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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.
| 1501. |
The reconditioning process used to give cylinder bore surfaces a cross-hatch pattern, is known as |
| A. | honing |
| B. | porous plating |
| C. | boring |
| D. | shot peening |
| Answer» B. porous plating | |
| 1502. |
The basic purpose of a four wheel drive (4WD) system is that it |
| A. | delivers improved cornering on dry road surfaces |
| B. | eliminates the need of snow tyres, tyre chains, etc. |
| C. | ensures effective transmission of engine torque to all four wheels, even on slippery road surfaces |
| D. | ensures that effective braking can be performed, even on slippery surfaces |
| Answer» D. ensures that effective braking can be performed, even on slippery surfaces | |
| 1503. |
The heat transfer from coolant to air in the radiator of an automobile engine takes place by |
| A. | radiation only |
| B. | convention only |
| C. | convection and radiation |
| D. | conduction, convection and radiation |
| Answer» D. conduction, convection and radiation | |
| 1504. |
The main function of a master cylinder is to |
| A. | adjust the extent of brake pedal free play |
| B. | boost the force applied to brake pedal |
| C. | convert brake pedal force into hydraulic pressure |
| D. | ensure that all the wheel brakes are supplied with the same amount of fluid pressure |
| Answer» D. ensure that all the wheel brakes are supplied with the same amount of fluid pressure | |
| 1505. |
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. | |
| 1506. |
The ignition coil is used to |
| A. | step up current |
| B. | step down current |
| C. | step up voltage |
| D. | step down voltage |
| Answer» D. step down voltage | |
| 1507. |
The main function of the brake fluid is |
| A. | lubrication |
| B. | power transmission |
| C. | cooling |
| D. | none of these |
| Answer» C. cooling | |
| 1508. |
The function of a carburettor is to control the amount and ratio of air-fuel mixture. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1509. |
The component in the radiator of an automobile that increases the boiling point of water is |
| A. | drain plug |
| B. | water jacket |
| C. | vacuum valve |
| D. | pressure cap |
| Answer» E. | |
| 1510. |
The parking brakes employed in vehicles are operated |
| A. | mechanically |
| B. | hydraulically |
| C. | pneumatically |
| D. | none of these |
| Answer» B. hydraulically | |
| 1511. |
In vehicles with tilt steering, the steering column is pivoted in |
| A. | upper bracket |
| B. | lower bracket |
| C. | tilt bracket |
| D. | steering yoke joint |
| Answer» C. tilt bracket | |
| 1512. |
During suction stroke, the inside pressure of cylinder is |
| A. | more than the atmospheric pressure |
| B. | less than the atmospheric pressure |
| C. | equal to the atmospheric pressure |
| D. | none of these |
| Answer» C. equal to the atmospheric pressure | |
| 1513. |
The tyre rotation is generally done at |
| A. | 1000 km |
| B. | 4000 km |
| C. | 6000 km |
| D. | 10000 km |
| Answer» E. | |
| 1514. |
The auto ignition in a spark ignition engine means |
| A. | automatic ignition of the charge at the end of compression |
| B. | ignition induced by the passage of a spark |
| C. | ignition of the charge before the passage of flame front |
| D. | ignition induced to supplement the process of normal combustion |
| Answer» D. ignition induced to supplement the process of normal combustion | |
| 1515. |
An under-inflated tyre will wear the tread most |
| A. | near the centre |
| B. | near the edges |
| C. | in the lateral direction |
| D. | in the cross direction |
| Answer» C. in the lateral direction | |
| 1516. |
The function of a proportioning control valve (PCV) in a brake system is to |
| A. | ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation |
| B. | reduce the brake fluid pressure when the brakes approach their lockup point |
| C. | cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level |
| D. | cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level. |
| Answer» E. | |
| 1517. |
The lubrication oil flow in an engine is in the order as |
| A. | oil strainer - oil pump - relief valve - oil filter - cylinder block - cylinder head - oil pan |
| B. | oil pump - oil strainer - relief valve - oil filter - cylinder block - cylinder head - oil pan |
| C. | oil strainer - oil filter - relief valve - oil pump - cylinder block - cylinder head - oil pan |
| D. | oil strainer - oil pump - relief valve - oil filter - cylinder head - cylinder block - oil pan |
| Answer» B. oil pump - oil strainer - relief valve - oil filter - cylinder block - cylinder head - oil pan | |
| 1518. |
Two general types of tyres are |
| A. | tube type and tubeless |
| B. | solid and tubeless |
| C. | air and pneumatic |
| D. | split-rim and drop centre |
| Answer» B. solid and tubeless | |
| 1519. |
The function of an oil control orifice is that it |
| A. | returns cylinder head lubricating oil to the oil pan at high speed |
| B. | turns oil into fine mist for spray lubrication |
| C. | regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes |
| D. | removes impurities from cylinder head lubricating oil |
| Answer» D. removes impurities from cylinder head lubricating oil | |
| 1520. |
Which of the following parameter can be adjusted by modifying the tie-rod attachment length ? |
| A. | Camber |
| B. | Caster |
| C. | Toe |
| D. | Steering gear ratio |
| Answer» D. Steering gear ratio | |
| 1521. |
The advantage of having a tandem master cylinder arrangement in automobiles is that it |
| A. | enhances safety by serving two independent lines in a divided-line brake circuit |
| B. | enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss |
| C. | supplies equal fluid pressure to each line of a divided-line brake circuit, thereby preventing the brakes from dragging on one side |
| D. | boosts the brake fluid pressure to reduce the force required to depress the brake pedal |
| Answer» B. enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss | |
| 1522. |
In petrol engines, during suction stroke, __________ is drawn in the cylinder |
| A. | air and fuel |
| B. | only fuel |
| C. | only air |
| D. | none of these |
| Answer» B. only fuel | |
| 1523. |
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 | |
| 1524. |
The main feature of MacPherson strut suspension is that |
| A. | the vertical size of the suspension can be made more compact |
| B. | non-vertical external forces are supported by the suspension arms |
| C. | the unsprung mass in lighter |
| D. | the assembly is slightly more complicated in design |
| Answer» C. the unsprung mass in lighter | |
| 1525. |
The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crank-case, is known as |
| A. | cleaning |
| B. | priming |
| C. | scavenging |
| D. | detonation |
| Answer» D. detonation | |
| 1526. |
The purpose of a balancer shaft is to |
| A. | balance the timing in the movement of the two groups of pistons |
| B. | increase inertia force of the rotating crankshaft |
| C. | reduce vibrations caused by the crankshaft rotation |
| D. | adjust the timing of the intake and exhaust valve openings |
| Answer» D. adjust the timing of the intake and exhaust valve openings | |
| 1527. |
Tachometer in a vehicle measures |
| A. | speed |
| B. | distance |
| C. | engine r.p.m. |
| D. | fuel consumption |
| Answer» D. fuel consumption | |
| 1528. |
One effect of detonation is |
| A. | delay in ignition |
| B. | loss of power |
| C. | overheating of engine |
| D. | overcooling of engine |
| Answer» C. overheating of engine | |
| 1529. |
The self ignition temperature of Diesel as compared to petrol is |
| A. | higher |
| B. | lower |
| C. | same |
| D. | depends on fuel quality |
| Answer» C. same | |
| 1530. |
With the increase of battery temperature, the specific gravity of electrolyte |
| A. | increases |
| B. | decreases |
| C. | reamains the same |
| D. | none of these |
| Answer» C. reamains the same | |
| 1531. |
The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as |
| A. | supercharging |
| B. | auto-ignition |
| C. | scavenging |
| D. | detonation |
| Answer» B. auto-ignition | |
| 1532. |
In aluminium cylinder blocks, the cylinder liners are made of |
| A. | aluminium |
| B. | ceramic |
| C. | brass |
| D. | cast iron |
| Answer» E. | |
| 1533. |
The characteristic that is enhanced by the honing of cylinder sleeves inner surface is |
| A. | cooling efficiency |
| B. | resistance to wear |
| C. | lubrication performance |
| D. | none of these |
| Answer» D. none of these | |
| 1534. |
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it |
| A. | improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion |
| B. | allows the steering wheel to be turned by a greater amount when steering |
| C. | makes the steering more responsive |
| D. | reduces the amount of kick-back for large steering angles |
| Answer» B. allows the steering wheel to be turned by a greater amount when steering | |
| 1535. |
The starter motor is driven by |
| A. | chain drive |
| B. | gear drive |
| C. | flat belt drive |
| D. | V-belt drive |
| Answer» C. flat belt drive | |
| 1536. |
The correct flow of power through the drive train is |
| A. | engine - driveshafts - clutch - mainshaft - countershaft - final driven gear - wheels |
| B. | engine - clutch - mainshaft - countershaft - final driven gear - driveshafts - wheels |
| C. | engine - clutch - countershaft - mainshaft - final driven gear - driveshafts - wheels |
| D. | engine - mainshaft - countershaft - clutch - final driven gear - driveshafts - wheels |
| Answer» C. engine - clutch - countershaft - mainshaft - final driven gear - driveshafts - wheels | |
| 1537. |
The octane number of compressed natural gas (CNG) is |
| A. | 90 |
| B. | 100 |
| C. | 110 |
| D. | 120 |
| Answer» E. | |
| 1538. |
The compression ratio for Diesel engines usually lies in the range of |
| A. | 6-10 |
| B. | 10-15 |
| C. | 15-25 |
| D. | 25-40 |
| Answer» D. 25-40 | |
| 1539. |
The function of antilock brake system (ABS) is that is |
| A. | reduces the stopping distance |
| B. | minimises the brake fade |
| C. | maintains directional control during braking by preventing the wheels from locking |
| D. | prevents nose dives during braking and thereby postpones locking of the wheels |
| Answer» D. prevents nose dives during braking and thereby postpones locking of the wheels | |
| 1540. |
In a petrol engine, the high voltage for spark plug is in the order of |
| A. | 1000 volts |
| B. | 2000 volts |
| C. | 11 kilovolts |
| D. | 22 kilovolts |
| Answer» E. | |
| 1541. |
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 | |
| 1542. |
The boiling point of Diesel fuel is in the range of |
| A. | 70 C to 100 C |
| B. | 100 C to 120 C |
| C. | 120 C to 180 C |
| D. | 180 C to 360 C |
| Answer» E. | |
| 1543. |
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 | |
| 1544. |
The specific gravity of Diesel is about |
| A. | 0.65 |
| B. | 0.75 |
| C. | 0.85 |
| D. | 0.95 |
| Answer» D. 0.95 | |
| 1545. |
The service brakes employed in cars are generally operated |
| A. | mechanically |
| B. | hydraulically |
| C. | pneumatically |
| D. | none of these |
| Answer» C. pneumatically | |
| 1546. |
The smooth shift mechanism of an automatic transmission reduces the degree of shock at shifting of gears. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 1547. |
The seat belt will move out smoothly when pulled out slowly, but it will lock when pulled quickly. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 1548. |
The frequency of flashing of light per minute in a direction (side turn) indicator is about |
| A. | 9 |
| B. | 90 |
| C. | 900 |
| D. | 9000 |
| Answer» C. 900 | |
| 1549. |
Thinner is added to the paint in order to |
| A. | make pigments and resin mix easily |
| B. | make paint film hard |
| C. | optimise its viscosity |
| D. | none of these |
| Answer» D. none of these | |
| 1550. |
The ease with which petrol vapourizes is called its |
| A. | oxidation |
| B. | octane number |
| C. | volatility |
| D. | cetane number |
| Answer» D. cetane number | |