MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the active power in an 8965 Ω resistor with .23 A current flowing through it. |
| A. | 547.12 W |
| B. | 474.24 W |
| C. | 554.78 W |
| D. | 123.88 W |
| Answer» C. 554.78 W | |
| 2. |
The slope of the V-I curve is 6.9°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line. |
| A. | .38 Ω |
| B. | .59 Ω |
| C. | .34 Ω |
| D. | .12 Ω |
| Answer» E. | |
| 3. |
Calculate the value of the frequency if the capacitive reactance is .1 Ω and the value of the capacitor is .02 F. |
| A. | 71.25 Hz |
| B. | 81.75 Hz |
| C. | 79.61 Hz |
| D. | 79.54 Hz |
| Answer» D. 79.54 Hz | |
| 4. |
Calculate the useful power developed by a motor using the given data: Eb = 4V and I = 52 A. Assume frictional losses are 3 W and windage losses are 2 W. |
| A. | 203 W |
| B. | 247 W |
| C. | 211 W |
| D. | 202 W |
| Answer» B. 247 W | |
| 5. |
Calculate the phase angle of the sinusoidal waveform u(t)=154sin(9.85πt-π÷89). |
| A. | -78π÷9 |
| B. | -12π÷5 |
| C. | -π÷89 |
| D. | -2π÷888 |
| Answer» D. -2π÷888 | |
| 6. |
Calculate the angular frequency of the waveform y(t)=69sin(40πt+4π). |
| A. | 40π Hz |
| B. | 60π Hz |
| C. | 70π Hz |
| D. | 20π Hz |
| Answer» B. 60π Hz | |