terminal upward

B.ย Voltageย sourceย ofย 25 Vย withย +veย terminal downward

C.ย Current source of 2 A upward

D.ย Current source of 2 A downward

Answer: **Option A**

Solution:

593.ย Inย theย circuitย shownย inย theย figure.ย Theย effective resistance faced by the voltage source is

A.ย 1 โฆ

B.ย 2 โฆ

C.ย 3 โฆ

D.ย 3.3 โฆ

Answer: **Option C**

Solution:

594.ย Ifย aย resistanceย โRโย ofย 1โฆย isย connectedย acrossย the terminalsย ABย asย shownย inย theย givenย fig.ย Thenย the current flowing through R will be

A.ย 1 A

B.ย 0.5 A

C.ย 0.25 A

D.ย 0.125 A

Answer: **Option C**

Solution:

595.ย Find V_{L} across the ยผ ohm resistor of this circuit.

A.ย 1/52 V

B.ย 2/52 V

C.ย 3/52 V

D.ย 5/52ย V

Answer: **Option C**

Solution:

596.ย Find I_{x} in the fig shown

A.ย 1 A

B.ย โ2 A

C.ย 2 A

D.ย none of these

Answer: **Option B**

Solution:

597.ย Aย particularย resistorย Rย dissipatesย aย powerย ofย 4 W whenย Vย aloneย isย active.ย Theย sameย resistorย R dissipates a power of 9 watts when I alone is active. The power dissipated by R when both sources are active will be

A.ย 1 W

B.ย 5 W

C.ย 13 W

D.ย 25 W

Answer: **Option D**

Solution:

598.ย The linear network contains only resistors if i_{s1} = 8 A, i_{s2} = 12 A, V_{x} is found to be 80 v. If i_{s1} = -8 A, i_{s2} = 4 A, V_{x} = 0 . Find V_{x} when i_{s1} = i_{s2} = 20 A.

A.ย โ150

B.ย 150

C.ย 100

D.ย 50

Answer: **Option B**

Solution:

599.ย When Rย =ย 10ย ohms,ย V_{R}ย =ย 20ย V, when Rย =ย 20 ohms _{VR} = 30 V. Find V_{R} when R = 80 ohms.

A.ย 40

B.ย 160

C.ย 48

D.ย none

Answer: **Option C**

Solution:

600.ย Find V_{1} & V_{2}.

A.ย 4 V, 8 V

B.ย 8 V, 4 V

C.ย 6 V, 6 V

D.ย 12 V, 12 V

Answer: **Option A**

Solution:

#### Questions and Answers in DC Circuits

Following is the list of practice exam test questions in this brand new series:

**MCQ in DC Circuits**

**MCQ from Number 1 โ 50**Answer key:

**included**

**MCQ from Number 51 โ 100**Answer key:

**included**

**MCQ from Number 101 โ 150**Answer key:

**included**

**MCQ from Number 151 โ 200**Answer key:

**included**

**MCQ from Number 201 โ 250**Answer key:

**included**

**MCQ from Number 251 โ 300**Answer key:

**included**

**MCQ from Number 301 โ 350**Answer key:

**included**

**MCQ from Number 351 โ 400**Answer key:

**included**

**MCQ from Number 401 โ 450**Answer key:

**included**

**MCQ from Number 451 โ 500**Answer key:

**included**

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