MCQOPTIONS
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MCQOPTIONS
This section includes 315 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
Which of the following part is not needed on spark ignition engines using magneto ignition? |
| A. | Battery |
| B. | Spark plug |
| C. | Distributor |
| D. | Induction coil |
| E. | None of the above |
| Answer» B. Spark plug | |
| 252. |
The pressure of air for braking in case of heavy duty trucks in usually of the order of |
| A. | Depends upon the road conditions |
| B. | 1 to 2 atm |
| C. | 14 to 17 atm |
| D. | 4 to 7 atm |
| E. | 2 to 3 atm |
| Answer» E. 2 to 3 atm | |
| 253. |
The braking system provided on trains is |
| A. | Pneumatic |
| B. | Vaccum |
| C. | Hydraulic |
| D. | Mechanical |
| E. | Air assisted hydraulic |
| Answer» C. Hydraulic | |
| 254. |
In automobile braking system retarders are |
| A. | chemicals which limit the rate of pressure rise in engine |
| B. | chassis components which face wind resistance |
| C. | auxillary brakes which supplement the main brake |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 255. |
Automobile gears are generally made of |
| A. | Mild steel |
| B. | Alloy steel |
| C. | Cast iron |
| D. | Brass |
| E. | Stainless steel |
| Answer» C. Cast iron | |
| 256. |
For S.I. engine carburettor the float is usually made of |
| A. | Brass sheet |
| B. | Nylon |
| C. | Cast iron |
| D. | Either (A) or (B) |
| E. | Either (B) or (C) |
| Answer» E. Either (B) or (C) | |
| 257. |
Brake shoes are made of |
| A. | Pressed steel |
| B. | Cast aluminium |
| C. | Plastic fibre |
| D. | Either (A) or (B) |
| E. | Either (A) or (C) |
| Answer» E. Either (A) or (C) | |
| 258. |
The brake pipes in hydraulic brake systems are made of |
| A. | Aluminium |
| B. | Plastic |
| C. | Steel |
| D. | Rubber |
| E. | Polyvinylchloride |
| Answer» D. Rubber | |
| 259. |
Theoretically air required for the combustion of one kg of fuel is |
| A. | 17.4 kg |
| B. | 16.7 kg |
| C. | 18.9 kg |
| D. | 10 kg |
| E. | 14.5 kg |
| Answer» F. | |
| 260. |
In an internal combustion engine the approximate percentage of the combustion heat that passes to the cylinder walls is |
| A. | 75% |
| B. | 10% |
| C. | 5% |
| D. | 30% |
| E. | 60% |
| Answer» E. 60% | |
| 261. |
Springs are made of |
| A. | Carbon steel |
| B. | Stainless steel |
| C. | High speed steel |
| D. | Mild steel |
| E. | Spring steel |
| Answer» F. | |
| 262. |
The percentage of heat released from fuel air mixutre, in an internal combustion engine which is converted into useful work is roughly |
| A. | 60 - 64 percent |
| B. | 20 - 25 percent |
| C. | 35 - 45 percent |
| D. | 10 percent |
| E. | 15 - 20 percent |
| Answer» C. 35 - 45 percent | |
| 263. |
In a four stroke four cylinder petrol engine, the speed of distributor shaft is |
| A. | Half the engine speed |
| B. | Four times the engine speed |
| C. | Same as engine speed |
| D. | Double of engine speed |
| E. | Quarter of the engine speed |
| Answer» B. Four times the engine speed | |
| 264. |
In case of four cylinder in line engine, the number of firing stroke (s) in one revolution of crank is |
| A. | 3 |
| B. | 4 |
| C. | 2 |
| D. | Depends on the design of engine. |
| E. | 1 |
| Answer» D. Depends on the design of engine. | |
| 265. |
For a four stroke engine the maximum power output is reached at an air quantity |
| A. | Deficient by 15 to 20 percent |
| B. | Deficient by 25 to 30 percent |
| C. | Surplus by 15 to 20 percent |
| D. | Surplus by 5 to 10 percent |
| E. | Deficient by 5 to 10 percent |
| Answer» F. | |
| 266. |
A four sylinder four stroke petrol engine running at 1000 rpm will have in all how many sparks in one minute? |
| A. | 250 |
| B. | 500 |
| C. | 1000 |
| D. | 2000 |
| E. | None of the above |
| Answer» C. 1000 | |
| 267. |
Which one of the following is mounted between the engine and gear box? |
| A. | Propellor shaft |
| B. | Differential gear |
| C. | Reduction gear |
| D. | Clutch |
| E. | None of the above |
| Answer» E. None of the above | |
| 268. |
The value overlap in case of four stroke petrol engine is approximately |
| A. | 30? |
| B. | 60? |
| C. | 90? |
| D. | 120? |
| E. | None of the above |
| Answer» B. 60? | |
| 269. |
In S.I. engine if the spark plug deposit indicates black coating of soot, it therefore indicates that the engine has been generally operating on |
| A. | Too rich mixture |
| B. | Most economical mixture |
| C. | Too lean mixture |
| D. | Slightly rich mixture |
| E. | Stoichiometric mixture |
| Answer» B. Most economical mixture | |
| 270. |
In a four wheel drive the number of gear boxes is |
| A. | 2 |
| B. | 4 |
| C. | 1 |
| D. | One gear box with more gears |
| E. | Depends on the design of vehicle |
| Answer» B. 4 | |
| 271. |
Which vechicle is generally provided with four wheel drive |
| A. | Standard wagon |
| B. | Ambassador car |
| C. | Jeep |
| D. | Padmini car |
| E. | Metador |
| Answer» D. Padmini car | |
| 272. |
In a S.I. engine, if the colour of exhaust flame is bluish, transparent, it indicates that the mixture supplied to the engine is |
| A. | Suitable for maximum output |
| B. | Too lean |
| C. | Too rich |
| D. | Chemical correct |
| E. | Most economical |
| Answer» C. Too rich | |
| 273. |
A two stroke engine is generally preferred to a four stroke engine because |
| A. | Shocks and vibrations are less |
| B. | It can be earily started |
| C. | Its size is smaller |
| D. | Its fuel consumption is low |
| E. | It can be easily controlled |
| Answer» D. Its fuel consumption is low | |
| 274. |
In a S.I. engine burned white deposit on spark plug with molten globules indicates that the engine has been generally operating on |
| A. | Most economical mixture |
| B. | Slightly rich mixture |
| C. | Stoichiometric mixture |
| D. | Too rich mixture |
| E. | Too lean mixture |
| Answer» F. | |
| 275. |
The power developed in four stroke I.C. engine, for the same engine speed and cylinder volume, as compared to that of a two stroke engine is |
| A. | two times |
| B. | equal |
| C. | one half |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 276. |
In case of tractors the springs provided on rear wheel are |
| A. | No spring is provided |
| B. | Helical |
| C. | Depend on the design |
| D. | ombination of helical and leaft spring |
| E. | Leaf type |
| Answer» B. Helical | |
| 277. |
In the fuel injection pumps for Diesel engine the effective pressure strokes of the plungers in the fuel injection pump are regulated by means of a |
| A. | Camshaft |
| B. | Check valve |
| C. | Needle valve |
| D. | Control rack |
| E. | Fuel pump |
| Answer» E. Fuel pump | |
| 278. |
The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the cylinder from the crank-case, is known as |
| A. | cleaning |
| B. | priming |
| C. | scavenging |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 279. |
In the fuel injection pump of a Diesel engine, the fuel injection timing is adjusted by adjusting the |
| A. | Delivery valve |
| B. | Pump camshaft |
| C. | Lift of plunger |
| D. | Rotation plunger |
| E. | Tappets |
| Answer» E. Tappets | |
| 280. |
In a diesel engine the pipe carrying fuel from fuel pump to nozzle is made of |
| A. | Plastic |
| B. | Aluminium |
| C. | P.V.C. |
| D. | Steel |
| E. | Copper |
| Answer» E. Copper | |
| 281. |
Diesel fuel in a cylinder of CL engine will ignite when temperature of compressed air is |
| A. | 1000?C |
| B. | 1200?C |
| C. | 1500?C |
| D. | 2000?C |
| E. | None of the above |
| Answer» B. 1200?C | |
| 282. |
In a multi-cylinder engine, missing in one cylinder is likely to result from |
| A. | Clogged exhaust |
| B. | Vapour lock |
| C. | A defective spark plug |
| D. | An overheated engine |
| E. | None of the above |
| Answer» D. An overheated engine | |
| 283. |
The exhaust gases are driven out from engine cylinder by the fresh charge of the fuel enter in the cylinder, in case of |
| A. | Petrol engine |
| B. | Diesel engine |
| C. | Four stroke I.C. engines |
| D. | Two-stroke I.C. engines |
| E. | None of the above |
| Answer» E. None of the above | |
| 284. |
In case of Diesel engines into the engine cylinder during suction stroke |
| A. | air and fuel is drawn |
| B. | only fuel is drawn |
| C. | only air is drawn |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 285. |
In case of automobile moving under normal road conditions the amount of fuel injected is proportional to |
| A. | speed of vehicle |
| B. | square of speed of vehicle |
| C. | square root of speed of vehicle |
| D. | none of the above |
| E. | None of the above |
| Answer» B. square of speed of vehicle | |
| 286. |
In an Ambassador car the number of forward gears provided is |
| A. | 2 |
| B. | 6 |
| C. | 5 |
| D. | 4 |
| E. | 3 |
| Answer» E. 3 | |
| 287. |
Which of the following lamp in a car will have the least wattage |
| A. | Flasher bulb |
| B. | Head light bulb |
| C. | Stop light bulb |
| D. | Ignition warning light |
| E. | Parking light bulb |
| Answer» E. Parking light bulb | |
| 288. |
Air resistance to a car at 20 kmph is R. The air resistance at 40 kmph would be |
| A. | 4R2 |
| B. | 2 R |
| C. | R2 |
| D. | R |
| E. | 4 R |
| Answer» D. R | |
| 289. |
For car speed upto 100 kmph the mean deceleration in m/s2 taken as |
| A. | 4.5 |
| B. | 3.5 |
| C. | 2.5 |
| D. | 1.5 |
| E. | 5 |
| Answer» D. 1.5 | |
| 290. |
The number of cylinders in an Ambassador car is |
| A. | 4 |
| B. | 2 |
| C. | 8 |
| D. | 6 |
| E. | 3 |
| Answer» B. 2 | |
| 291. |
Differential gear box oil is usually renewed after |
| A. | 1000 km |
| B. | 2500 - 6000 km |
| C. | 10000 - 20000 km |
| D. | 2500 km |
| E. | 6000 km |
| Answer» C. 10000 - 20000 km | |
| 292. |
The spots from a car body are removed by |
| A. | Soap containing agents |
| B. | Soft sponge |
| C. | Washing with water |
| D. | Special cleaning agents |
| E. | Rubber brush and water |
| Answer» E. Rubber brush and water | |
| 293. |
Speedometer drive is usually taken from |
| A. | Gear box |
| B. | Dynamo |
| C. | Fan belt |
| D. | Front wheel |
| E. | Flywheel |
| Answer» E. Flywheel | |
| 294. |
Exhaust gas leakage into the cooling system is most likely to be due to a defective |
| A. | Cylinder head gasket |
| B. | Manifold gasket |
| C. | Water pump |
| D. | Radiator |
| E. | Any of the above |
| Answer» B. Manifold gasket | |
| 295. |
Diesel fuel as compared to petrol is |
| A. | More difficult to ignite |
| B. | Less difficult to ignite |
| C. | Equally difficult to ignite |
| D. | None of the above |
| E. | Compression ratio |
| Answer» B. Less difficult to ignite | |
| 296. |
Dilution of lubricating oil is caused by |
| A. | Solid contaminants like dust, etc. |
| B. | Solid combustion residues |
| C. | Worn off particles |
| D. | Water |
| E. | Fuels |
| Answer» F. | |
| 297. |
The function of oil scraper rings is to |
| A. | Lubricate cylinder walls |
| B. | Retain compression |
| C. | Maintain vacuum |
| D. | Reduce vacuum |
| E. | Reduce piston wear |
| Answer» B. Retain compression | |
| 298. |
The ignition of the charge in spark ignition engine before spark occurs in spark plug, is known as |
| A. | auto-ignition |
| B. | pre-ignition |
| C. | detonation |
| D. | none of the above |
| E. | None of the above |
| Answer» C. detonation | |
| 299. |
Which one of the following is antifriction bearing? |
| A. | Ball bearing |
| B. | Roller bearing |
| C. | Taper roller bearing |
| D. | Needle bearing |
| E. | All of the above |
| Answer» B. Roller bearing | |
| 300. |
The reaction time of an average driver from recognizing an obstacle is taken as |
| A. | 0.5 to 1.7 seconds |
| B. | 4.5 to 7.0 seconds |
| C. | 3.5 to 4.5 seconds |
| D. | 7 to 10 seconds |
| E. | 2 to 3.5 seconds |
| Answer» B. 4.5 to 7.0 seconds | |