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.
| 201. |
In cars a temperature indicating instrument is usually provided which indicates the temperature of |
| A. | Lubricating oil |
| B. | Air surrounding engine cylinders |
| C. | Jacket cooling water |
| D. | Engine piston |
| E. | Engine cylinder |
| Answer» D. Engine piston | |
| 202. |
Which one of the following is not the trade name of tractor in India? |
| A. | Standard |
| B. | Kirloskar |
| C. | Escort |
| D. | Ford |
| E. | HMT |
| Answer» B. Kirloskar | |
| 203. |
The angle of camber is usually |
| A. | 5? to 7? |
| B. | Between |
| C. | Less than |
| D. | 2? to 5? |
| E. | More than 7? |
| Answer» C. Less than | |
| 204. |
Which one of the following is a wrong staement? |
| A. | Scavenging is the process of removing the burnt gas from the engine cylinder by fresh charge coming into cylinder from the crank-case |
| B. | The power developed in four stroke I.S. engine, for the same engine speed and cylinder volume, as compared to that of a two stroke engine is one-half |
| C. | Instead of values, ports are used in case of two-stroke I.C. engines |
| D. | In case of four stroke I.C. engines, the exhaust gases are driven out from engine cylinder by fresh charge of the fuel entering the cylinder |
| E. | None of the above |
| Answer» E. None of the above | |
| 205. |
Which type of pump is preferred for pumping lubricating oil in automobile |
| A. | Reciprocating type |
| B. | Centrifugal pump with impeller shrouded on one side only |
| C. | Open impeller type |
| D. | Gear pump |
| E. | Centrifugal pump with impeller shrouded on both sides |
| Answer» E. Centrifugal pump with impeller shrouded on both sides | |
| 206. |
The device which is used for atomising and vapourising the petrol fuel and mixing it with the air in varying proportions, to suit the changing operating conditions of the engine, is known as |
| A. | injector |
| B. | Spark plug |
| C. | carburettor |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 207. |
As the gap between the electrodes of the spark plug increases |
| A. | spark intensity increases |
| B. | voltage required for sparking increases |
| C. | voltage required for sparking decreases |
| D. | frequency of sparking increases |
| E. | None of the above |
| Answer» C. voltage required for sparking decreases | |
| 208. |
In automobile ignition system, a distributor is mounted on |
| A. | low voltage side |
| B. | high voltage side |
| C. | both low as well as high voltage side |
| D. | neither low voltage nor high voltage side |
| E. | None of the above |
| Answer» C. both low as well as high voltage side | |
| 209. |
In triptane rating the non-knocking reference fuel is |
| A. | leaded 2,3,3 trimethyl butane |
| B. | isobutane, C4H10 |
| C. | butadiene C4H6 |
| D. | none of the above |
| E. | None of the above |
| Answer» B. isobutane, C4H10 | |
| 210. |
The maximum temperature in an I.C. engine is of the order of |
| A. | 2000-2500?C |
| B. | 1000-1500?C |
| C. | 1500-2000?C |
| D. | 2500-3000?C |
| E. | 500-1000?C |
| Answer» B. 1000-1500?C | |
| 211. |
Instead of values, ports are used 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 | |
| 212. |
The efficiency of mechanical brakes is usually |
| A. | 85 - 95 percent |
| B. | 60 - 70 percent |
| C. | 30 - 40 percent |
| D. | 99 percent |
| E. | 95 - 98 percent |
| Answer» C. 30 - 40 percent | |
| 213. |
Engine dynamo is usually driven by |
| A. | V-belt drive |
| B. | Gear drive |
| C. | Chain drive |
| D. | P-I-V drive |
| E. | Flat belt drive |
| Answer» B. Gear drive | |
| 214. |
The disadvantage of stratified charge engine is |
| A. | reduced power for a given engine size |
| B. | higher weight for bhp |
| C. | poor reliability |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 215. |
In a ball bearing which is more harder than the other parts? |
| A. | It It depends on the size of bearing |
| B. | Inner race |
| C. | Ball |
| D. | Outer race |
| E. | All are equally hardened |
| Answer» F. | |
| 216. |
In order to easily start the precombustion chamber diesel engine, in the early cold morning |
| A. | Spark plug is used |
| B. | Injector is used |
| C. | Glow plug is used |
| D. | Petrol is poured through inlet manifold |
| E. | None of the above |
| Answer» D. Petrol is poured through inlet manifold | |
| 217. |
If the first element of the fuel and C.I. air is having high temperature and a short ignition delay, then knocking will |
| A. | accelerate |
| B. | decrease |
| C. | remain constant |
| D. | none of the above |
| E. | None of the above |
| Answer» C. remain constant | |
| 218. |
Latex |
| A. | A milky juice of rubber |
| B. | A plastic |
| C. | A cover on wires carrying current to spark plugs |
| D. | A variety of lubricant |
| E. | A variety of P.V.C. |
| Answer» B. A plastic | |
| 219. |
In a four stroke engine, each cylinder has |
| A. | Three valves |
| B. | One valve |
| C. | Four valves |
| D. | Number of valves depends upon the engine design |
| E. | Two valves |
| Answer» F. | |
| 220. |
The castor is called positive when |
| A. | the top of the king pin axis is inclined to the rear of the vehicle |
| B. | the top of the king pin axis is inclined to the front of the vehicle |
| C. | the top of the king pin axis is inclined to the left of the vehicle |
| D. | the top of the king pin axis is inclined to the right of the vehicle |
| E. | None of the above |
| Answer» B. the top of the king pin axis is inclined to the front of the vehicle | |
| 221. |
Which of the following is not incorporated in scooters? |
| A. | Air cleaner |
| B. | Muffler |
| C. | Fuel pump |
| D. | Fuel filter |
| E. | None of the above |
| Answer» D. Fuel filter | |
| 222. |
Dynamo in automobile is a |
| A. | series generator |
| B. | shunt generator |
| C. | either of (A) and (B) above |
| D. | none of the above |
| E. | None of the above |
| Answer» C. either of (A) and (B) above | |
| 223. |
Noisy brakes indicate |
| A. | Grit on lining |
| B. | Drums scored |
| C. | Loose lining screws |
| D. | Distored brake spiders |
| E. | Any of the above |
| Answer» F. | |
| 224. |
In forced feed lubrication system the device used to guard against excessive oil pressure is known as |
| A. | Balancer |
| B. | Stop valve |
| C. | Release chamber |
| D. | Pressure actuator |
| E. | Relief valve |
| Answer» F. | |
| 225. |
The function of governor is |
| A. | To increase the speed of the engine at full load |
| B. | To decrease the speed of the engine at no load |
| C. | To maintain constant load at varying speeds |
| D. | To maintain constant speed at varying loads |
| E. | None of the above |
| Answer» E. None of the above | |
| 226. |
The freezing temperature of ordinary petrol is |
| A. | ? 30?C to ? 50?C |
| B. | ? 100?C to ? 117?C |
| C. | 10?C |
| D. | 0?C |
| E. | ? 5?C to ? 10?C |
| Answer» B. ? 100?C to ? 117?C | |
| 227. |
Steering gear |
| A. | rack and pinion type |
| B. | worm and roller type |
| C. | recirculating ball type |
| D. | Any of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 228. |
Air supply in case of Diesel engines is usually |
| A. | 5 to 10 percent surplus |
| B. | About 40 percent surplus |
| C. | 10 percent deficient |
| D. | Stoichometric |
| E. | 15 to 20 percent surplus |
| Answer» C. 10 percent deficient | |
| 229. |
In actual practice, the exhaust value of a four stroke I.C. engine should close |
| A. | exactly at the end of expansion stroke |
| B. | slightly before the end of exhaust stroke |
| C. | slightly after the end of exhaust stroke |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 230. |
Oil pan is attached |
| A. | In a separate unit away from the crankcase |
| B. | At the top of the cylinder block |
| C. | To the bottom of the cylinder block |
| D. | Adjacent to oil filters |
| E. | At the outside wall of the crank case |
| Answer» D. Adjacent to oil filters | |
| 231. |
About 5% of fuel in the lubricating oil lessen the ability to lubricate by about |
| A. | 30% |
| B. | 90% |
| C. | 10% |
| D. | 1% |
| E. | 5% |
| Answer» B. 90% | |
| 232. |
In an engine the probable cause for low oil pressure cannot be |
| A. | Use of dilute engine oil |
| B. | Excessive clearances at valve pushers |
| C. | Air leaks in oil pump suction line |
| D. | Use of heavy engine oil |
| E. | Water, sludge, dirt etc. restricting pump intake screen |
| Answer» E. Water, sludge, dirt etc. restricting pump intake screen | |
| 233. |
Engine starter motor is |
| A. | D.C. compound motor |
| B. | D.C. series motor |
| C. | Synchronous motor |
| D. | Single phase A.C. motor |
| E. | D.C. shunt motor |
| Answer» C. Synchronous motor | |
| 234. |
An automobile tyre will wear rapidly in case |
| A. | It is overloaded |
| B. | It is misaligned |
| C. | It is incorrectly inflated |
| D. | It is more frequently subjected to braking |
| E. | Any of the above |
| Answer» F. | |
| 235. |
Magneto ignition system is used in scooters and motor cycles because |
| A. | it is less costly |
| B. | it is less bulky and requires less maintenance |
| C. | it gives higher voltage across the terminals of spark plug |
| D. | none of the above |
| E. | None of the above |
| Answer» C. it gives higher voltage across the terminals of spark plug | |
| 236. |
The boiling point of Diesel fuel may be expected to be in the range |
| A. | 150?C to 200?C |
| B. | 70?C to 100?C |
| C. | 125?C to 135?C |
| D. | 220?C to 375?C |
| E. | 100?C to 112?C |
| Answer» E. 100?C to 112?C | |
| 237. |
Which motor cycle has maximum power rating? |
| A. | Rajdoot |
| B. | Yezdi |
| C. | Jawa |
| D. | Yamaha |
| E. | Bullet |
| Answer» E. Bullet | |
| 238. |
Which part of the engine is directly driven by the starting motor? |
| A. | Flywheel |
| B. | Camshaft |
| C. | Crankshaft |
| D. | Pulley |
| E. | Any of the above |
| Answer» B. Camshaft | |
| 239. |
Which of the following can be used for starting a 1000 H.P. diesel engine? |
| A. | Battery |
| B. | Shunt motor |
| C. | Small petrol engine |
| D. | Compressed air |
| E. | Any of the above |
| Answer» E. Any of the above | |
| 240. |
In a Diesel engine, during combustion the pressure may increase at a range of |
| A. | 55-75 atm |
| B. | 10-15 atm |
| C. | 20-30 atm |
| D. | 15-20 atm |
| E. | Depends on engine size and speed |
| Answer» B. 10-15 atm | |
| 241. |
The quantity of oil delivered by injection pump in diesel engine is controlled by |
| A. | upward movement of control helix |
| B. | downward movement of control helix |
| C. | rotation of control helix |
| D. | none of the above |
| E. | None of the above |
| Answer» D. none of the above | |
| 242. |
The time before actual fuel injection and pump olunger starts to pump fuel, is known as |
| A. | injection lag |
| B. | overlap |
| C. | ignition lag |
| D. | none of the above |
| E. | None of the above |
| Answer» B. overlap | |
| 243. |
The fuel lines connecting the fuel injection pump individual elements with corresponding injector should have |
| A. | Length in increasing order |
| B. | Minimum length |
| C. | Varying length |
| D. | Equal length |
| E. | Length in decreasing order |
| Answer» B. Minimum length | |
| 244. |
While starting a engine the starter pinion meshes with |
| A. | Gears in differential |
| B. | Engine flywheel ring gear |
| C. | Clutch |
| D. | Gears in gear box |
| E. | Propellor shaft |
| Answer» C. Clutch | |
| 245. |
The Diesel fuel pump is designed to supply fuel |
| A. | At constant quantity at all engine speeds |
| B. | In excess quantity than required by the injection pump |
| C. | Just sufficient against the demand of the injection pump |
| D. | In sufficient quantity in accordance with the engine speed |
| E. | In less quantity than required by the injection pump |
| Answer» E. In less quantity than required by the injection pump | |
| 246. |
Which one of the following does not form a part of the fuel supply system for a Diesel engine? |
| A. | Injector |
| B. | Filter |
| C. | Spray nozzles |
| D. | Supply pump |
| E. | Air cleaner |
| Answer» F. | |
| 247. |
The operation of removing trapped air from hydraulic braking system is known as |
| A. | Pressurization |
| B. | Tapping |
| C. | Trapping |
| D. | Clearing |
| E. | Bleeding |
| Answer» F. | |
| 248. |
The efficiency of hydraulic braking system is |
| A. | 50 - 60 percent |
| B. | 40 - 50 percent |
| C. | 25 - 40 percent |
| D. | About 90 percent |
| E. | 60 - 70 percent |
| Answer» E. 60 - 70 percent | |
| 249. |
Which one of the following is not a part of the chassis? |
| A. | Steering system |
| B. | Wheels |
| C. | Rear axles |
| D. | Passenger seats |
| E. | Front axle |
| Answer» E. Front axle | |
| 250. |
For faultless operation of hydraulic braking system |
| A. | Brake fluid should be pure |
| B. | Boiling point of brake fluid should be high |
| C. | Viscosity of brake fluid should be high |
| D. | There should be minimum amount of trapped air |
| E. | All of the above |
| Answer» E. All of the above | |