MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the ip =2.62 kW and bp = 2.4 kW than fp = 5.04 kW |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
What is brake specific fuel consumption of engine whose fuel consumption if 6 grams per second and power output is 90 kW? |
| A. | 0.24 kg/kWh |
| B. | 0.0667 kg/kWh |
| C. | 0.54 kg/kWh |
| D. | 0.44 kg/kWh |
| Answer» B. 0.0667 kg/kWh | |
| 3. |
The bore and stroke of the single-cylinder four-stroke engine are 90 mm and 120 mm respectively. The torque is 24 Nm. What is the brake mean effective pressure of the engine? |
| A. | 3.9 bar |
| B. | 4.9 bar |
| C. | 5.9 bar |
| D. | 6.9 bar |
| Answer» B. 4.9 bar | |
| 4. |
The indicated power of the single-cylinder engine is 1.9 kW. It develops torque of 10 Nm at 1600 rpm. What is the friction power as the percentage of brake power? |
| A. | 12.43% |
| B. | 13.43% |
| C. | 14.43% |
| D. | 15.43% |
| Answer» C. 14.43% | |
| 5. |
Which of the following relation between indicated mean effective pressure (imep), brake mean effective pressure (bmep) and friction mean effective power (fmep) is correct? |
| A. | imep = fmep + bmep |
| B. | imep = fmep * bmep |
| C. | imep = fmep bmep |
| D. | imep = fmep / bmep |
| Answer» B. imep = fmep * bmep | |
| 6. |
The Otto engine consumes 9 liters of petrol per hour and develops 30 kW. The specific gravity of petrol is 0.8 and its calorific value is 45000 kJ/kg. What is the indicated thermal efficiency of the engine? |
| A. | 33.33% |
| B. | 25% |
| C. | 30% |
| D. | 32% |
| Answer» E. | |
| 7. |
What does the Sankey diagram represent? |
| A. | Torque vs speed |
| B. | Heat balance of the engine |
| C. | Air consumption vs speed |
| D. | bth vs brake power |
| Answer» C. Air consumption vs speed | |
| 8. |
What is volumetric efficiency? |
| A. | A measure of the power of the engine |
| B. | A measure of the speed of the engine |
| C. | A measure of pressure rise in the cylinder |
| D. | A measure of breathing capacity of the engine |
| Answer» E. | |
| 9. |
What is mechanical efficiency? |
| A. | The ratio of friction power to brake power |
| B. | The ratio of the brake power to indicated power |
| C. | The ratio of indicated power to friction power |
| D. | The ratio of friction power to indicated power |
| Answer» E. | |