MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanic Diesel knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Field coils in a generator produce permanent magnet. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which of the following is not an advantage of the alternator? |
| A. | Higher output |
| B. | Lower weight |
| C. | Less maintenance |
| D. | High efficiency |
| Answer» E. | |
| 3. |
If the lead-acid cell has a total of 17 cells, then what is the number of positive plates? |
| A. | 9 |
| B. | 8 |
| C. | 7 |
| D. | 6 |
| Answer» C. 7 | |
| 4. |
What is the material of an alternator frame? |
| A. | Cast iron |
| B. | Brass |
| C. | Copper |
| D. | Aluminum |
| Answer» E. | |
| 5. |
In an alternator, which component controls the output? |
| A. | Voltage regulator |
| B. | Cutout relay |
| C. | Current regulator |
| D. | Diode |
| Answer» B. Cutout relay | |
| 6. |
At the start of the engine, the charging voltage is _______ |
| A. | Lower |
| B. | Higher |
| C. | Same |
| D. | Zero |
| Answer» C. Same | |
| 7. |
What is the frequency of a vibrating contact type regulator for DC generator? |
| A. | 20 per second |
| B. | 200 per second |
| C. | 200 per minute |
| D. | 20 per minute |
| Answer» C. 200 per minute | |
| 8. |
Why is a thermistor used in an alternator regulator? |
| A. | To control maximum current |
| B. | To control maximum voltage |
| C. | To compensate for temperature change |
| D. | To control minimum current |
| Answer» D. To control minimum current | |
| 9. |
Which component in alternator produces a magnetic field? |
| A. | Frame |
| B. | Stator |
| C. | Regulator |
| D. | Rotor |
| Answer» E. | |
| 10. |
Which component in the DC generator produces a magnetic field? |
| A. | Stator |
| B. | Commutator |
| C. | Armature |
| D. | Carbon brushes |
| Answer» E. | |
| 11. |
Identify the winding as shown in the figure. |
| A. | Series winding |
| B. | Shunt winding |
| C. | Compound winding |
| D. | Parallel winding |
| Answer» D. Parallel winding | |
| 12. |
Allow the current to flow from the alternator to the battery but not in the opposite direction by the use of______ |
| A. | diode |
| B. | triode |
| C. | capacitor |
| D. | insulator |
| Answer» B. triode | |