MCQOPTIONS
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MCQOPTIONS
This section includes 7 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 thermal efficiency of a diesel engine is about ____________ |
| A. | 15% |
| B. | 30% |
| C. | 50% |
| D. | 70% |
| Answer» C. 50% | |
| 2. |
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle ____________ |
| A. | combustion is at constant volume |
| B. | expansion and compression are isentropic |
| C. | maximum temperature is higher |
| D. | heat rejection is lower |
| Answer» E. | |
| 3. |
For constant maximum pressure and heat input, the air standard efficiency of the gas power cycle is in the order. |
| A. | Diesel cycle, Dual cycle, Otto cycle |
| B. | Otto cycle, Diesel cycle, Dual cycle |
| C. | Dual cycle, Otto cycle, Diesel cycle |
| D. | Diesel cycle, Otto cycle, Dual cycle |
| Answer» B. Otto cycle, Diesel cycle, Dual cycle | |
| 4. |
If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle is? |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
For the same compression ratio, the efficiency of dual combustion cycle is? |
| A. | greater than otto cycle |
| B. | less than diesel cycle |
| C. | less than otto cycle and greater than diesel cycle |
| D. | greater than both otto and diesel cycle |
| Answer» D. greater than both otto and diesel cycle | |
| 6. |
The efficiency of Carnot cycle is maximum for ____________ |
| A. | gas engine |
| B. | petrol engine |
| C. | steam engine |
| D. | reversible engine |
| Answer» E. | |
| 7. |
For same compression ratio and for same heat added ____________ |
| A. | Otto cycle is more efficient than Diesel Cycle |
| B. | Diesel cycle is more efficient than Otto Cycle |
| C. | Efficiency depends on other factors |
| D. | None of the mentioned |
| Answer» B. Diesel cycle is more efficient than Otto Cycle | |