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Posts filed under Automobile Engineering
1.
In a differential with a gear ratio of 4 : 1 the drive pinion would revolve four times to cause the ring gear to rotate
2.
More often, the condition that draws attention to trouble in the differential is
3.
To correct heavy toe contact on ring gear teeth, move the
4.
On a straight road, the ring gear
5.
In a passenger car a typical arrangement of braking with drum brakes will be
6.
Brake efficiency is a term which denotes
7.
The most widely used brakes are operated
8.
As a rule when comparing the front and rear wheel cylinder pistons it will be found that the pistons in the front wheel cylinders are
9.
The type of braking system referred to as power brake, makes use of
10.
In the vacuum suspended system, the brakes are applied when
11.
In the atmospheric suspended system the brakes are applied when
12.
In a vacuum suspended unit, when the brakes are on, the piston or diaphragm has on both sides of it
13.
The function of the relay valve in a compressed air brake system is to
14.
In the hydraulic braking system, the piston in the master cylinder is connected by mechanical linkage to the
15.
In the hydraulic braking system, the movement of the pistons in the wheel cylinder is transmitted to the brake shoes by
16.
Two general types of vacuum assisted power brakes are
17.
In the integral type of power brake, the diaphragm acts directly on the hydraulic piston in the
18.
In the multiplier type of brake, the diaphragm acts directly on the hydraulic piston in the
19.
In the power assisted type of brake the bellows applies force to the master cylinder piston
20.
In the air brake, air pressure is supplied by
21.
Power brakes in general operate making use of the pressure differential between the vacuum from the intake manifold and
22.
In the multiplier power brake system, movement of the brake pedal
23.
In the power assisted brake system, movement of the brake pedal
24.
The metal used for the brake drum is
25.
Bleeding of brakes means
26.
In trucks the system of wheel braking employed is
27.
In jeeps we use
28.
In a vacuum type servo-assisted brake system, vacuum is available in ........ is made use of
29.
The approximate ratio of effort applied : effort available from servo system is
30.
Due to continuous running on a hot day the temperature of the braking fluid will increase, hence some braking torque is applied on brake shoes, to avoid this a small quantity of fluid will be allowed to escape into the master cylinder through
31.
As the load on the vehicle increase it demands
32.
In the hydraulic brake system, the movement of a piston in the master cylinder produces hydraulic pressure which causes movement of
33.
In the case of brake linings saturants and bonding materials are used to
34.
Brake lining area required for shoe brakes for trucks is mainly based on
35.
The working fluid normally used in hydraulic brake systems is
36.
Movement of the brake pedal forces brake fluid from the master brake cylinder through brake lines and into the
37.
During braking the brake shoe is moved outward to press against the
38.
In the hydraulic brake system, movement of a piston in the master cylinder produces hydraulic pressure which causes movement of the
39.
The radius of a pneumatic tyre is
40.
For a through inspection a tyre should be
41.
If a tube of large size than required is installed in a tyre then
42.
Of the four tyres on a car, the one that wears most is the
43.
To equalize tyre wear, it is suggested that tyres be rotated from one wheel to another every
44.
The distance between dual tyres of vehicles is to be correctly spaced to
45.
When an automobile takes a tum to avoid the skidding and over turning
46.
Wheels must be balanced
47.
Weight can be attached to wheel rim to correct
48.
Toe out on turns
49.
Caster is defined as the inclination of
50.
The Ackermann steering layout
1.
The purpose of the fluid coupling is to act as a
2.
The distance between adjacent meshing teeth of mating gears is called
3.
In the fluid coupling, speed reduction means torque reduction. But in the torque converter, speed reduction means
4.
The fluid coupling consists essentially of two
5.
The number of planetary gear sets in a hydromatic transmission system is
6.
When coming out of overdrive, the overdrive electric control momentarily
7.
In order for power to flow through the fluid coupling from the engine to car wheels, the driving member must be turning
8.
In the overdrive, there is an arrangement whereby it is possible to lock stationary the
9.
The coil spring clutch may use from
10.
If the differential noise is present only when the car is rounding a curve the trouble would be due to
11.
To correct heavy flank contact on the ring gear teeth
12.
The ring gear is adjusted in the differential by use of
13.
The axle bevel gears in the differential mesh with the
14.
The ring gear is mounted on the
15.
The outer end of the axle is supported by a
16.
When the axle is pulled the bearing
17.
In the differential the ring gear is bolted to the
18.
The slip joint permits a change in the
19.
The centre part of a typical universal joint is called the
20.
To take care of the difference in the driving angle as rear axle moves up and down, the propeller shaft has one or more
21.
In the modern differential, the type of gearing used for the drive pinion and ring gear is
22.
The propeller shaft has one or more
23.
There is a tendency for the rear axle housing to rotate in a direction opposite to the direction of the rear wheels and this effect is due to
24.
In the slip joint, slippage occurs between internally and externally mated
25.
If a noise is present in a differential only when the car moves past a curve, the chances are that the trouble is due to some fault in
26.
In the differential to correct for heavy face contact on the drive gear teeth, it is necessary to move the
27.
In the differential, to correct for heavy flank contact on the drive gear teeth, it is necessary to move the
28.
In the differential, to correct for heavy heel contact on the drive gear teeth, it is necessary to move the
29.
In the differential, to correct for heavy toe contact on the drive gear teeth, it is necessary to move the
30.
The drive gear in the differential is adjusted by use of
31.
The type of rear axle in which the wheel end is supported by bearings inside the axle housing is
32.
The two basic types of axle are
33.
In the differential, the ring gear is bolted to the
34.
In the Hotchkiss drive, the rear end torque is absorbed by the
35.
The universal joint permits a change in the
36.
To correct heavy heel contact on the ring gear teeth, move the
37.
Propeller shaft includes
38.
A humming noise in the differential is often caused by improper tooth contact between the
39.
Axle shaft of the three-quarter floating axle is subjected to
40.
Whirling of the propeller shafts is mainly due to
41.
In a vehicle with dual rear axle, the wheel base is measured from the
42.
The axle shaft of a semi floating rear axle is subjected to
43.
Differential mechanism at the axle is provided mainly to
44.
De Dion axle is usually
45.
Spur gear type of differential is unsuitable for passenger car applications because
46.
Floating axles are classified on the basis of
47.
Which of the following layouts is not used in motor vehicles?
48.
The most popular drive at the drive axle for the passenger car is
49.
The drive line consists of the propeller shaft with
50.
In the differential the ring gear is attached to the
1.
The free wheeling mechanism contains
2.
For each crankshaft revolution, the cam shaft revolves
3.
The overdrive is located between______.
4.
The synchronizing device used in the transmission uses
5.
The second movement of the gear shift lever produces
6.
There are two separate movements of the gear shift lever for changing the gears.The first movement selects
7.
The standard transmission has
8.
The conventional motor car has
9.
In the transmission, the reverse idler gear always mesh with
10.
In transmission reduction of speed is always used to obtain
11.
The device that produces different gear ratios in the power train is called
12.
In the automobile, the power train carries the engine power from the engine to the rear wheels. The power train includes the clutch propeller shaft, differential and
13.
In the coil spring type of clutch when the pressure plate and cover are separated, the spring pressure must be held by
14.
Parts of the clutch that should not be cleaned in solvent include the
15.
On diaphragm spring clutch, pressing down on the clutch pedal moves throw out bearing in against the
16.
As a general rule in facings on the friction disc are worn down to the rivet heads
17.
The front end of the clutch shaft is supported in a pilot bearing in the
18.
The three forward speed and the reverse transmission consists of three shafts and
19.
Synchromesh devices in the transmission synchronize the gears about to be
20.
In the transmission the counter shaft drive gear is meshed with a gear on the
21.
The fluid coupling is most efficient as drive ratio approaching to
22.
In the fluid coupling speed reduction means
23.
When the clutch is engaged, spring pressure clamps the friction disc between the pressure plate and the
24.
The free travel of the medal, or pedal lash is the amount of travel the pedal has before the throw out bearing comes up against the
25.
The automobile transmission is removed from the car by taking it out
26.
Overdrive is provided in the transmission of a vehicle to
27.
The number of gear ratios in a vehicle
28.
In the process of gear shifting in a layshaft type of gearbox
29.
A fluid coupling
30.
The main advantage of a fluid coupling is
31.
The hydrodynamic torque converter
32.
An automatic transmission works on the principle of
33.
The coil springs are located in between the pressure plate and the
34.
The clutch cover is bolted to the
35.
The friction disc is positioned between the flywheel and the
36.
There is a double faced friction disc splined to a shaft in the
37.
To prevent distortion on re-installation on the clutch cover attaching bolts should be tightened
38.
The power train transmits power from the engine to the
39.
The clutch pressure plate is mounted on the
40.
The release levers in a typical clutch pivot on
41.
If two meshing gears have 4:1 gear ratio and the smaller gear has 12 teeth, the large gear will have
42.
The two meshed gears have a gear ratio of 3:1. Every time the larger gear turns once the small gear will be to turn
43.
In the diaphragm clutch inward movement of the throw out bearing causes the diaphragm spring to
44.
The fluid coupling has maximum efficiency when driving and driven members are turning at
45.
The purpose of the guide ring in the fluid coupling is to reduce oil
46.
Synchronizing is designed to prevent gear clash when shifting into
47.
When shifting into low, a gear on the transmission main shaft is moved in to mesh with the
48.
Clutch noises are usually most noticeable when the engine is
49.
Clashing of gears when shifting into high could result from
50.
Transmission noise in neutral could result from
1.
The brake pipe in hydraulic brakes is made up of
2.
The ease with which a liquid vapourises is called its
3.
As the battery is discharged, the active materials in both negative and positive plates are changed to
4.
The pipes used in diesel engines from pump to nozzle is made up of
5.
Two types of antifreeze are
6.
The substance added to the oil which helps to keep the engine clean is called
7.
One advantage of using an exhaust valve as insert is that the ring
8.
The crankshafts are usually forged to get
9.
The number of parallel paths in a lap winding of the armature of a DC generator is equal to
10.
The unsprung mass in a vehicle system is mainly composed of
11.
Parts of the shock absorber include
12.
The automobile chassis consists of the engine, frame, power train, wheels, steering and ..............
13.
The frame provides support for the engine body, power train members and .......
14.
The engine is usually supported by the frame
15.
The central part of the axle beam is offset downwards to
16.
X - member of a car frame ensures improved
17.
The purpose of the shock absorbers is to
18.
The rear end suspension arrangement in which rear end torque is absorbed by the spring is called the
19.
On rebound, in the direct acting shock absorber, fluid flows out of the upper part of the cylinder and also ...........
20.
The weight or pressure required to deflect a spring in mm is called the spring
21.
Leaf spring for vehicles are nipped to
22.
The device that permits variation in the distance between the spring eyes of a leaf spring as the spring flexes is called
23.
When the direct acting shock absorber is compressed or telescoped fluid passes through the piston orifices into the upper part of the cylinder and also
24.
The clips placed at intervals along some leaf spring to prevent spring leaf separation on rebound, are called
25.
In a vehicle with torque tube drive, the rear suspension spring
26.
With a leaf spring type of suspension, interference between steering and suspension system can be reduced to minimum when
27.
The laminated spring, which is in common use, is of the type
28.
A double acting shock absorber usually has
29.
Hotchkiss drive is the name associated with
30.
The part of the vehicle holds the passengers and the cargo to be transported is known as
31.
The power train includes the clutch, propeller shaft, differential and ................
32.
In gear systems, speed reduction means torque
33.
Clutch slippage while clutch is engaged is particularly noticeable
34.
Clutch chattering or grabbing is noticeable
35.
Clutch noises are usually most noticeable when the engine is
36.
Synchronizing devices are designed to prevent gear clash when shifting into
37.
The overdrive is located between the
38.
The sun gear in the planetary gear system meshes with the
39.
Pressing down on clutch pedal causes the release levers to move the pressure plate away from
40.
In coil spring type of clutch the cover is separated by
41.
In the high gear in the transmission, main shaft turns at the same speed as the
42.
The purpose of the fluid coupling is to act as a
43.
In the fluid coupling oil passes from the driving to the
44.
Braking is produced by the frictional effect between the brake drum and the
45.
The drive pinion in the over running clutch is moved into mesh for cranking action by
46.
The function of a torque converter or fluid converter is similar to that of a
47.
In the transmission system, the provision of slip joints allows a change in the
48.
In the torque converter, oil leaving the turbine is changed into a helping direction by curved
49.
In a fluid coupling the greater the difference between the speeds of the driving and the driven member
50.
The ratio between the speed of the camshaft and the speed of the crankshaft is
1.
The radiator tubes are manufactured by using
2.
If we know the engine speed, bore, stroke, number of cylinders and m.e.p in the cylinders, we can calculate
3.
Knowing the IHP and FHP of an engine, we can calculate
4.
Which one of the following is not a trade name of tractor in India
5.
The ratio between the power output of an engine and the energy in the fuel burned to produce that power is called
6.
The air volume in the cylinder with the piston at B.D.C divided by the clearance volume is called
7.
The power used in overcoming friction in the engine is called
8.
The average pressure during the power stroke minus the average pressure during the intake, compression and exhaust strokes is called
9.
IHP minus FHP equals
10.
Engine torque is highest at
11.
BHP divided by IHP is
12.
The percentage of the energy in the petrol burnt in the engine which is actually utilized in propelling the car is as little as
13.
In the diesel engine, the compression ratio is as high as
14.
The device for smoothing out the power impulses from the engine is called the
15.
The amount of air fuel mixture taken in by the engine on the suction stroke is a measure of the engine's
16.
The size of an engine cylinder is referred to in terms of its
17.
In an operating engine, the hottest part of the piston is the
18.
In normal operation the part of the exhaust valve that gets the hottest is
19.
The power developed inside the engine cylinder is called
20.
The ratio of the cylinder volume at BDC and the clearance volume is called
21.
As a rule when comparing the front and rear wheel cylinder pistons, it will be found that the pistons in the front wheel cylinders are
22.
Twisting and untwisting of the crankshaft is called
23.
The rotating effect of the connecting rod on the connecting rod bearing produces
24.
Important bearing characteristics include
25.
In the engine there must be relative motion between the piston and the connecting rod
26.
Two of the three connecting rod bearing loads that increase as engine speeds increase are
27.
When different forces act at angles on connecting rod bearing, the combining of these forces produces a
28.
The active material in a charged negative plate is
29.
The tree general types of friction bearings are
30.
Petrol and Gasoline is called a hydrocarbon because it consists essentially of
31.
Almost all bearing used in automotive engines are
32.
The brake shoes are curved to conform to the inner diameter of the
33.
It is cheaper if we use gaskets of
34.
With an increase in temperature the resistance of carbon is
35.
When petrol burns completely, two of the compounds that are formed are
36.
Due to heat of combustion, with increase in temperature the molecules
37.
When air is heated, it
38.
Changing position of an object against an opposing force is called
39.
A liquid that boils at a relatively high temperature is said to have
40.
The ease with which a liquid changes to a vapour is called its
41.
The pump part that rotates and causes water circulation between the radiator and engine is called
42.
The bearing having the least friction is the
43.
Conformability of an engine bearing is
44.
The most commonly used material for tyre tubes is
45.
When the plates of battery cell are made larger in size, we get increased .......?
46.
When preparing electrolyte, it is important to remember that
47.
Aluminium alloy pistons are preferred because
48.
The material used for the piston of modern passenger cars are
49.
Piston compression rings are manufactured by
50.
Gudgeon pins or piston pins are made by
