MCQOPTIONS
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MCQOPTIONS
This section includes 7 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 total heat dissipated in a resistor of 12 Ω when 9.2 A current flows through it. |
| A. | 2.01 KW |
| B. | 3.44 KW |
| C. | 1.01 KW |
| D. | 2.48 KW |
| Answer» D. 2.48 KW | |
| 2. |
Calculate the active power in a 1.2 Ω resistor with 1.8 A current flowing through it. |
| A. | 3.88 W |
| B. | 3.44 W |
| C. | 3.12 W |
| D. | 2.18 W |
| Answer» B. 3.44 W | |
| 3. |
The slope of the V-I curve is 15.5°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line. |
| A. | .277 Ω |
| B. | .488 Ω |
| C. | .443 Ω |
| D. | .457 Ω |
| Answer» B. .488 Ω | |
| 4. |
Calculate the useful power developed by a motor using the given data: Pin= 1500 W, Ia= 6 A, Ra=.2 Ω. Assume frictional losses are 50 W and windage losses are 25 W. |
| A. | 1400 W |
| B. | 1660.5 W |
| C. | 1417.8 W |
| D. | 1416.7 W |
| Answer» D. 1416.7 W | |
| 5. |
Calculate the time period of the waveform y(t)=7cos(54πt+2π÷4). |
| A. | .055 sec |
| B. | .037 sec |
| C. | .023 sec |
| D. | .017 sec |
| Answer» C. .023 sec | |
| 6. |
Calculate the value of the angular acceleration of the motor using the given data: J = 36 kg-m2, load torque = 66 N-m, motor torque = 26 N-m. |
| A. | 1.11 rad/s2 |
| B. | 2.22 rad/s2 |
| C. | 3.33 rad/s2 |
| D. | 4.44 rad/s2 |
| Answer» B. 2.22 rad/s2 | |
| 7. |
Calculate the power developed by a motor using the given data: Eb = 55 V and I = 6 A. |
| A. | 440 W |
| B. | 220 W |
| C. | 330 W |
| D. | 550 W |
| Answer» D. 550 W | |