MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the current flowing through an inductor of inductance 0.3Henry is 5.3t2+4.7t. Calculate the power. |
| A. | 0 |
| B. | 1 |
| C. | 16.854t3+22.41t2+6.62t |
| D. | 15.3t3+27.8t2+19 |
| Answer» D. 15.3t3+27.8t2+19 | |
| 2. |
A voltage across a capacitor of 0.5F is defined byV (t) = [0, t |
| A. | -2e-(t-2) A |
| B. | -4e-(t-2) A |
| C. | -20e-(t-2) A |
| D. | -12e-(t-2) A |
| Answer» B. -4e-(t-2) A | |
| 3. |
The voltage applied to the 212mH inductor is given by v(t)= 15e-5tv. Calculate the current. |
| A. | 16.782e-10t |
| B. | 15.75e-5t |
| C. | 11.27e-10t |
| D. | 14.15e-5t |
| Answer» E. | |
| 4. |
If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor. |
| A. | 5062.5W |
| B. | 506.25W |
| C. | 50.625W |
| D. | 50625W |
| Answer» C. 50.625W | |
| 5. |
The voltage applied to a pure capacitor of 50*10-6 F is as shown in figure. Calculate the current for 0-1msec. |
| A. | 5A |
| B. | 1A |
| C. | -5A |
| D. | -1A |
| Answer» B. 1A | |
| 6. |
The units for inductance is _________ and capacitance is ___________ |
| A. | Faraday, Henry |
| B. | Coulomb, Faraday |
| C. | Henry, Faraday |
| D. | Henry, Coulomb |
| Answer» D. Henry, Coulomb | |
| 7. |
The Inductor doesn’t allow sudden changes in ___________ |
| A. | Voltage |
| B. | Current |
| C. | Resistance |
| D. | Inductance |
| Answer» C. Resistance | |
| 8. |
The capacitor doesn’t allow sudden changes in ___________ |
| A. | Voltage |
| B. | Current |
| C. | Resistance |
| D. | Capacitance |
| Answer» B. Current | |
| 9. |
The formula used to find the capacitance C is __________ |
| A. | Q/v |
| B. | Qv |
| C. | Q-v |
| D. | Q + v |
| Answer» B. Qv | |
| 10. |
The voltage applied to the 212mH inductor is given by v(t)= 15e-5tv. Calculate the current.$ |
| A. | 16.782e<sup>-10t</sup> |
| B. | 15.75e<sup>-5t</sup> |
| C. | 11.27e<sup>-10t</sup> |
| D. | 14.15e<sup>-5t</sup> |
| Answer» B. 15.75e<sup>-5t</sup> | |
| 11. |
If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.$ |
| A. | 5062.5W |
| B. | 506.25W |
| C. | 50.625W |
| D. | 50625W |
| Answer» E. | |
| 12. |
The insulating medium between the two plates of capacitor is known as __________ |
| A. | Electrode |
| B. | Capacitive medium |
| C. | Conducting medium |
| D. | Dielectric |
| Answer» D. Dielectric | |
| 13. |
An Inductor works as a ___________ circuit for DC supply. |
| A. | Open |
| B. | Short |
| C. | Polar |
| D. | Non-polar |
| Answer» E. | |
| 14. |
If the voltage across a capacitor is constant, then current passing through it is ________ |
| A. | 1 |
| B. | 0 |
| C. | -1 |
| D. | Infinity |
| Answer» C. -1 | |
| 15. |
A voltage across a capacitor of 0.5F is defined by |
| A. | = [0, t<0 |
| B. | |
| C. | </sup>, t>2s] Find i (t). |
| Answer» C. </sup>, t>2s] Find i (t). | |
| 16. |
The units for inductance is _________ and capacitance is __________? |
| A. | Faraday, Henry |
| B. | Coulomb, Faraday |
| C. | Henry, Faraday |
| D. | Henry, Coulomb |
| Answer» B. Coulomb, Faraday | |
| 17. |
The expression for energy of an inductor ____________ |
| A. | ¬Ω LI |
| B. | L/2I |
| C. | ¬Ω L<sup>2</sup>I |
| D. | ¬Ω LI<sup>2</sup> |
| Answer» D. ¬¨¬®≈í¬© LI<sup>2</sup> | |
| 18. |
The capacitor doesn’t allow sudden changes in ___________$ |
| A. | Voltage |
| B. | Current |
| C. | Resistance |
| D. | Capacitance |
| Answer» C. Resistance | |
| 19. |
The formula used to find the capacitance C is __________ |
| A. | Q/v |
| B. | Qv |
| C. | Q-v |
| D. | Q + v |
| Answer» B. Qv | |