MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When the engine is suddenly accelerated there will be a small time delay before the extra energy discharged into the turbine housing volute can speed up the turbine wheel. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The compression of the charge entering the cells of the impeller depends upon the centrifugal force effect which decreases with the square of the rotational speed of the impeller wheel. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Turbocharged engines produce lower cylinder volumetric efficiencies compared with the normally aspirated induction systems. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The turbocharger relies solely on extracting up to a third of the wasted energy passing out from the engine’s cylinders to impart power to the turbine wheel and compressor wheel assembly. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
____________ of fuel energy is wasted as heat energy to engine’s coolant system. |
| A. | 7% |
| B. | 9% |
| C. | 16% |
| D. | 38% |
| Answer» D. 38% | |
| 6. |
WHEN_THE_ENGINE_IS_SUDDENLY_ACCELERATED_THERE_WILL_BE_A_SMALL_TIME_DELAY_BEFORE_THE_EXTRA_ENERGY_DISCHARGED_INTO_THE_TURBINE_HOUSING_VOLUTE_CAN_SPEED_UP_THE_TURBINE_WHEEL.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
THE_COMPRESSION_OF_THE_CHARGE_ENTERING_THE_CELLS_OF_THE_IMPELLER_DEPENDS_UPON_THE_CENTRIFUGAL_FORCE_EFFECT_WHICH_DECREASES_WITH_THE_SQUARE_OF_THE_ROTATIONAL_SPEED_OF_THE_IMPELLER_WHEEL.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
Turbocharged engines produce lower cylinder volumetric efficiencies compared with the normally aspirated induction systems? |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The turbocharger relies solely on extracting up to a third of the wasted energy passing out from the engine’s cylinders to impart power to the turbine wheel and compressor wheel assembly.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
____________ of fuel energy is wasted as heat energy to outgoing exhaust gases. |
| A. | 7% |
| B. | 9% |
| C. | 16% |
| D. | 38% |
| Answer» E. | |
| 11. |
____________ of fuel energy is wasted as heat energy to engine’s coolant system.$ |
| A. | 7% |
| B. | 9% |
| C. | 16% |
| D. | 38% |
| Answer» D. 38% | |
| 12. |
____________ of fuel energy is wasted as heat energy to surrounding air. |
| A. | 7% |
| B. | 9% |
| C. | 16% |
| D. | 38% |
| Answer» C. 16% | |
| 13. |
____________ of fuel energy is wasted as heat energy to friction, pumping and dynamic movement. |
| A. | 7% |
| B. | 9% |
| C. | 16% |
| D. | 38% |
| Answer» B. 9% | |
| 14. |
A typical petrol engine may harness up to ____________ of the energy contained in the fuel supplied. |
| A. | 20% |
| B. | 30% |
| C. | 40% |
| D. | none of the mentioned |
| Answer» C. 40% | |
| 15. |
Turbochargers are centrifugal compressors driven by the exhaust gas turbines. |
| A. | True |
| B. | False |
| Answer» B. False | |