MCQOPTIONS
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MCQOPTIONS
This section includes 365 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. |
The sequence in which the force is transmitted through a brake system when the brake pedal is depressed is |
| A. | Brake pedal, master cylinder, brake lines, vacuum servo mechanism, brake pads |
| B. | Brake pedal, vacuum servo mechanism, master cylinder, brake lines, brake pads |
| C. | Brake pedal, master cylinder, vacuum servo mechanism, brake lines, brake pads |
| D. | Brake pedal, brake lines, vacuum servo mechanism, master cylinder, brake pads |
| Answer» C. Brake pedal, master cylinder, vacuum servo mechanism, brake lines, brake pads | |
| 202. |
The Diesel engines as compared to petrol engines require |
| A. | Bigger flywheel |
| B. | Smaller flywheel |
| C. | Same size of flywheel |
| D. | No flywheel |
| Answer» B. Smaller flywheel | |
| 203. |
The Diesel engine works on |
| A. | Otto cycle |
| B. | Carnot cycle |
| C. | Diesel cycle |
| D. | Rankine cycle |
| Answer» D. Rankine cycle | |
| 204. |
The petrol engine works on |
| A. | Otto cycle |
| B. | Carnot cycle |
| C. | Diesel cycle |
| D. | Rankine cycle |
| Answer» B. Carnot cycle | |
| 205. |
The material generally used for cylinder sleeves is |
| A. | Aluminium |
| B. | Ceramic |
| C. | Cast iron |
| D. | Fibre reinforced plastic |
| Answer» D. Fibre reinforced plastic | |
| 206. |
The characteristic that is enhanced by the use of cylinder sleeves is |
| A. | Cooling efficiency |
| B. | Resistance to wear |
| C. | Lubrication performance |
| D. | None of these |
| Answer» C. Lubrication performance | |
| 207. |
The component of the oil filter that prevents the passage of metal particles and sludge is |
| A. | Element |
| B. | Relief valve |
| C. | Check valve |
| D. | Case |
| Answer» B. Relief valve | |
| 208. |
The main purpose of an engine's air cleaner is that it |
| A. | Controls the engine's air intake volume |
| B. | Reduces the engine's air intake noise |
| C. | Prevents rain water from entering the engine |
| D. | Prevents dust and other foreign matter from entering the engine |
| Answer» E. | |
| 209. |
The exhaust gas from petrol engine contains |
| A. | Petrol vapours |
| B. | Water vapours |
| C. | Carbon monoxide |
| D. | All of these |
| Answer» E. | |
| 210. |
In Spark Ignition Engine |
| A. | Only air is introduced into the cylinder |
| B. | The mixture of air and fuel is introduced into the cylinder from carburettor |
| C. | Both (A) and (B) |
| D. | None of these |
| Answer» C. Both (A) and (B) | |
| 211. |
The best fuels for compression ignition engines are |
| A. | Straight chain paraffin |
| B. | Aromatics |
| C. | Branched chain paraffin |
| D. | Naphthalene |
| Answer» E. | |
| 212. |
Two advantages of using helical gears rather than spur gears in a transmission system are |
| A. | Strength and cost |
| B. | Strength and less end thrust |
| C. | Noise level and strength |
| D. | Noise level and economy |
| Answer» D. Noise level and economy | |
| 213. |
The purpose of turning radius gauges is to measure the |
| A. | Contact areas of the tyres |
| B. | Free plays of the steering wheel |
| C. | Turning radius of the left and right wheels |
| D. | Difference in the toe angles of the left and right wheels |
| Answer» D. Difference in the toe angles of the left and right wheels | |
| 214. |
The included angle is the sum of the |
| A. | Camber and castor |
| B. | Castor and S.A.I. |
| C. | Camber and S.A.I. |
| D. | Camber and toe in |
| Answer» D. Camber and toe in | |
| 215. |
The cam shaft in an engine is always mounted |
| A. | Parallel to the crankshaft |
| B. | Perpendicular to the crankshaft |
| C. | Inclined to the crankshaft |
| D. | None of these |
| Answer» B. Perpendicular to the crankshaft | |
| 216. |
During braking, the brake shoe is moved outward to force the lining against the |
| A. | Wheel piston or cylinder |
| B. | Anchor pin |
| C. | Brake drum |
| D. | Wheel rim or axle |
| Answer» D. Wheel rim or axle | |
| 217. |
What type of bearing is used for main bearings and connecting rod bearings? |
| A. | Ball bearings |
| B. | Plain bearings |
| C. | Needle roller bearing |
| D. | Taper roller bearing |
| Answer» C. Needle roller bearing | |
| 218. |
When the front wheels of a vehicle are locked during braking, then |
| A. | Stopping distance becomes extremely long |
| B. | Front tyres skid across the road surface, and the vehicle spins around |
| C. | Rear tyres skid across the road surface, and the vehicle spins around |
| D. | Driver loses control over the steering, and the vehicle continues moving in its current direction |
| Answer» E. | |
| 219. |
The brake pedal during ABS operation |
| A. | Is pushed upward forcefully |
| B. | Pedal stroke becomes longer |
| C. | Transmits slight kickback to the driver's foot |
| D. | All of the above |
| Answer» D. All of the above | |
| 220. |
In aluminium cylinder blocks, the cylinder liners are made of |
| A. | Aluminium |
| B. | Ceramic |
| C. | Brass |
| D. | Cast iron |
| Answer» E. | |
| 221. |
The gradient resistance to a vehicle having a mass of 980 kg moving on an incline of 10° is |
| A. | 1.6694 N |
| B. | 16.694 N |
| C. | 166.94 N |
| D. | 1669.4 N |
| Answer» E. | |
| 222. |
In bias ply tyres |
| A. | All plies run parallel to one another |
| B. | Belts of steel mesh are used in the tyres |
| C. | One ply layer runs diagonally one way and another layer runs diagonally the other way |
| D. | All of the above |
| Answer» D. All of the above | |
| 223. |
The path taken by intake air is |
| A. | Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders |
| B. | Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders |
| C. | Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders |
| D. | Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders |
| Answer» E. | |
| 224. |
The power source for a brake booster is |
| A. | Exhaust manifold pressure |
| B. | Electricity |
| C. | The pressure difference between the atmospheric pressure and the vacuum pressure in the intake manifold |
| D. | Hydraulic pump |
| Answer» D. Hydraulic pump | |
| 225. |
In comparison with a radial tyre, one advantage of a bias ply tyre is |
| A. | Longer life |
| B. | Lower rolling resistance |
| C. | Smoother ride at low speeds |
| D. | None of these |
| Answer» D. None of these | |
| 226. |
The crankshaft of a typical inline four cylinder engine has ________ balance weights. |
| A. | 12 |
| B. | 4 |
| C. | 16 |
| D. | 8 |
| Answer» E. | |
| 227. |
The commonly used antifreeze solution in automobiles is |
| A. | Carbon disulphide |
| B. | Ethylene glycol |
| C. | Ammonium chloride |
| D. | Freon-12 |
| Answer» C. Ammonium chloride | |
| 228. |
The most commonly used power plant in automobiles is |
| A. | Gas turbine |
| B. | I.C. engine |
| C. | Battery |
| D. | None of these |
| Answer» C. Battery | |
| 229. |
The number of exhaust manifolds in a V6 engine is |
| A. | One |
| B. | Two |
| C. | Four |
| D. | Eight |
| Answer» C. Four | |
| 230. |
In a ventilated disc brake |
| A. | A duct directs air towards the caliper for cooling while the vehicle is moving |
| B. | Caliper is covered with cooling fins |
| C. | Disc contains many small holes for optimum cooling performance |
| D. | Disc contains radial vanes between its rubbing surfaces for optimum cooling performance |
| Answer» E. | |
| 231. |
The combustion process in a Diesel engine is a |
| A. | Constant volume process |
| B. | Constant pressure process |
| C. | Constant temperature process |
| D. | Adiabatic process |
| Answer» C. Constant temperature process | |
| 232. |
The damper fluid leakage typically occur from |
| A. | Upper damper mounting |
| B. | Bottom of damper |
| C. | Clearance between inner and outer tubes of damper |
| D. | Coil spring mounting |
| Answer» D. Coil spring mounting | |
| 233. |
The minimum parking brake force is generally ___________ of gross vehicle mass (GVM). |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» E. | |
| 234. |
The ignition in a spark ignition engine takes place when the piston is |
| A. | Exactly at the T.D.C. position on its compression stroke |
| B. | Approaching the T.D.C. position on its compression stroke |
| C. | Leaving the T.D.C. position on its compression stroke |
| D. | Approaching the T.D.C position on its exhaust stroke |
| Answer» C. Leaving the T.D.C. position on its compression stroke | |
| 235. |
Which of the following bulb in a car will have the least wattage? |
| A. | Head light bulb |
| B. | Stop light bulb |
| C. | Parking light bulb |
| D. | Ignition warning bulb |
| Answer» E. | |
| 236. |
The order in which effort applied to the steering wheel is transferred to the front wheel is |
| A. | Steering wheel, steering gearbox, steering shaft, tie rod, steering knuckle, front wheels |
| B. | Steering wheel, steering shaft, steering gearbox, tie rod, steering knuckle, front wheels |
| C. | Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels |
| D. | Steering wheel, tie rod, steering gearbox, steering shaft, steering knuckle, front wheels |
| Answer» C. Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels | |
| 237. |
The gear shift lever requires two separate motions to shift gears, and the first movement |
| A. | Moves the synchronizer |
| B. | Selects the synchronizer |
| C. | Meshes the gears |
| D. | Operates the clutch |
| Answer» C. Meshes the gears | |
| 238. |
The correct flow of power through the drive train is |
| A. | Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels |
| B. | Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels |
| C. | Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels |
| D. | Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels |
| Answer» C. Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels | |
| 239. |
The purpose of a cylinder head gasket is to |
| A. | Prevent the combustion gases from leaking from the joint between the cylinder block and the cylinder head |
| B. | Prevent engine oil from going into combustion chamber |
| C. | Removes impurities from cylinder head lubricating oil |
| D. | None of the above |
| Answer» B. Prevent engine oil from going into combustion chamber | |
| 240. |
The temperature indicating instrument in vehicles indicates the temperature of |
| A. | Engine piston |
| B. | Engine cylinder |
| C. | Lubricating oil |
| D. | Jacket cooling water |
| Answer» E. | |
| 241. |
The braking control type traction control system (TCS) generally operates in the speed range of |
| A. | Less than 20 kmph |
| B. | Less than 40 kmph |
| C. | Less than 60 kmph |
| D. | More than 60 kmph |
| Answer» C. Less than 60 kmph | |
| 242. |
The connecting rod connects the piston and the |
| A. | Cylinder head |
| B. | Cylinder block |
| C. | Camshaft |
| D. | Crankshaft |
| Answer» E. | |
| 243. |
The crescent shaped cavity on the piston head top surface is called as |
| A. | Piston oil hole |
| B. | Snap ring |
| C. | Valve recess |
| D. | Valve clearance |
| Answer» D. Valve clearance | |
| 244. |
The specific gravity of petrol is about |
| A. | 0.75 |
| B. | 0.85 |
| C. | 0.95 |
| D. | 1.25 |
| Answer» B. 0.85 | |
| 245. |
The calorific value of petrol is about |
| A. | 36.5-38.5 MJ/kg |
| B. | 39.4-42.5 MJ/kg |
| C. | 42.7-43.5 MJ/kg |
| D. | 45.5-47 MJ/kg |
| Answer» D. 45.5-47 MJ/kg | |
| 246. |
A four cylinder engine has a capacity of 2.4 litres. The swept volume of one cylinder is |
| A. | 400 cm³ |
| B. | 600 cm³ |
| C. | 1200 cm³ |
| D. | 2400 cm³ |
| Answer» C. 1200 cm³ | |
| 247. |
The specific gravity of Diesel is about |
| A. | 0.65 |
| B. | 0.75 |
| C. | 0.85 |
| D. | 0.95 |
| Answer» D. 0.95 | |
| 248. |
The main function of the brake fluid is |
| A. | Lubrication |
| B. | Power transmission |
| C. | Cooling |
| D. | None of these |
| Answer» C. Cooling | |
| 249. |
The discharged lead acid battery has on its plates |
| A. | Lead peroxide (PbO₂) |
| B. | Spongy lead (Pb) |
| C. | Lead sulphate (PbSO₄) |
| D. | Sulphuric acid (H₂SO₄) |
| Answer» D. Sulphuric acid (H₂SO₄) | |
| 250. |
In Diesel engines, the duration between the time of injection and the time of ignition is called |
| A. | Spill cut-off |
| B. | Delay period |
| C. | Injection period |
| D. | Ignition period |
| Answer» C. Injection period | |