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When analyzing an electrical circuit using mesh and node analysis, which method is primarily used to analyze voltage relationships in the circuit?

A. Mesh analysis

B. Node analysis

C. Ohm's law

D. Kirchhoff's voltage law

ANSWER: B. Node analysis

"A series circuit at resonance would mean, the circuit is

A. Resistive

B. Inductive

C. Capacitive

D. Reactive

A. Resistive

In a purely resistive network, what is the phase angle between the current and voltage?

A. 0 degrees

B. 45 degrees

C. 90 degrees

D. 180 degrees

A. 0 degrees

In a series resistive network, which statement is true?

A. The total resistance is equal to the sum of individual resistances.

B. The total resistance is always less than the smallest individual resistance.

C. The total resistance is always greater than the smallest individual resistance.

D. The total resistance is independent of the individual resistances.

A. The total resistance is equal to the sum of individual resistances.

If you have two resistors in series with resistance values of 10 ohms and 20 ohms, what is the equivalent resistance?

A. 20 ohms

B. 10 ohms

C. 5 ohms

D. 30 ohms

D. 30 ohms

In a parallel circuit with three resistors, R1, R2, and R3, each having different resistance values, which of the following statements is true regarding the total resistance of the circuit?

A. The total resistance is always equal to the resistance of R1.

B. The total resistance is equal to the sum of the reciprocals of the individual resistances (1/R1 + 1/R2 + 1/R3).

C. The total resistance is always equal to the resistance of R2.

D. The total resistance is equal to the product of the individual resistances (R1 R2 R3).

ANSWER: B. The total resistance is equal to the sum of the reciprocals of the individual resistances (1/R1 + 1/R2 + 1/R3).

In a resistive network composed of two resistors connected in series, with resistor R1 having a resistance of 10 ohms and resistor R2 having a resistance of 20 ohms, what is the total resistance of the network?

A. 5 ohms

B. 10 ohms

C. 15 ohms

D. 30 ohms

ANSWER: D. 30 ohms

Conventional flow assumes charges flow from

A. positive to negative

B. positive to positive

C. negative to positive

D. negative to negative

ANSWER: A. positive to positive

What happens to the total resistance parallel resistive network when you add more resistors?

A. the total resistance increases

B. the total resistance decreases

C. the total resistance remains the same

D. it depends on the values of the added resistors

A. the total resistance increases

A resistive network is connected to a D.C. source of 16V. The power consumed by the network is 4 Watt. The value of R is:

A. 8 ohms

B. 16 ohms

C. 1 ohms

D. 6 ohms

ANSWER: A. 8 ohms

What is the primary purpose of using resistive networks in electronic circuits?

A. To amplify signals.

B. To store electrical energy.

C. To control the flow of current and voltage.

D. To generate magnetic fields.

ANSWER: C. To control the flow of current and voltage.

Calculate the equivalent resistance between A and B. (Refer to image 1)

A. 1.5 ohms

B. 2.5 ohms

C. 2 ohms

D. 3 ohms

ANSWER: C. 2 ohms

Image 1: https://drive.google.com/file/d/1GHvMAI6wy2-J9UswThWGXmrgfedrsKD5/view?usp=drive_link

ANSWER: C. 2 ohms

The voltages dropped across three resistors (R1, R2 and R3) connected in series are 5 V, 7 V and 10 V respectively. The supply current is 2 A. Calculate the supply voltage and the total value of the three resistors.

A. 27V and 10 ohms

B. 22V and 11 ohms

C. 22V and 10 ohms

D. 27V and 11 ohmsA.

ANSWER: B. 22V and 11 ohms

What is the equivalent Resistance (Rt) of the following circuit, R1 and R2 in Parallel, connected in series with R3?

A. Rt=R1+R2+R3

B. Rt=[(1/R1+1/R2)^-1]+R3

C. Rt=[1/(R1+R2)+1/R3]^-1

D. Rt=R1+(1/R2+1/R3)^-1

ANSWER: B. Rt=[(1/R1+1/R2)^-1]+R3

In a series resistive network with three resistors of values R1, R2, and R3 connected in series, which of the following statements is true regarding the total resistance denoted by R(total)?

A. R(total) = R1+R2+R3

B. R(total) = R1R2R3

C. R(total) = 1/(1/R1 + 1/R2 + 1/R3)

D. R(total) = (R1 + R2 + R3)/3

ANSWER: A. R(total) = R1+R2+R3

Find the voltage drop of the 50 Ohms resistor in the following circuit

A. 6.25 V

B. 37.5 V

C. 25 V

D. 62.5 V

Image Link : https://drive.google.com/file/d/1u0u5UycX8pCjoIHrIhXcK79uef5gB4PV/view?usp=sharing

ANSWER: D. 62.5V

1. Three 100 ohms resistors are connected in a tee-form (T) network and is set up between a 100 V supply and a load resistor RL. If maximum power transfer is desired. What should be the resistance of the load resistor RL?

A.50 ohms

B. 75 ohms

C. 125 ohms

D. 150 ohms

ANSWER: D. 150 ohms

In a complex resistive network, you have three resistors, R1, R2, and R3, connected in parallel. The network also includes a voltage source of V volts. If the current through R1 is 2 A, and the current through R2 is 3 A, what is the total current supplied by the voltage source V?

A. 1 A

B. 2 A

C. 3 A

D. 5 A

ANSWER:C. 3 A

The resistive network shown below is connected to a D.C. source of 16 V. The power consumed by the network is 4 watt. The value of R is https://drive.google.com/drive/folders/1CwvMCYRcz-ku34Abl4Jf1-Zfm9dbAHv8

A. 8 Ohms

B.16 Ohms

C. 1 Ohms

D. 6 Ohms

A. 8 Ohms

When solving electrical circuits using mesh analysis, how many essential mesh equations are typically formed for an N-node circuit?

Choices:

A. N

B. N - 1

C. N + 1

D. 2N

B. N - 1

Find the value of the currents I1 and I2 flowing clockwise in the first and second mesh respectively.Refer to figure 1Figure 1.png

A. 0.96A, 1.73A

B. 0.96A, -1.73A

C. -0.96A, 1.73A

D. -0.96A, -1.73A

ANSWER: B. 0.96A, -1.73A

Considering the circuit in figure 1. Find the current I flowing through 4ohm resistor.

A. 1.57A

B. 2A

C. 1A

D. 2.57A

Image: https://docs.google.com/document/d/1nIaNKaZlaIPtVm_OJunNwn8YwMhU7VE7uExOADGNTC0/edit?usp=sharing

ANSWER: A. 1.57A

When applying Kirchhoff's current law (KCL) to a node in an electrical circuit, which statement is true?

A. The sum of currents entering the node is equal to zero.

B. The sum of currents leaving the node is equal to zero.

C. The voltage at the node is equal to zero.

D. The voltage difference between the node and the ground is equal to zero.

ANSWER: B. The sum of currents leaving the node is equal to zero.

In the figure below, find the current going through the 1 Ohm resistor

A. 2A

B. 1.5 A

C. 3.5 A

D. 2.5 A

Image Link: https://drive.google.com/file/d/1E8SB8KhsCWP_9Cvo4uYCDCp26vyhVYPI/view?usp=drive_link

A. 2A

2. Mesh analysis is best used together with what circuit law?

A. KVL

B. KCL

C. VDT

D. CDT

ANSWER: A. KVL

In a parallel configuration, the total current is the sum of the currents through each resistor. Therefore, the total current supplied by the voltage source V is 2 A (current through R1) + 3 A (current through R2) + 0 A (current through R3) = 5 A.

What is the relationship between the mesh currents I4 and I5 in terms of the given currents I1, I2, and I3?

A. I4 = I1 + I3

B. I4 = I1 - I3

C. I4 = I1 - I2

D. I4 = I2 - I3

ANSWER: C. 14 = I1 - I2

Find the value of V if the current in the 3 ohm resistor=0.

https://drive.google.com/drive/folders/1CwvMCYRcz-ku34Abl4Jf1-Zfm9dbAHv8?usp=sharing

A. 3.5V

B. 6.5V

C. 7.5V

D. 8.5V

C. 7.5V

According to Thevenin's theorem, what is the equivalent resistance of a circuit when all independent sources are turned off?

Choices:

A. Zero

B. Infinity

C. Cannot be determined

D. Remains the same

D. Remains the same

In a _________ circuit, the total resistance is greater than the largest resistance in the circuit.

A. Series

B. Parallel

C. Either series or parallel

D. Neither series nor parallel

ANSWER: A. In series circuits, the total resistance is the sum of all the resistance in the circuit, hence the total is greater than the largest resistance.

In a circuit with no voltage sources, what is the sum of all mesh currents?

A) It depends on the circuit

B) Zero

C) Equal to the sum of all branch currents

D) Equal to the sum of all node voltages

B) Zero

Using mesh analysis, obtain the current through the 10V battery for the circuit shown in figure 1.

A. 2.36 A

B. 2 A

C. 0

D. 4. 91A

https://electronicspani.com/mesh-analysis-example-with-solution/ Current of the 10V battery is 4.91A which enters the battery through -ve terminal as shown.

ANSWER: D. 4.91A

Calculate the mesh currents I1 and I2 flowing in the first and second meshes respectively.

A. 1.75A, 1.25A

B. 0.5A, 2.5A

C. 2.3A, 0.3A

D. 3.2A, 6.5A

image: https://drive.google.com/file/d/1Gxtu8gYF0x0ilktuDkqNYboxOJkeEp9n/view?usp=sharing

ANSWER: A. 1.75A, 1.25A

Using mesh analysis, obtain the current through the 10V battery for the circuit shown in figure 1.

A. 4.91A

B. 4.91Ω

C. 3.61A

D. 3.45A

ANSWER: A. 4.91A

Loop currents should be assumed to flow in which direction?

A. straight

B. clockwise

C. counter-clockwise

D. either B or C arbitrarily selected

ANSWER: D. either B or C arbitrarily selected

When is mesh analysis typically preferred over node analysis?

(A) when the circuit has multiple voltage sources

(B) when the circuit has multiple current sources

(C) when the circuit has a large number of nodes

(D) when the circuit contains only resistors

(C) when the circuit has a large number of nodes

Find the Current i in the circuit of figure 3.68. https://docs.google.com/document/d/1u72qoBSCVq7AlN5G0odJD9XjmKaSYdDd91F5MEruRII/edit?usp=sharing

A. -2A

B. 5A

C. 3A

D. 4A

ANSWER: C. 3A

To solve for unknown mesh currents.

A. N

B. N - 1

C. N + 1

D. 2N

ANSWER: B. N - 1

Find the value of V1 if the current through the 1 ohm resistor=0A (Refer to Image 2):

A. 83.33V

B. 78.89V

C. 73.33V

D. 76.66V

Image 2: https://drive.google.com/file/d/1jvYUSzW9OAOM9aicADwuwesij0x73vhx/view?usp=drive_link

ANSWER: A. 83.33V

Superposition theorem is NOT applicable to networks containing

A. Nonlinear elements

B. Dependent voltage sources

C. Dependent current sources

D. Transformers

ANSWER: A. Nonlinear elements

Which network theorem can be used to analyze AC circuits in the frequency domain?

A. Thevenin's theorem

B. Norton's theorem

C. Superposition theorem

D. Fourier's theorem

A. Thevenin's theorem

Superposition Theorem can be applied only to circuits having

A. resistive elements

B. passive elements

C. non-linear elements

D. linear bilateral elements

ANSWER: D. linear bilateral elements

Determine True or False for the following statements:

1.The superposition theorem can be applied to electrical power calculations

2. Newton's resistance is always twice the Thevenin's resistance

A. true,true

B. true, false

C. false, true

D. false, false

ANSWER: D. false, false

Norton's theorem is ___ form of an equivalent circuit

A. voltage

B. current

C. both voltage and current

D. none of these

ANSWER: B. current

""Any resistance R in a branch of a network in which current I is flowing can be replaced by a voltage equal to IR."" This statement is known as the ___.

A. compensation theorem

B. reciprocity theorem

C. Millman's theorem

D. superposition theorem

ANSWER: A. compensation theorem

A load is connected to a network. At the terminal to which the load is connected, Rth=10ohms and Vth=40V. The maximum possible power supplied to the load is

(A) 40W

(B) 20W

(C) 80W

(D) 160W

(A) 40W

A load is connected to a network. At the terminal to which the load is connected, Rth=10 ohms and Vth= 40V. The maximum possible power supplied to the load is:

A. 80W

B. 160W

C. 20W

D. 40W

ANSWER: D. 40W

Which network theorem states that the voltage across two points in a network is equal to the current between those points multiplied by the impedance between them?

A. Superposition theorem

B. Thevenin's theorem

C. Norton's theorem

D. Ohm's law

ANSWER: D. Ohm's law

Find the equivalent value of Rth in the given figure below (refer to image 3):

A. 0.3 Ohm

B.0.2.5 Ohm

C. 0.4 Ohm

D. 1 Ohm

Image 3: https://drive.google.com/file/d/1oF9y0hJld4Tb6IojsyB3kxXlZf5sziiu/view?usp=drive_link

ANSWER: C. 0.4 Ohm

Determine the conductancec of a short circuit on 125V with a current of 600A, which results in a short circuit

A. 0.8S

B. 0.4S

C. 3.2S

D. 1.6S

ANSWER: C. 3.2S

Determine the equivalent thevenin resistance (Rth) of the circuit of Fig. 2

A. 12

B. 12.4

C. 13

D. 15.5

https://docs.google.com/document/d/1nIaNKaZlaIPtVm_OJunNwn8YwMhU7VE7uExOADGNTC0/edit

ANSWER: B. 12.4

Which network theorem dictates the relationship between overall current and resistance in a circuit to its voltage?

A. KCL

B. KVL

C. Ohm's Law

D. Superposition Theorem

ANSWER: C. Ohm's Law

Find the resistance across AB in the following circuit below

A. 7.85 Ohms

B. 9.65 Ohms

C. 9.85 Ohms

D. None Of the choices

Image Link:

https://drive.google.com/file/d/15XryVNbHQeHNCefs5ql242c0HB6tEgrt/view?usp=drive_link

B. 9.65 Ohms

3. A circuit is replaced by its Thevenin's equivalent to find current through a certain branch. If

VTH = 10 V and RTH = 20 Ω, the current through the branch

A. will always be 0.5 A

B. will always be less than 0.5 A

C. will always be equal to or less than 0.5 A

D. may be 0.5 A or more or less

ANSWER: A. will always be 0.5 A

In a complex electrical circuit, you are asked to find the equivalent resistance between two terminals A and B. The circuit includes a combination of resistors, voltage sources, and current sources. After performing various simplifications, you obtain a circuit with two resistors in parallel. The values of these resistors are R1 = 4 ohms and R2 = 6 ohms.

What is the equivalent resistance (R_AB) between terminals A and B?

A. 2 ohms

B. 4 ohms

C. 6 ohms

D. 12 ohms

ANSWER: B. 4 ohms

Superposition theorem can be applied only to circuits having

A. Resistive Elements

B. Passive Elements

C. Non-linear Elements

D. Linear Bilateral Elements

D . Linear Bilateral Elements

In a first-order RC circuit, how many time constants does it take for the voltage across the capacitor to reach approximately 63.2% of its final value after a step input?

Choices:

A. 1

B. 2

C. 3

D. 4

Correct

A. 1

A ramp voltage, v(t) = 100 t Volts, is applied to an RC differentiating circuit with R = 5kΩ and C = 4kΩ.The maximum output voltage is

A. 0.2 volt

B. 2.0 volts

C. 10.0 volts

D. 50.0 volts

ANSWER: B. 2.0 volts

In an RC circuit, a 10 μF capacitor is initially uncharged, and a 5 kΩ resistor is connected in series with it. If a 20 V DC voltage source is suddenly applied to the circuit at t = 0, what is the voltage across the capacitor (Vc) at t = 2 milliseconds (ms)?

A) 10 V

B) 15 V

C) 5 V

D) 20 V

C) 5 V

An alternating current of frequency 60Hz has a maximum value of 12A. Write down value of current for instantaneous values.

A. i = 12 Cos 377t

B. i = 12 Sin 377t

C. i = 12t Sin 377

D. i = 12t Cos 377

Given:

F = 60Hz

Im = 12A

W = 2πf = 2π x 60 = 377 rad∕sec

(i). Equation of instantaneous value is i = Im Sin wt

i = 12 Sin 377t

ANSWER: B. i = 12 Sin 377t

In the given circuit, find the current I in the 3-kΩ resistor at time t = 2 sec.

A) 4mA

B) 2mA

C) 4A

D) 2A

image: https://drive.google.com/file/d/1sBWgfqDCuMHnmJZ-dW_1t5zF0xXsPRe-/view?usp=drive_link

ANSWER: B. 2mA

In transient analysis of an electrical circuit, what does the term ""transient"" refer to?

A. Steady-state conditions

B. Time-varying voltages and currents

C. DC voltage sources

D. Low-frequency signals

ANSWER: B. Time-varying voltages and currents

Which waveform in which the rms (transient) value and the mean value are equal?

A. square wave

B. triangular wave

C. sine wave

D. sawtooth

ANSWER: A. square wave

During capacitor charging, the voltage actually rises to _______percent of its ________value after one time constant.

(A) 63.2, initial

(B) 63.2, final

(C) 37, initial

(D) 37, final

(B) 63.2, final

The steady state current through the 1H inductor in the circuit shown in the given figure is: https://docs.google.com/document/d/1-QQ6v8ePmzkALcykDiG-5dlGt6I8CeNKW6fhmczKNlc/edit?usp=sharing

A. 0

B. 3A

C. 5A

D. 4.6A

ANSWER: B. 3A

During transient analysis, what does the term ""initial conditions"" refer to?

A. The conditions at which a circuit reaches steady-state.

B. The values of components in a circuit.

C. The values of circuit elements at a specific moment before the transient event.

D. The steady-state voltages and currents in a circuit.

ANSWER: C. The values of circuit elements at a specific moment before the transient event.

The steady state current through the 1H inductor given in the circuit shown in image 4 is:

A. 3V

B. 6V

C. 4V

D. 1.5V

image 4: https://drive.google.com/file/d/1Si1QHVuHby1TPMxvkRg-dRqc8wh8c1Vs/view?usp=drive_link

ANSWER: A. 3V

In a parallel R-C circuit, the supply current always ___________ the applied voltage.

A. Leads

B. Lags

C. Remains in phase with

D. None of the above

ANSWER: A. Leads

With the given circuit of R, C with zero charge initially (Vc0=0V), and a switch that is initially open but closes at t=0, solve for Vc(t).

A. Vc(t)=Vc0*(1-e^(-t/(RC)))

B. Vc(t)=1*(Vc0-e^-t/(RC)))

C. Vc(t)=RC*(1-e^(-t/(Vc0)))

D. Vc(t)=1*(RC-e^(-t/(Vc0)))

ANSWER: A. Vc(t)=Vc0*(1-e^(-t/(RC)))

In transient analysis of an electrical circuit, what does a time constant represent?

A. The time it takes for a circuit to reach steady-state conditions.

B. The time it takes for a circuit to switch from DC to AC operation.

C. The time it takes for a circuit's response to decay to approximately 37% of its initial value.

D. The time it takes for a circuit to achieve maximum power transfer.

ANSWER: C. The time it takes for a circuit's response to decay to approximately 37% of its initial value.

Find the values of the R and C in the circuit given below

A. 7600 Ohms and .8uF

B. 8000 Ohms and .71uF

C. 8000 Ohms and .5uF

D. 7600 Ohms and .5uF

Image Link:

https://drive.google.com/file/d/1Fx-glQkS-CHlbFxuozXtN3Sk8m-BZMuh/view?usp=drive_link

C. 8000 Ohms and .5uF

4. In the circuit of figure the current through 5 Ω resistance at t = 0^+

is(image 4) (LINK:4.PNG)

A. 0A

B. 10A

C. 6.67 A

D. 5.1 A

ANSWER: C. 6.67 A; Current through inductance is zero. Current through 5 ohm resistance = 6.67A.

In a first-order RC circuit, a voltage step input is applied to the circuit, causing the voltage across the capacitor to change over time. The circuit parameters are as follows:

Resistance (R) = 10 ohms

Capacitance (C) = 20 microfarads (μF)

Initial voltage across the capacitor (Vc(0)) = 5 volts

Voltage step input (V_in) is a step from 0 volts to 10 volts at t = 0.

What is the time constant (τ) of this RC circuit?

A. 2 seconds

B. 10 seconds

C. 20 seconds

D. 200 seconds

ANSWER: C. 20 seconds

In a parallel R-C Circuit, the supply current always _______ the applied voltage.

A. Leads

B. Lags

C. Remains in phase with

D. None of the above

A. Leads

What is the node voltage at node B in a DC circuit when connected to a 12V battery with a resistor between nodes A and B, and another resistor between nodes B and C, if the resistors are both 4 ohms?

Choices:

A. 0V

B. 4V

C. 8V

D. 12V

Correct

D. 12V

Find the required battery capacity needed to operate on electronic equipment with power rating of 200 watts and 10 volts at 6 hours.

A. 60

B. 1200

C. 20

D. 120

ANSWER: D. 120

In a DC circuit, three resistors are connected in parallel. Resistor A has a resistance of 10 ohms, resistor B has a resistance of 15 ohms, and resistor C has a resistance of 20 ohms. What is the equivalent resistance of this parallel combination?

A) 2 ohms

B) 6 ohms

C) 30 ohms

D) 60 ohms

B) 6 ohms

An emf source of 6.0V is connected to a purely resistive lamp and a current of 2.0 amperes flows. All the wires are resistance-free. What is the resistance of the lamp?

A. 3.0Ω

B. 2.0Ω

C. 1.0Ω

D. 6.0Ω

ANSWER: A. The gain of potential energy occurs as a charge passes through the battery, that is, it gains a potential of ε=6.0V

. No energy is lost to the wires, since they are assumed to be resistance-free. By conservation of energy, the potential that was gained (i.e. ε=V=6.0V) must be lost in the resistor. So, by Ohm's Law:

V=IR

R=V/I

R=3.0Ω

Superposition theorem can not be applied to determine:

A. Power

B. Voltage

C. Current

D. All of These

ANSWER: A. Power

With reference to Fig 1.7, which of the following statement is true?

A. there is no series circuit

B. R1 is in series with R2

C. E and R1 form a series circuit

D. R1 is in series with R3

ANSWER: C. E and R1 form a series circuit

What is the conductance of a circuit having three 10-Ohm resistors in parallel ?

A. 0.3 S

B. 0.33 S

C. 3.33 S

D. 30 S

ANSWER: A. 0.3 S ; Solution: R(total) = 10/3 Ohms , G(total) = 1/R(total) = 0.3S

If there are two bulbs connected in series and one blows out, what happens to other bulb?

(A) the other bulb stops glowing

(B) the other bulb glows with increased brightness

(C) the other bulb continues to glow with the same brightness

(D) the other bulb also burns out

(A) the other bulb stops glowing

A DC voltage source has a source resistance variable from 5 ohms to 25 ohms and it is connected to a load of 10 ohms. For maximum power transfer, the source resistance should be:

A. 25 ohms

B. 5 ohms

C. 10 ohms

D. 15 ohms

ANSWER: B. 5 ohms

How can you mitigate the effects of electromagnetic interference (EMI) in a DC network?

A. Use shielded cables

B. Use longer cables

C. Increase the EMI sources

D. Use thinner cables

ANSWER: A. Use shielded cables

Find the values of current i1 and i2, respectively. Refer to Image 5.

A. 0.1, 0.3

B. -0.1, 0.3

C. -0.3, -0.1

D. -0.1, 0.3

Image 5: https://drive.google.com/file/d/1hjqcgE-WmPovZXgc-0McSmkd7OcsMtJq/view?usp=drive_link

ANSWER: C. -0.3, -0.1

Find the voltage across the 6 ohm resistor. Refer to figure 2.Figure 2.png

A) 150V

B) 181,6V

C) 27.24V

D) 54.48V

ANSWER: C) 27.24V

A circuit contains two resistors (R1=5ohms & R2=10ohms) in series, with voltage source 12V, find the total resistance and current of the circuit.

A. 3.33ohms, 3.6A

B. 15ohms, 0.8A

C. 3.33ohms, 0.8A

D. 15ohms, 3.6A

ANSWER: B. 15ohms, 0.8A

When solving DC network problems using the nodal analysis method, what is the fundamental principle that you apply to write equations for each node?

A. KVL

B. KCL

C. Ohm's Law

D. Superposition Theorem

ANSWER: B. KCL

Calculate the power dissipating through a resistor that is in a simple DC circuit, a 12-volt battery is connected to a single resistor. The resistance of the resistor is 6 ohms.

A. 24 W

B. 36W

C. 6W

D. 12 W

ANSWER: A. 24W

5. Resistors R1 and R2 are connected in parallel.

If R2 > R1, what can you say about the

resistance R of the combination?

A. R > R2

B. R2 > R > R1

C. R1 > R

D. None of the above

ANSWER: C. R1 > R

You are tasked with analyzing a complex DC network containing multiple resistors, voltage sources, and current sources. The network is subject to Kirchhoff's laws. After performing detailed calculations, you find that the current flowing through a specific resistor (R1) is 2 amperes. The voltage across another resistor (R2) is 8 volts.

What can you conclude about the power dissipated in resistor R2?

A. The power dissipated in R2 is 16 watts.

B. The power dissipated in R2 is 4 watts.

C. The power dissipated in R2 is 64 watts.

D. The power dissipated in R2 cannot be determined without knowing its resistance.

ANSWER: C. The power dissipated in R2 is 64 watts.

In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor?

A. Voltage

B. Current

C. Both Current and Voltage

D. Neither Current nor Voltage

B. Current

In an AC circuit, what is the phase relationship between current and voltage in a purely resistive element?

Choices:

A. 0 degrees

B. 45 degrees

C. 90 degrees

D. 180 degrees

Correct

A. 0 degrees

The relationship between frequency f, number of revolutions per second n and pair of poles p is given by

A. f = n/p

B. f = np

C. f = n/2p

D. f = 2np

ANSWER: B

ANSWER: B. f = np

In an AC circuit, a sinusoidal voltage source has a peak voltage of 220 V. What is the amplitude of this AC source?

A) 110 V

B) 220 V

C) 154.92 V

D) 311.84 V

A) 110 V

The equation for an alternating current is given by i = 77 sin 314t. What is the peak value?

A. 70 A

B. 80 A

C. 77 A

D. 87 A

ANSWER: C. 77 A

https://www.brainkart.com/article/Solved-Example-Problems-on-Alternating-Current-(AC)-and-Circuit_38526/

The general equation of an alternating current is i = Im sin ωt . On comparsion,

(i) Peak value, Im = 77 A

A 400 mH coil of negligible resistance is connected to an AC circuit in which an effective current of 6 mA is flowing. Find out the voltage across the coil if the frequency is 1000 Hz.

A. 15.072V (RMS)

B. 15.072V

C. 14.374V (RMS)

D. 14.374V

ANSWER: A. 15.072V (RMS)

A 50 resistance is connected in series with a coil having 25 resistance and 150 mH inductance. The circuit is connected to a voltage source of 200 sin wt. Calculate the instantaneous current

A. 2.9 sin wt

B. 1.7 sin (wt + 37°)

C. 2.1 sin (wt - 37°)

D. 5.11 sin (wt - 37°)

ANSWER: C. 2.1 sin (wt - 37°)

A series RL circuit has R of 10-Ohm and a load impedance (XL) of 5-Ohm. Its impedance in rectangular form is given by ___.

A. 10 + j5 Ohms

B. 10 + j10 Ohms

C. 10 - j5 Ohms

D. 10 - j10 Ohms

ANSWER: A. 10 + j5 Ohms

The power consumed in a circuit element wll be least when the phase difference between the current and voltage is

(A) 180 degrees

(B) 90 degrees

(C) 60 degrees

(D) 0 degrees

(B) 90 degrees

Form factor is the ration of

A. Average value divided by the rms value

B. Average value divided by the peak value

C. rms value divided by the average value

D. rms value divided by the peak value

ANSWER: C. rms value divided by the average value