MCQOPTIONS
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MCQOPTIONS
This section includes 4791 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1251. |
The Diesel engines are also known as |
| A. | spark ignition (S.I.) engines |
| B. | compression ignition (C.I.) engines |
| C. | steam engines |
| D. | none of these |
| Answer» C. steam engines | |
| 1252. |
The PCV valve incorporates a spring loaded plunger and opens in proportion to the level of vacuum pressure in the intake manifold. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 1253. |
Cold working of metal increases |
| A. | tensile strength |
| B. | yield strength |
| C. | hardness |
| D. | all of these |
| Answer» E. | |
| 1254. |
In welding aluminium with TIG arc welding, alternating current is used. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 1255. |
Linde welding uses |
| A. | neutral flame and right-ward technique |
| B. | oxidising flame and left-ward technique |
| C. | neutral flame and left-ward technique |
| D. | carburising flame and right-ward technique |
| Answer» E. | |
| 1256. |
The camshaft of a four stroke Diesel engine running at 1000 rpm will run at |
| A. | 500 rpm |
| B. | 1000 rpm |
| C. | 2000 rpm |
| D. | 4000 rpm |
| Answer» B. 1000 rpm | |
| 1257. |
The main merit of a multi-cylinder type cylinder sleeve is |
| A. | smaller engine dimensions |
| B. | better cooling efficiency |
| C. | high rigidity |
| D. | none of these |
| Answer» B. better cooling efficiency | |
| 1258. |
Extrusion |
| A. | is extensively used for making bolts and nuts |
| B. | is used for reducing the diameter of round bars and tubes by rotating dies which open and close rapidly on the work |
| C. | is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface |
| D. | consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part |
| Answer» E. | |
| 1259. |
The operation of cutting of a flat sheet to the desired shape is called |
| A. | shearing |
| B. | piercing |
| C. | punching |
| D. | blanking |
| Answer» B. piercing | |
| 1260. |
The fuel pump in the programmed fuel injection (PFI) system is located |
| A. | between the fuel-filler pipe and fuel tank |
| B. | in the fuel tank |
| C. | on the distributor mounting in the engine compartment |
| D. | on the engine compartment bulkhead |
| Answer» C. on the distributor mounting in the engine compartment | |
| 1261. |
The motion of the cam is transferred to the rocker arm, moving it upwards and downwards. This rocker-arm motion then forces the valve downwards against the force in the valve spring so that the valve can open. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1262. |
When a pattern is made in three parts, the top part, is known as a |
| A. | drag |
| B. | cheek |
| C. | cope |
| D. | none of these |
| Answer» D. none of these | |
| 1263. |
In welding magnesium with TIG arc welding, direct current with __________ is used. |
| A. | straight polarity |
| B. | reversed polarity |
| Answer» C. | |
| 1264. |
Which of the following is not a part of the chassis ? |
| A. | Wheels |
| B. | Front axle |
| C. | Steering system |
| D. | Seats |
| Answer» E. | |
| 1265. |
The capacity of a battery is usually expressed in terms of |
| A. | volts |
| B. | amperes |
| C. | weight |
| D. | ampere-hours |
| Answer» E. | |
| 1266. |
The condition that results in large quantities of CO emission is |
| A. | insufficient air during combustion |
| B. | insufficient fuel during combustion |
| C. | low temperature combustion |
| D. | high temperature combustion |
| Answer» B. insufficient fuel during combustion | |
| 1267. |
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 | |
| 1268. |
The sequence order of events in a four-stroke engine is |
| A. | suction - exhaust - power - compression |
| B. | suction - power - compression - exhaust |
| C. | suction - compression - power - exhaust |
| D. | exhaust - compression - power - suction |
| Answer» D. exhaust - compression - power - suction | |
| 1269. |
The instrument used to check specific gravity of acid in a battery is |
| A. | hydrometer |
| B. | hygrometer |
| C. | anemometer |
| D. | multimeter |
| Answer» B. hygrometer | |
| 1270. |
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. | |
| 1271. |
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 | |
| 1272. |
The camshaft is driven by the crankshaft via the timing belt. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 1273. |
The materials used for cylinder block are |
| A. | cast iron and steel |
| B. | cast iron and aluminium alloy |
| C. | steel and aluminium alloy |
| D. | brass and steel |
| Answer» C. steel and aluminium alloy | |
| 1274. |
When turning a corner, |
| A. | the front wheels are toeing out |
| B. | the front wheels are turning on different angles |
| C. | the inside front wheels has a greater angle than the outside wheel |
| D. | all of the above |
| Answer» E. | |
| 1275. |
The material generally used for cylinder sleeves is |
| A. | aluminium |
| B. | ceremic |
| C. | cast iron |
| D. | fibre reinforced plastic |
| Answer» D. fibre reinforced plastic | |
| 1276. |
In a square type engine |
| A. | geometrical shape is square |
| B. | diameter and length of piston are same |
| C. | two cylinders are placed horizontal and two vertical |
| D. | stroke length and cylinder bore are same |
| Answer» E. | |
| 1277. |
The advantage of a tubeless tyre over tube type tyre is |
| A. | slow air leakage |
| B. | better fuel efficiency |
| C. | less chances of running flat |
| D. | all of these |
| Answer» E. | |
| 1278. |
The basic purpose of tyre rotation on automobiles is to |
| A. | avoid ply separation |
| B. | equalize wear |
| C. | get better ride |
| D. | none of these |
| Answer» C. get better ride | |
| 1279. |
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 | |
| 1280. |
In a forced feed lubrication system, the device used to guard against excessive oil pressure, is known as |
| A. | release chamber |
| B. | balancer |
| C. | relief valve |
| D. | stop valve |
| Answer» D. stop valve | |
| 1281. |
The seat belt tensioners are built in the |
| A. | front seats |
| B. | shoulder anchors |
| C. | seat belt retractors |
| D. | seat belt buckles |
| Answer» D. seat belt buckles | |
| 1282. |
A maintenance free battery |
| A. | has lead-antimony plate grid |
| B. | has lead-calcium plate grid |
| C. | does not contain acid |
| D. | does not contain water |
| Answer» C. does not contain acid | |
| 1283. |
The function of a connecting rod is |
| A. | to turn the flywheel |
| B. | to drive the drive plate |
| C. | to drive the fuel pump |
| D. | to transmit motion of the piston to the crankshaft |
| Answer» E. | |
| 1284. |
In a Diesel engine, the fuel is ignited by |
| A. | an electric spark |
| B. | the heat of compression |
| C. | the hot exhaust |
| D. | none of these |
| Answer» C. the hot exhaust | |
| 1285. |
The engine oil level should be checked |
| A. | immediately after the ignition switch is turned off |
| B. | while the engine is running |
| C. | a few minutes after the ignition switch is turned off |
| D. | while the engine is running at high-idle speed |
| Answer» D. while the engine is running at high-idle speed | |
| 1286. |
Highest useful compression ratio (HUCR) is the highest compression ratio at which the |
| A. | engine can run |
| B. | engine gives maximum output |
| C. | engine is most efficient |
| D. | fuel can be used in a test engine without knocking |
| Answer» E. | |
| 1287. |
In Diesel engines, during suction stroke, __________ is drawn in the cylinder. |
| A. | air and fuel |
| B. | only fuel |
| C. | only air |
| D. | none of these |
| Answer» D. none of these | |
| 1288. |
The crankshaft of a typical in-line four cylinder engine has __________ balance weights. |
| A. | 12 |
| B. | 4 |
| C. | 16 |
| D. | 8 |
| Answer» E. | |
| 1289. |
The engine oil is stored in __________ when the engine is not running. |
| A. | oil pan |
| B. | cylinder head |
| C. | oil pump |
| D. | separate oil tank |
| Answer» B. cylinder head | |
| 1290. |
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 | |
| 1291. |
Which of the following is not an automobile ? |
| A. | Motor cycle |
| B. | Passenger car |
| C. | Aeroplane |
| D. | Truck |
| Answer» D. Truck | |
| 1292. |
In a four cylinder in-line engine, the number of firing strokes in one revolution of the crank is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 1293. |
When the vehicle is at rest, the clutch is in engaged position. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 1294. |
A petrol that detonates easily is called |
| A. | high octane petrol |
| B. | low octane petrol |
| C. | unleaded petrol |
| D. | blended fuel |
| Answer» C. unleaded petrol | |
| 1295. |
The compression ratio in Diesel engines is less than the petrol engine. |
| A. | Agree |
| B. | Disagree |
| Answer» C. | |
| 1296. |
In a four wheel drive (4WD), the number of gear boxes are |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 1297. |
How many cells are used in a 12 volt car battery ? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» D. 8 | |
| 1298. |
In an engine, the temperature of the piston will be more at the |
| A. | crown of the piston |
| B. | skirt of the piston |
| C. | piston walls |
| D. | piston rings |
| Answer» B. skirt of the piston | |
| 1299. |
A heat treated glass generally used in automobiles bursts into __________ upon cracking, |
| A. | sharp edged fragments |
| B. | small particles |
| Answer» C. | |
| 1300. |
In a four stroke engine for each crankshaft revolution, the camshaft revolves |
| A. | one-half turn |
| B. | one turn |
| C. | two turns |
| D. | four turns |
| Answer» B. one turn | |