 
			 
			MCQOPTIONS
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				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. | The frictional mean effective pressure ____________ as the compression ratio is increased. | 
| A. | increases | 
| B. | decreases | 
| C. | remains same | 
| D. | none of the mentioned | 
| Answer» B. decreases | |
| 2. | When a smaller number of large cylinders are used, the friction and economy improve. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 3. | Blowby losses ____________ directly with compression ratio. | 
| A. | increases | 
| B. | decreases | 
| C. | remains same | 
| D. | none of the mentioned | 
| Answer» C. remains same | |
| 4. | ____________ losses are caused due to the leakage of combustion products past the piston from the cylinder into the crankcase. | 
| A. | Pumping | 
| B. | Blowby | 
| C. | Pressure | 
| D. | None of the mentioned | 
| Answer» C. Pressure | |
| 5. | BLOWBY_LOSSES______________DIRECTLY_WITH_COMPRESSION_RATIO.?$ | 
| A. | increases | 
| B. | decreases | 
| C. | remains same | 
| D. | none of the mentioned | 
| Answer» C. remains same | |
| 6. | The frictional mean effective pressure ____________ as the compression ratio is increased.$ | 
| A. | increases | 
| B. | decreases | 
| C. | remains same | 
| D. | none of the mentioned | 
| Answer» B. decreases | |
| 7. | When_a_smaller_number_of_large_cylinders_are_used,_the_friction_and_economy_improve.$ | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 8. | ____________ losses are caused due to the leakage of combustion products past the piston from the cylinder into the crankcase? | 
| A. | Pumping | 
| B. | Blowby | 
| C. | Pressure | 
| D. | None of the mentioned | 
| Answer» C. Pressure | |
| 9. | Combustion chamber pump loss is caused due to the pumping work required to pump gases into and out of the pre-combustion chamber. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 10. | The exhaust throttling loss occurs due to the restrictions imposed by air cleaner, carburetor venturi, throttle valve, intake manifold and intake valve. | 
| A. | True | 
| B. | False | 
| Answer» C. | |
| 11. | If due attention is not given to the valve size, valve timing and valve flow coefficients there may be a substantial loss with the increase in engine speed. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 12. | The standard practice for sizing the exhaust valve is to make them a certain percentage ____________ than the inlet valves. | 
| A. | larger | 
| B. | smaller | 
| C. | unpredictable | 
| D. | none of the mentioned | 
| Answer» C. unpredictable | |
| 13. | The pumping loss is negligible in two-stroke cycle engines. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 14. | In four stroke cycle engines, an ample amount of ____________ is used during intake and exhaust processes. | 
| A. | heat | 
| B. | pressure | 
| C. | power | 
| D. | none of the mentioned | 
| Answer» D. none of the mentioned | |
| 15. | The difference between I.P. and B.P. is known as total engine friction loss. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |