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This section includes 13 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. |
The loss in piston work due to the early opening of the exhaust valve is less than offset by better charging and scavenging of the engine. |
A. | True |
B. | False |
Answer» C. | |
2. |
The power developed by the turbocharger is not sufficient to drive the compressor, and overcome its mechanical friction. |
A. | True |
B. | False |
Answer» C. | |
3. |
The ignition must be retarded at high intake pressure and temperature. |
A. | True |
B. | False |
Answer» B. False | |
4. |
THE_POWER_DEVELOPED_BY_THE_TURBOCHARGER_IS_NOT_SUFFICIENT_TO_DRIVE_THE_COMPRESSOR,_AND_OVERCOME_ITS_MECHANICAL_FRICTION.?$ |
A. | True |
B. | False |
Answer» C. | |
5. |
The_loss_in_piston_work_due_to_early_opening_of_the_exhaust_valve_is_less_than_offset_by_better_charging_and_scavenging_of_the_engine.$ |
A. | True |
B. | False |
Answer» C. | |
6. |
The ignition must be retarded at high intake pressure and temperature? |
A. | True |
B. | False |
Answer» B. False | |
7. |
The ignition timings and thermal load on the engine affect the knock limit of CI engine. |
A. | True |
B. | False |
Answer» C. | |
8. |
Rich mixtures are used to control detonation, which further increases the specific fuel consumption of the engine. |
A. | True |
B. | False |
Answer» B. False | |
9. |
The increased flame speeds make the petrol engine more sensitive to fuel-air ratio and engine cannot run on strong mixtures without knock. |
A. | True |
B. | False |
Answer» C. | |
10. |
Increased intake pressure and temperature reduces ignition delay and decreases flame speed. |
A. | True |
B. | False |
Answer» C. | |
11. |
The supercharged petrol engines have a lower fuel consumption than naturally aspirated engines. |
A. | True |
B. | False |
Answer» C. | |
12. |
____________ in supercharging pressure increases the tendency to detonate and pre-ignite. |
A. | Decrease |
B. | Increase |
C. | Unpredictable |
D. | None of the mentioned |
Answer» B. Increase | |
13. |
Supercharging of S.I engines is employed only for aircraft and racing car engines. |
A. | True |
B. | False |
Answer» B. False | |