MCQOPTIONS
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MCQOPTIONS
This section includes 6 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 brake mean effective pressure of an I.C. engine with an increase in speed will ____________ |
| A. | increase |
| B. | decrease |
| C. | remain same |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 2. |
The ignition of charge by some hot surface in the engine cylinder before operation of spark plug is known as ____________ |
| A. | auto ignition |
| B. | pre-ignition |
| C. | detonation |
| D. | none of the mentioned |
| Answer» C. detonation | |
| 3. |
The ratio of actual cycle efficiency to that of the ideal cycle efficiency is called ____________ |
| A. | effectiveness |
| B. | work ratio |
| C. | efficiency ratio |
| D. | net efficiency |
| Answer» D. net efficiency | |
| 4. |
As compared to air cycle, in actual working, What is the effect of variation in specific heats? |
| A. | increase maximum pressure and maximum temperature |
| B. | reduce maximum pressure and maximum temperature |
| C. | increase maximum pressure and decrease maximum temperature |
| D. | none of the mentioned |
| Answer» C. increase maximum pressure and decrease maximum temperature | |
| 5. |
Fuel air efficiency is less than air standard efficiency by an amount equal to ____________ |
| A. | pumping loss |
| B. | friction loss |
| C. | loss due to specific heat and chemical equilibrium |
| D. | exhaust blow down loss |
| Answer» D. exhaust blow down loss | |
| 6. |
The ratio of the actual efficiency and the fuel air cycle efficiency for C.I. engines is about ____________ |
| A. | 0.2-0.3 |
| B. | 0.5-0.6 |
| C. | 1.0 |
| D. | 0.6-0.8 |
| Answer» E. | |