MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is sinϕ from impedance triangle? |
| A. | XL/R |
| B. | XL/Z |
| C. | R/Z |
| D. | Z/R |
| Answer» C. R/Z | |
| 2. |
What is φ in terms of voltage? |
| A. | φ=cos-1V/VR |
| B. | φ=cos-1V*VR |
| C. | φ=cos-1VR/V |
| D. | φ=tan-1V/VR |
| Answer» D. φ=tan-1V/VR | |
| 3. |
Which, among the following, is the correct expression for φ. |
| A. | φ=tan-1 (XL/R) |
| B. | φ=tan-1 (R/XL) |
| C. | φ=tan-1 (XL*R) |
| D. | φ=cos-1 (XL/R) |
| Answer» B. φ=tan-1 (R/XL) | |
| 4. |
A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the voltage across the inductor. |
| A. | 52V |
| B. | 82V |
| C. | 65V |
| D. | 76V |
| Answer» C. 65V | |
| 5. |
A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the voltage across the resistor. |
| A. | 31.8V |
| B. | 57.4V |
| C. | 67.3V |
| D. | 78.2V |
| Answer» C. 67.3V | |
| 6. |
AN_RL_NETWORK_IS_ONE_WHICH_CONSISTS_OF??$ |
| A. | Resistor and capacitor in parallel |
| B. | Resistor and capacitor in series |
| C. | Resistor and inductor in parallel |
| D. | Resistor and inductor in series |
| Answer» E. | |
| 7. |
What is φ in terms of voltage?# |
| A. | φ=cos<sup>-1</sup>V/VR |
| B. | φ=cos<sup>-1</sup>V*VR |
| C. | φ=cos<sup>-1</sup>VR/V |
| D. | φ=tan<sup>-1</sup>V/VR |
| Answer» D. ‚âà√¨‚àö√∫=tan<sup>-1</sup>V/VR | |
| 8. |
For an RL circuit, the phase angle is always ________ |
| A. | Positive |
| B. | Negative |
| C. | 0 |
| D. | 90 |
| Answer» C. 0 | |
| 9. |
Which, among the following, is the correct expression for φ.$ |
| A. | φ=tan<sup>-1</sup> (XL/R) |
| B. | φ=tan<sup>-1</sup> (R/XL) |
| C. | φ=tan<sup>-1</sup> (XL*R) |
| D. | φ=cos<sup>-1</sup> (XL/R) |
| Answer» B. ‚âà√¨‚àö√∫=tan<sup>-1</sup> (R/XL) | |
| 10. |
A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a x V 50Hz sinusoidal supply. The current in the circuit is 8.2A. Calculate the value of x. |
| A. | 10V |
| B. | 50V |
| C. | 100V |
| D. | 120V |
| Answer» D. 120V | |
| 11. |
A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the phase difference. |
| A. | -55.1 |
| B. | 55.1 |
| C. | 66.1 |
| D. | -66.1 |
| Answer» B. 55.1 | |
| 12. |
A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the current in the circuit. |
| A. | 2.2A |
| B. | 4.2A |
| C. | 6.2A |
| D. | 8.2A |
| Answer» E. | |