MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
As the load increases the maximum pressure in the cylinder has a tendency to increase slightly. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Higher the oil viscosity ____________ is the friction loss. |
| A. | lower |
| B. | greater |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 3. |
A rise in cooling water temperature ____________ engine friction through its effect on oil viscosity. |
| A. | increases |
| B. | reduces |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 4. |
Blow by losses are reduced as the engine speed is ____________ |
| A. | increased |
| B. | reduced |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» B. reduced | |
| 5. |
Blow by losses vary as the square root of inlet pressure, and increases as the compression ratio are ____________ |
| A. | increased |
| B. | reduced |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» B. reduced | |
| 6. |
The bearing friction includes the friction due to the main bearing connecting rod bearing and other bearings. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
HIGHER_THE_OIL_VISCOSITY______________IS_THE_FRICTION_LOSS.?$ |
| A. | lower |
| B. | greater |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 8. |
As_the_load_increases_the_maxim,um_pressure_in_the_cylinder_has_a_tendency_to_increase_slightly.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
A rise in cooling water temperature ____________ engine friction through its effect on oil viscosity? |
| A. | increases |
| B. | reduces |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 10. |
Blow by losses are reduced as the engine speed is |
| A. | increased |
| B. | reduced |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» B. reduced | |
| 11. |
Blow by losses vary as the square root of inlet pressure, and increases as the compression ratio is |
| A. | increased |
| B. | reduced |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» B. reduced | |
| 12. |
Blow by losses depend on the outlet pressure and compression ratio. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
The blow by losses is the phenomenon of leakage of combustion products past the piston and piston rings from the cylinder to the crankcase. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
The valve gear friction losses vary with the engine design variables and no general equation is available predicting them. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
Bearing friction is viscous in nature and does not depends upon the oil viscosity, the speed, size and geometry of the journal. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
The bearing friction includes the friction due to main bearing connecting rod bearing and other bearings. |
| A. | True |
| B. | False |
| Answer» B. False | |