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 a 1.7 Ω resistor with 1.8 A current flowing through it. |
| A. | 5.5 W |
| B. | 5.1 W |
| C. | 5.4 W |
| D. | 5.7 W |
| Answer» B. 5.1 W | |
| 2. |
The slope of the V-I curve is 86.5°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line. |
| A. | 16.34 Ω |
| B. | 15.88 Ω |
| C. | 48.43 Ω |
| D. | 54.57 Ω |
| Answer» B. 15.88 Ω | |
| 3. |
Calculate the useful power developed by a motor using the given data: Pin = 10 W, Ia = .6 A, Ra=.2 Ω. Assume frictional losses are 2 W and windage losses are 3 W. |
| A. | 4.928 W |
| B. | 1.955 W |
| C. | 1.485 W |
| D. | 1.488 W |
| Answer» B. 1.955 W | |
| 4. |
Calculate the time period of the waveform y(t)=87cos(πt+289π÷4). |
| A. | 2 sec |
| B. | 37 sec |
| C. | 3 sec |
| D. | 1 sec |
| Answer» B. 37 sec | |
| 5. |
Calculate the value of the angular acceleration of the motor using the given data: J = .1 kg-m2, load torque = 45 N-m, motor torque = 55 N-m. |
| A. | 100 rad/s2 |
| B. | 222 rad/s2 |
| C. | 300 rad/s2 |
| D. | 400 rad/s2 |
| Answer» B. 222 rad/s2 | |
| 6. |
Calculate the active power developed by a motor using the given data: Eb = 5.5 V and I = .5 A. |
| A. | 2.75 W |
| B. | 2.20 W |
| C. | 5.30 W |
| D. | 5.50 W |
| Answer» B. 2.20 W | |