MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Automotive Engine Auxiliary Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Where is the throttle valve is attached to control the flow of air? |
| A. | Clutch |
| B. | Accelerator |
| C. | Brake |
| D. | Hand brake |
| Answer» C. Brake | |
| 2. |
For which operation is the Lean air-fuel mixture required? |
| A. | Starting |
| B. | Idling |
| C. | Cruising |
| D. | Acceleration |
| Answer» D. Acceleration | |
| 3. |
Which among the following is not a function of the carburetor? |
| A. | A small reserve of fuel at constant head |
| B. | To vaporize the fuel to prepare a homogeneous mixture |
| C. | To supply the correct amount of air-fuel mixture |
| D. | To delay the ignition timing depending in the exhaust gas |
| Answer» E. | |
| 4. |
What is the correct stoichiometric ratio for an air-fuel mixture? |
| A. | 14.7:1 |
| B. | 14:1 |
| C. | 15:1 |
| D. | 9:1 |
| Answer» B. 14:1 | |
| 5. |
How is the fuel supply from the float chamber at any time is metered? |
| A. | Float chamber |
| B. | Fuel jet |
| C. | Throttle valve |
| D. | Nozzle |
| Answer» C. Throttle valve | |
| 6. |
In practice what is the fuel level in the float chamber that is maintained in millimeter below the nozzle? |
| A. | 10 |
| B. | 5 |
| C. | 20 |
| D. | 15 |
| Answer» C. 20 | |
| 7. |
What is the main function of a float in the float chamber? |
| A. | Constant head of fuel |
| B. | Ventilation |
| C. | Temperature control |
| D. | Enthalpy |
| Answer» B. Ventilation | |
| 8. |
Which of the following component is used to maintain the liquid-tight seal during vibration? |
| A. | Three-piece valve with rubber seat tip |
| B. | Vent |
| C. | Nozzle |
| D. | Throttle valve |
| Answer» B. Vent | |
| 9. |
What is the main function of a throttle valve? |
| A. | Temperature |
| B. | Air-fuel |
| C. | Enthalpy |
| D. | Entropy |
| Answer» C. Enthalpy | |
| 10. |
Which among the following does not affect the amount of fuel delivered? |
| A. | Jet size |
| B. | Float level |
| C. | Venturi vacuum |
| D. | Ignition timing |
| Answer» E. | |
| 11. |
Which of the following increases with the reduction of area in a venturi? |
| A. | Temperature |
| B. | Velocity |
| C. | Enthalpy |
| D. | Entropy |
| Answer» C. Enthalpy | |
| 12. |
Which of the following is provided in the float chamber to keep the pressure inside atmospheric? |
| A. | Float |
| B. | Fuel jet |
| C. | Small vent |
| D. | Throttle valve |
| Answer» D. Throttle valve | |
| 13. |
Which of the following material is used to make the float of a carburetor? |
| A. | Paper |
| B. | Sheet metal |
| C. | Nylon plastic |
| D. | Cast iron |
| Answer» C. Nylon plastic | |