MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
A sinusoidal voltage v = 50sinωt is applied to a series RL circuit. The current in the circuit is given by I = 25sin (ωt-53⁰). Determine the average power. |
| A. | 365 |
| B. | 370 |
| C. | 375 |
| D. | 380 |
| Answer» D. 380 | |
| 2. |
A sinusoidal voltage v = 50sinωt is applied to a series RL circuit. The current in the circuit is given by I = 25sin (ωt-53⁰). Find the power factor. |
| A. | 0.4 |
| B. | 0.5 |
| C. | 0.6 |
| D. | 0.7 |
| Answer» D. 0.7 | |
| 3. |
A sinusoidal voltage v = 50sinωt is applied to a series RL circuit. The current in the circuit is given by I = 25sin (ωt-53⁰). Determine the apparent power (VA). |
| A. | 620 |
| B. | 625 |
| C. | 630 |
| D. | 635 |
| Answer» D. 635 | |
| 4. |
The average power (Pavg) is expressed as? |
| A. | Pasecθ |
| B. | Patanθ |
| C. | Pacosθ |
| D. | Pasinθ |
| Answer» D. Pasinθ | |
| 5. |
The expression of true power (Ptrue) is? |
| A. | Pasinθ |
| B. | Pacosθ |
| C. | Patanθ |
| D. | Pasecθ |
| E. | is?a) Pasinθb) Pacosθc) Patanθd) Pasecθ |
| Answer» C. Patanθ | |
| 6. |
Reactive power is expressed in?a) Watts (W)b) Volt Amperes Reactive (VAR)c) Volt Ampere (V |
| A. | Watts (W) |
| B. | Volt Amperes Reactive (VAR) |
| C. | Volt Ampere (VA) |
| D. | No units |
| Answer» C. Volt Ampere (VA) | |
| 7. |
The reactive power equation (Pr) is? |
| A. | Ieff2 (ωL)sin2(ωt+θ) |
| B. | Ieff2 (ωL)cos2(ωt+θ) |
| C. | Ieff2 (ωL)sin(ωt+θ) |
| D. | Ieff2 (ωL)cos(ωt+θ) |
| Answer» B. Ieff2 (ωL)cos2(ωt+θ) | |
| 8. |
IN_THE_QUESTION_8_DETERMINE_THE_AVERAGE_POWER.?$ |
| A. | 365 |
| B. | 370 |
| C. | 375 |
| D. | 380 |
| Answer» D. 380 | |
| 9. |
FIND_THE_POWER_FACTOR_IN_THE_QUESTION_8.?$ |
| A. | 0.4 |
| B. | 0.5 |
| C. | 0.6 |
| D. | 0.7 |
| Answer» D. 0.7 | |
| 10. |
A sinusoidal voltage v = 50sinωt is applied to a series RL circuit. The current in the circuit is given by I = 25sin (ωt-53⁰). Determine the apparent power (VA)?# |
| A. | 620 |
| B. | 625 |
| C. | 630 |
| D. | 635 |
| Answer» D. 635 | |
| 11. |
The equation of reactive power is? |
| A. | P<sub>a</sub>cosθ |
| B. | P<sub>a</sub>secθ |
| C. | P<sub>a</sub>sinθ |
| D. | P<sub>a</sub>tanθ |
| Answer» D. P<sub>a</sub>tan‚âà√≠‚Äö√†√® | |
| 12. |
The average power (Pavg) is expressed as? |
| A. | P<sub>a</sub>secθ |
| B. | P<sub>a</sub>tanθ |
| C. | P<sub>a</sub>cosθ |
| D. | P<sub>a</sub>sinθ |
| Answer» D. P<sub>a</sub>sin‚âà√≠‚Äö√†√® | |
| 13. |
The expression of true power (Ptrue) is? |
| A. | P<sub>a</sub>sinθ |
| B. | P<sub>a</sub>cosθ |
| C. | P<sub>a</sub>tanθ |
| D. | P<sub>a</sub>secθ |
| Answer» C. P<sub>a</sub>tan‚âà√≠‚Äö√†√® | |
| 14. |
The power factor is the ratio of ________ power to the ______ power. |
| A. | average, apparent |
| B. | apparent, reactive |
| C. | reactive, average |
| D. | apparent, average |
| Answer» B. apparent, reactive | |
| 15. |
The expression of reactive power (Pr) is? |
| A. | V<sub>eff</sub>I<sub>m</sub>sinθ |
| B. | V<sub>m</sub>I<sub>m</sub>sinθ |
| C. | V<sub>eff</sub>I<sub>eff</sub>sinθ |
| D. | V<sub>m</sub>I<sub>eff</sub>sinθ |
| Answer» D. V<sub>m</sub>I<sub>eff</sub>sin‚âà√≠‚Äö√†√® | |
| 16. |
Reactive power is expressed in? |
| A. | Watts (W) |
| B. | Volt Amperes Reactive (VAR) |
| C. | Volt Ampere (VA) |
| D. | No units |
| Answer» C. Volt Ampere (VA) | |
| 17. |
The reactive power equation (Pr) is? |
| A. | I<sub>eff</sub><sup>2</sup> (ωL)sin2(ωt+θ) |
| B. | I<sub>eff</sub><sup>2</sup> (ωL)cos2(ωt+θ) |
| C. | I<sub>eff</sub><sup>2</sup> (ωL)sin(ωt+θ) |
| D. | I<sub>eff</sub><sup>2</sup> (ωL)cos(ωt+θ) |
| Answer» B. I<sub>eff</sub><sup>2</sup> (‚âà√¨‚àö¬¢L)cos2(‚âà√¨‚àö¬¢t+‚âà√≠‚Äö√†√®) | |