MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Network Theory knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Given two voltages, 50 0 V and 75 - 60 V. The sum of these voltages is ___________ |
| A. | 109 - 60 V |
| B. | 109 - 25 V |
| C. | 109 - 36.6 V |
| D. | 100 - 50.1 V |
| Answer» D. 100 - 50.1 V | |
| 2. |
Consider a cube having resistance R on each of its sides. For this non-planar graph, the number of independent loop equations are _______________ |
| A. | 8 |
| B. | 12 |
| C. | 7 |
| D. | 5 |
| Answer» E. | |
| 3. |
Consider a circuit having resistances 16 and 30 is excited by a voltage V. A variable resistance R is connected across the 16 resistance. The power dissipated in 30 resistance will be maximum when value of R is __________ |
| A. | 30 |
| B. | 16 |
| C. | 9 |
| D. | 0 |
| Answer» D. 0 | |
| 4. |
Consider a series RL circuit in which current 12 A is flowing through R and current 16 A is flowing through L. The current supplied by the sinusoidal current source I is ____________ |
| A. | 28 A |
| B. | 4 A |
| C. | 20 A |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 5. |
A 50 Hz current has an amplitude of 25 A. The rate of change of current at t = 0.005 after i = 0 and is increasing is ____________ |
| A. | 2221.44 A/s |
| B. | 0 |
| C. | -2221.44 A/s |
| D. | -3141.6 A/s |
| Answer» C. -2221.44 A/s | |
| 6. |
Two coils X and Y have self-inductances of 5 mH and 10 mH and mutual inductance of 3 mH. If the current in coils X change at a steady rate of 100 A/s, the emf induced in coil Y is ____________ |
| A. | 0.3 V |
| B. | 0.5 V |
| C. | 1 V |
| D. | 1.5 V |
| Answer» B. 0.5 V | |
| 7. |
A magnetic circuit has an iron length of 100 cm and air gap length 10 cm. If r = 200 then which of the following is true? |
| A. | Mmf for iron and air gap are equal |
| B. | Mmf for iron is much less than that for air gap |
| C. | Mmf for iron is much more than that for air gap |
| D. | Mmf for iron and air gap are not equal |
| Answer» B. Mmf for iron is much less than that for air gap | |
| 8. |
The Thevenin s equivalent of a network is a 10 V source in series with 2 resistances. If a 3 resistance is connected across the Thevenin s equivalent is _____________ |
| A. | 10 V in series with 1.2 resistance |
| B. | 6 V in series with 1.2 resistance |
| C. | 10 V in series with 5 resistance |
| D. | 6 V in series with 5 resistance |
| Answer» C. 10 V in series with 5 resistance | |
| 9. |
Barletts Bisection Theorem is applicable to ___________ |
| A. | Unsymmetrical networks |
| B. | Symmetrical networks |
| C. | Both unsymmetrical and symmetrical networks |
| D. | Neither to unsymmetrical nor to symmetrical networks |
| Answer» C. Both unsymmetrical and symmetrical networks | |
| 10. |
A parallel RLC circuit with R1 = 20, L1 = ( frac{1}{100} ) and C1 = ( frac{1}{200} ) is scaled giving R2 = 104, L2 = 10-4 and C2, the value of C2 is ___________ |
| A. | 0.10 nF |
| B. | 0.3 nF |
| C. | 0.2 nF |
| D. | 0.4 nF |
| Answer» D. 0.4 nF | |
| 11. |
The energy stored in a coil is 108 J. The power dissipated instantaneously across the blades of switch after it is opened in 10 ms is ____________ |
| A. | 108 W |
| B. | 1080 W |
| C. | 10800 W |
| D. | 108000 W |
| Answer» D. 108000 W | |
| 12. |
Consider an RL series circuit having resistance R = 3 , inductance L = 3 H and is excited by 6V. The current after a long time after closing of switch is ____________ |
| A. | 1 A |
| B. | 2 A |
| C. | 0 A |
| D. | Infinity |
| Answer» C. 0 A | |
| 13. |
If the diameter of a wire is doubled, the current carrying capacity of the wire is ___________ |
| A. | Half |
| B. | Twice |
| C. | Four times |
| D. | One-fourth |
| Answer» D. One-fourth | |