MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Farm Machinery knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The minimum temperature required for a liquid fuel to form a spontaneously combustible mixture is known as ____________ |
| A. | Flash point |
| B. | Fluid coupling |
| C. | Differential |
| D. | Disc brake |
| Answer» B. Fluid coupling | |
| 2. |
Which of the following is not a function of a flywheel? |
| A. | It stores energy during power stroke and returns back the same energy during the idle strokes, providing a rotary motion |
| B. | It carries ring gear that meshes with the pinion of starting motor |
| C. | It is used to join the connecting rod to piston |
| D. | It serves the purpose of a pulley for transmitting power |
| Answer» D. It serves the purpose of a pulley for transmitting power | |
| 3. |
A diesel engine transmits 25 KW at the end of the crankshaft, moving at 1650 rev/min, find the torque exerted by the piston. |
| A. | 148.90 Newton-metre |
| B. | 144.75 Newton-metre |
| C. | 150.75 Newton-metre |
| D. | 120.10 Newton-metre |
| Answer» C. 150.75 Newton-metre | |
| 4. |
A six-cylinder 4-stroke engine has bore diameter 11 cm and stroke length 12.2 cm running at 2800 rev/min consumes 455m2 of air per hour. What would be the volumetric efficiency of the engine? |
| A. | 75% |
| B. | 78.7% |
| C. | 77.8% |
| D. | 76% |
| Answer» D. 76% | |
| 5. |
A high-speed diesel engine operating at 2000 rev/min has a single cylinder. During the compression stroke, the fuel injection starts 20° before TDC and ends at TDC. Determine the duration the fuel injection takes place. |
| A. | 1/600 seconds |
| B. | 2/248 seconds |
| C. | 1/60 seconds |
| D. | 2/319 seconds |
| Answer» B. 2/248 seconds | |
| 6. |
Which of the following is not an example of drawbar dynamometer? |
| A. | Spring dynamometer |
| B. | Hydraulic dynamometer |
| C. | Electrical dynamometer |
| D. | Strain gauge dynamometer |
| Answer» D. Strain gauge dynamometer | |
| 7. |
The correct way of representing the compression ratio is __________ |
| A. | C.R.=\(\frac{Total \, cylinder \, volume}{Clearance \, Volume} \) |
| B. | C.R.=\(\frac{Clearance \, Volume}{Total \, Clearance \, Volume} \) |
| C. | C.R.=\(\frac{Total \, clearance \, volume}{Cylinder \, Volume} \) |
| D. | C.R.=\(\frac{Clearance \, volume}{Total \, cylinder \, volume} \) |
| Answer» B. C.R.=\(\frac{Clearance \, Volume}{Total \, Clearance \, Volume} \) | |
| 8. |
The device in which air-fuel mixture is prepared away from the cylinder of an engine is known as __________ |
| A. | Lubricant |
| B. | Delivery valve |
| C. | Nozzle holder |
| D. | Carburettor |
| Answer» E. | |
| 9. |
The process of removal of burnt or exhaust gases from the engine cylinder is known as ___________ |
| A. | Tappet |
| B. | Skirt |
| C. | Scavenging |
| D. | Suction |
| Answer» D. Suction | |
| 10. |
Which engine is designed to convert chemical energy of heavier fuel oil into mechanical energy? |
| A. | Diesel engine |
| B. | Petrol engine |
| C. | Injector |
| D. | Tappet clearance |
| Answer» B. Petrol engine | |