MCQOPTIONS
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MCQOPTIONS
This section includes 8 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. |
A diesel tractor consumes 5 litres per hour of fuel whose density is 0.836 kg per litre. The heating value of the fuel is 45.4 MJkg-1. If the thermal efficiency of the engine is 0.30, the transmission efficiency is 0.90 and the tractive efficiency is 0.75, the drawbar power of the tractor will be __________ |
| A. | 10.54 KW |
| B. | 13.18 KW |
| C. | 18.98 KW |
| D. | 39.53 KW |
| Answer» B. 13.18 KW | |
| 2. |
Which of the following stages is the last stage of the combustion process in diesel engine? |
| A. | Period of rapid pressure rise and heat transmission |
| B. | Period of after burn |
| C. | Period of direct burning of later injected fuel |
| D. | Delay period before ignition |
| Answer» C. Period of direct burning of later injected fuel | |
| 3. |
Which of the following is not a feature of diesel engine? |
| A. | Engine has compression ratio 14:1 to 22:1 |
| B. | The control by hand lever or pedal lever is easy |
| C. | Ignition takes place due to heat of compression only |
| D. | During compression stroke, the engine attains high pressure ranging from 30 to 45 kg/cm2 |
| Answer» C. Ignition takes place due to heat of compression only | |
| 4. |
Which of the following is not a method of supplying fuel to the jet of the carburettor? |
| A. | Suction method |
| B. | Throttle system |
| C. | Overflow method |
| D. | Float valve method |
| Answer» C. Overflow method | |
| 5. |
What is the viscosity index for an oil having viscosity = 100s at 38°C? (L=137.9; H=107.1) |
| A. | 132.38 |
| B. | 285.38 |
| C. | 120.06 |
| D. | 122.72 |
| Answer» E. | |
| 6. |
What is the quantity of water which is to be circulated through the radiator, if diesel tractor developed 80 KW with coolant temperature difference 5.5° C? |
| A. | 9.44 L/s |
| B. | 10.01 L/s |
| C. | 7.44 L/s |
| D. | 8.44 L/s |
| Answer» D. 8.44 L/s | |
| 7. |
Cooling system of a 6.8 KW diesel engine at full load will remove heat at a rate of ________ |
| A. | 1.63 calories/min |
| B. | 6.80 calories/min |
| C. | 97.6 calories/min |
| D. | 408 calories/min |
| Answer» D. 408 calories/min | |
| 8. |
Which is the third port, apart from exhaust and suction ports used in two-stroke engine? |
| A. | Transfer port |
| B. | Transport valve |
| C. | Top dead centre |
| D. | Bottom dead centre |
| Answer» B. Transport valve | |