MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Electric Drives knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Calculate the value of the angular acceleration of the machine using the given data: J = .541 kg-m2, load torque = 10 N-m, motor torque = 2 N-m. |
| A. | 45 rad/s<sup>2</sup> |
| B. | The machine will fail to start |
| C. | 30 rad/s<sup>2</sup> |
| D. | 51 rad/s<sup>2</sup> |
| Answer» C. 30 rad/s<sup>2</sup> | |
| 2. |
Calculate the value of the angular acceleration of the Heavy duty crane using the given data: J = 5 kg-m2, load torque = 30 N-m, motor torque = 80 N-m. |
| A. | 10 rad/s<sup>2</sup> |
| B. | 20 rad/s<sup>2</sup> |
| C. | 30 rad/s<sup>2</sup> |
| D. | 50 rad/s<sup>2</sup> |
| Answer» B. 20 rad/s<sup>2</sup> | |
| 3. |
Calculate the frequency of the stator side of the IM if the value of slip is 0.04 and rotor frequency is 2 Hz. |
| A. | 50 Hz |
| B. | 49 Hz |
| C. | 45 Hz |
| D. | 51 Hz |
| Answer» B. 49 Hz | |
| 4. |
1800 second rated motors are used for __________ |
| A. | Heavy duty cranes |
| B. | Light duty cranes |
| C. | Medium duty cranes |
| D. | Intermittent duty cranes |
| Answer» D. Intermittent duty cranes | |
| 5. |
Induction motor is also known as __________ |
| A. | Frequency changer |
| B. | Frequency remover |
| C. | Time period remover |
| D. | DC machine |
| Answer» B. Frequency remover | |
| 6. |
Which duty cycle has on load and off-loads period? |
| A. | Intermittent duty |
| B. | Short time duty |
| C. | Continuous duty with constant load |
| D. | Continuous duty with variable load |
| Answer» B. Short time duty | |