MCQOPTIONS
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MCQOPTIONS
This section includes 439 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
Direction: The following item consists of two statements, one labelled as ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the code given below:Statement I: Voltage is the energy per unit charge created by charge separation.Statement II: Power is energy per unit of time. |
| A. | Both Statement I and Statement II are individually true and Statement II is the correct explanation of Statement I |
| B. | Both Statement I and Statement II are individually true but Statement II is not the correct explanation of Statement I |
| C. | Statement I is true but Statement II is false |
| D. | Statement I is false but Statement II is true |
| Answer» C. Statement I is true but Statement II is false | |
| 352. |
Find the voltage across RL in figure when RL = 1 kΩ and 2 kΩ |
| A. | 9 V, 12 V |
| B. | 4 V, 8 V |
| C. | 16 V, 24 V |
| D. | 18 V, 36 V |
| Answer» B. 4 V, 8 V | |
| 353. |
3-A electric current flows through a 6 Ω resistor for 50 hours. What will be the energy consumed by the resistor? |
| A. | 9 kWh |
| B. | 0.9 kWh |
| C. | 27 kWh |
| D. | 2.7 kWh |
| Answer» E. | |
| 354. |
Find the power dissipated in 8 Ω resistors in the circuit |
| A. | 7.37 W |
| B. | 7.73 W |
| C. | 3.73 W |
| D. | 3.37 W |
| Answer» B. 7.73 W | |
| 355. |
If the current through a 1 H inductor is given by iL(t) = e-3t A, then the voltage across the inductor varies as ________ volts. |
| A. | e-3t |
| B. | -3e-3t |
| C. | 3e-3t |
| D. | e3t |
| Answer» C. 3e-3t | |
| 356. |
Calculate the voltage drop across 14.5 Ω resistance |
| A. | 14.5 V |
| B. | 18 V |
| C. | 29 V |
| D. | 30.5 V |
| Answer» D. 30.5 V | |
| 357. |
__________ is an example of a high-resistivity material. |
| A. | Copper |
| B. | Gold |
| C. | Silver |
| D. | Nichrome |
| Answer» E. | |
| 358. |
In the nodal analysis, for a network of N nodes, the number of the simultaneous equation to be solved to get the unknown is |
| A. | N - 1 |
| B. | N (N - 1) |
| C. | N (N + 1) |
| D. | N |
| Answer» B. N (N - 1) | |
| 359. |
Consider an element represented by the relationship between current i (t) and voltage v (t) as follows: v(t) = i2(t). This device is classified as: |
| A. | non-linear time variant |
| B. | non-linear time invariant |
| C. | linear time invariant |
| D. | linear time variant |
| Answer» C. linear time invariant | |
| 360. |
If 40 C of charge flow past a point in 20 s, What is the current ? |
| A. | 2 A |
| B. | 0.5 A |
| C. | 20 A |
| D. | 40 A |
| Answer» B. 0.5 A | |
| 361. |
Determine the conductance (in Mho) of a conductor, when the value of current that flows through the conductor is 2 A and the potential difference between the ends of the conductor is 40 V. |
| A. | 0.04 |
| B. | 0.05 |
| C. | 0.62 |
| D. | 0.24 |
| Answer» C. 0.62 | |
| 362. |
A short in any type of circuit (series, parallel or combination) causes the total circuit1. resistance to decrease2. power to decrease3. current to increase4. voltage to increaseWhich of the above are correct? |
| A. | 2 and 3 |
| B. | 2 and 4 |
| C. | 1 and 4 |
| D. | 1 and 3 |
| Answer» E. | |
| 363. |
In the diagram shown, what is the current in 1.5 Ω resistor? |
| A. | 2.25 A |
| B. | 2.5 A |
| C. | 2 A |
| D. | 1.5 A |
| Answer» E. | |
| 364. |
Find the electric current in the 4 Ω resistor in the following diagram. |
| A. | 0.711 A |
| B. | 0.824 A |
| C. | 1.325 A |
| D. | 1.438 A |
| Answer» C. 1.325 A | |
| 365. |
A network having one or more than one source of emf is called |
| A. | Passive network |
| B. | Active network |
| C. | Linear network |
| D. | Non-linear network |
| Answer» C. Linear network | |
| 366. |
Determine the conductance of a short circuit on 120 V, which results in a short circuit current of 500 A? |
| A. | 20 S |
| B. | 41.6 S |
| C. | 4.16 S |
| D. | 2.16 S |
| Answer» D. 2.16 S | |
| 367. |
In the diagram below, find the current in the 10 Ω resistor. |
| A. | 1.632 A |
| B. | 0.263 A |
| C. | 1.895 A |
| D. | 2.434 A |
| Answer» D. 2.434 A | |
| 368. |
In the diagram below, what is the magnitude of the current in the 15 Ω resistor? |
| A. | 4.95 A |
| B. | 5 A |
| C. | 1.0435 A |
| D. | 3.913 A |
| Answer» B. 5 A | |
| 369. |
Current and voltage in a pure inductor are characterized by: |
| A. | \(v = \frac{1}{L}\frac{{di}}{{dt}}\) |
| B. | \(i = L\frac{{dv}}{{dt}}\) |
| C. | \(v = L\frac{{di}}{{dt}}\) |
| D. | V = L × I |
| Answer» D. V = L × I | |
| 370. |
In a parallel resistive circuit, opening a branch result in1. Increase in total resistance2. decrease in total power3. No change in total voltage and branch voltageWhich of the above is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | only 3 |
| D. | 1, 2 and 3 |
| Answer» E. | |
| 371. |
A circuit whose behaviour and characteristics is same irrespective of the direction of current through various element is called: |
| A. | Unilateral |
| B. | Lumped |
| C. | Bilateral |
| D. | None of the given options |
| Answer» D. None of the given options | |
| 372. |
For the graph shown in the figure, find the value of the temperature coefficient of resistance (in °C) |
| A. | 0.02 |
| B. | 0.03 |
| C. | 0.05 |
| D. | 0.06 |
| Answer» E. | |
| 373. |
100 Ω, 1 watt composition or film resistor can sustain across it a maximum voltage of |
| A. | 10 volts |
| B. | 500 volts |
| C. | 150 volts |
| D. | Cannot be determined from given data |
| Answer» B. 500 volts | |
| 374. |
Loop-voltage equations of a passive circuit are given by:1) Zij = Zji, i, j = 1, 2, 32) Zii > 0, i = 1, 2, 33) Δ Z ≤ 0Which of the above relations is correct? |
| A. | 1 and 2 only |
| B. | 1 and 3 only |
| C. | 2 and 3 only |
| D. | 1, 2, and 3 |
| Answer» B. 1 and 3 only | |
| 375. |
In the following diagram, how much current is supplied by the battery? |
| A. | 3.25 A |
| B. | 1.438 A |
| C. | 1.325 A |
| D. | 2.15 A |
| Answer» E. | |
| 376. |
A conductor has a constant current of 4 A. How much of charge passes a fixed point on the conductor in one minute? |
| A. | 240 C/sec |
| B. | 240 C/min |
| C. | 60 C/sec |
| D. | 4 C/min |
| Answer» C. 60 C/sec | |
| 377. |
Each resistor consumes 100 W when connected across 230 V supply. If two such resistors are connected in series across the 230 V supply, the power consumed by the two together is |
| A. | 200 W |
| B. | 25 W |
| C. | 50 W |
| D. | 100 W |
| Answer» D. 100 W | |
| 378. |
Current passing through resistor R2: |
| A. | 1.67 mA |
| B. | 1 mA |
| C. | 1.95 mA |
| D. | 1.25 mA |
| Answer» B. 1 mA | |
| 379. |
Let V(t) be the voltage across an element and I(t) be the corresponding current passes through that element. How would one compute the energy consumed by that element? |
| A. | \(\smallint \left( {\frac{V}{I}} \right)dt\) |
| B. | \(\smallint \left( {V + I} \right)dt\) |
| C. | \(\smallint VIdt\) |
| D. | \(\frac{{\smallint V}}{I}dt\) |
| Answer» D. \(\frac{{\smallint V}}{I}dt\) | |
| 380. |
In the diagram below, what is the current in 1 Ω resistor? |
| A. | 0.824 A |
| B. | 1.325 A |
| C. | 0.113 A |
| D. | 2.15 A |
| Answer» E. | |
| 381. |
Calculate the current i in the resistor of the given network when vs = 15 V, is = 3 A and R = 5 Ω. |
| A. | 2 A |
| B. | 3 A |
| C. | 4 A |
| D. | 5 A |
| Answer» C. 4 A | |
| 382. |
Insulation resistance of insulating material should be: |
| A. | high |
| B. | one |
| C. | zero |
| D. | low |
| Answer» B. one | |
| 383. |
A 60 watts, 250 volts lamp is operated from 125 volt, its intensity is |
| A. | one fourth of original |
| B. | one half of original |
| C. | same as original |
| D. | zero value |
| Answer» B. one half of original | |
| 384. |
How much power will a 3 Ω resistor with electric current 2 A dissipate? |
| A. | 12 W |
| B. | 2 W |
| C. | 4 W |
| D. | 8 W |
| Answer» B. 2 W | |
| 385. |
Consider the following given figure and calculate the steady-state value of v(t) if i(t) is a unit step current. |
| A. | 2.5 V |
| B. | 1 V |
| C. | 0.1 V |
| D. | 0 |
| Answer» D. 0 | |
| 386. |
In series combination of resistance, the current through each resistance is _________. |
| A. | Higher in largest resistance |
| B. | Lower in largest resistance |
| C. | Same in each resistance |
| D. | Higher in smaller resistance |
| Answer» D. Higher in smaller resistance | |
| 387. |
Determine the capacitance (in F) of a parallel plate capacitor placed in air if the area of the parallel plate capacitor placed in air if the area of the parallel plate capacitor is 2 m2 and the distance between the plates is 0.02 m. |
| A. | 7.56 × 10-11 |
| B. | 9.65 × 10-10 |
| C. | 8.85 × 10-10 |
| D. | 6.65 × 10-10 |
| Answer» D. 6.65 × 10-10 | |
| 388. |
Consider the following given figure and calculate RAB |
| A. | 0.5 Ohm |
| B. | 2 Ohm |
| C. | 3 Ohm |
| D. | 7 Ohm |
| Answer» C. 3 Ohm | |
| 389. |
Find the equivalent capacitance of the network shown in the given figure. |
| A. | 100 pF |
| B. | \(\frac{{200}}{3}pF\) |
| C. | \(\frac{{100}}{3}pF\) |
| D. | \(\frac{{400}}{3}pF\) |
| Answer» C. \(\frac{{100}}{3}pF\) | |
| 390. |
A 10 μF and a 20μF capacitor are in series. The combination is supplied at 150 V from a sinusoidal voltage source. The voltage across the 20μF capacitor is then |
| A. | 75 V |
| B. | 125 V |
| C. | 100 V |
| D. | 50 V |
| Answer» E. | |
| 391. |
Observe the figure and find the correct relation from the four given options. |
| A. | i1 + i2 + i6 = i4 + i5 + i3 |
| B. | i4 + i2 + i3 = i1 + i5 + i6 |
| C. | i1 + i2 + i3 = i4 + i5 + i6 |
| D. | i1 + i2 + i4 = i3 + i5 + i6 |
| Answer» B. i4 + i2 + i3 = i1 + i5 + i6 | |
| 392. |
If three capacitances of 60 μF, each are connected in series then equivalent capacitance is |
| A. | 180 μ F |
| B. | 60 μ F |
| C. | 20 μ F |
| D. | 30 μ F |
| Answer» D. 30 μ F | |
| 393. |
In the following diagram, find the magnitude of the current in the 0.1 Ω resistor. |
| A. | 1.542 A |
| B. | 4.78 A |
| C. | 5.5 A |
| D. | 3.75 A |
| Answer» D. 3.75 A | |
| 394. |
A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then the voltage across each resistor will |
| A. | Become half |
| B. | become double |
| C. | increase by four times |
| D. | not change |
| Answer» E. | |
| 395. |
Petroleum jelly is applied to the terminals of the lead acid battery in order to prevent |
| A. | corrosion |
| B. | local heating |
| C. | short – circuiting |
| D. | all of these |
| Answer» B. local heating | |
| 396. |
Current Is in the following circuit is: |
| A. | 2 A |
| B. | 0.2 A |
| C. | 1 A |
| D. | 0.8 A |
| Answer» D. 0.8 A | |
| 397. |
If across an ideal resistor, the voltage drop is 24 V and the current passing through it is 6 A, then the resistor value (in ohms) is |
| A. | 144 |
| B. | 4 |
| C. | 0.25 |
| D. | none of the above |
| Answer» C. 0.25 | |
| 398. |
Energy consumed by an electric iron of rating 1000 W as compared to 750 W will be__________. |
| A. | More |
| B. | Less |
| C. | Half |
| D. | Same |
| Answer» B. Less | |
| 399. |
A 50 Watt light bulb burns an average of 10 hrs a day for one week. The total kilowatt hour consumption is |
| A. | 3.5 |
| B. | 35 |
| C. | 0.35 |
| D. | 0.035 |
| Answer» B. 35 | |
| 400. |
A linear system: |
| A. | Satisfies the properties of homogeneity but not of superposition |
| B. | satisfies the properties of superposition but not of homogeneity |
| C. | does not satisfy the properties of superposition and homogeneity |
| D. | satisfies the properties of superposition and homogeneity |
| Answer» E. | |