Tread distortion is least on Tread distortion is least on mcq is given below:

Most Most Important Automobile Engineering Objective Questions & Answers PDF Download

Q. Tread distortion is least on

(a) radial ply tyres
(b) cross ply tyres
(c) cross ply belted tyres
(d) none of these

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Ans:  (a) radial ply tyres  

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The brake efficiency of a new vehicle is about 
Tread distortion is least on
During braking the push rod directly operates
The inner end of axle shaft is splined to the
In case of a four-wheel driven vehicle 
Air brakes are mostly used in case of 
In a simple planetary gear set, the output member to increase torque is always the
The maximum value of axial force at the clutch which a driver can apply while driving, without getting fatigued is approximately
The ratio of the distributor shaft and the crankshaft speed is 
Most popular manual steering gear for cars today is 
The frame may get distorted to a parallelogram shape due to
The function of a shackle with a leaf spring is to 
The smaller gears inside the differential casing are 
 In drum type brakes the fluid on releasing, returns to the master cylinder due to the action of the piston spring and
On suspended vacuum brakes, there is vacuum on both sides of the piston during
The two quantities used for specifying an electrical wire are 
The purpose of transmission in an automobile is
The example of a hatchback is 
The basic automobile structure consists of the suspension system, axles, wheels and 
Number of forward gear box speeds in Indian cars is usually 
Diagonally-split hydraulic brakes are used in 
By using synchronizing device, the two involved adjacent gears have their speeds
Firing order of a 6-eylinder in-line engine is usually
Rack and pinion type steering gear is used in 
 Permanent speed reduction ratio of final drive of cars is about 
For measuring clearance between two flat surfaces the tool used is 
For speeding up the tightening work we have to use
If proportioning valve is not working 
Intake port in the master cylinder allows brake fluid to flow 
The brakes employed in cars are usually operated 
The example of a saloon is
The most effective section against bending is
The maximum intensity of pressure which the clutch facing can withstand without being damaged is about
A clutch is usually designed to transmit maximum torque which is 
 The parts of the cover assembly that hold the pressure plate against the clutch plate are the 
The inertia of the rotating parts of the clutch should be
In a torque converter maximum torque multiplication occurs at 
The function of a universal joint is to allow the propeller shaft to 
A two piece propeller shaft requires 
Central portion of a propeller shaft is made from a
 The adjustment for backlash in a differential is provided between 
The component of the torque converter that allows multiplication of torque is the
The component of the torque converter that drives the oil is the
Free pedal play in car clutches is about
Increase in torque in a vehicle is obtained by
Two advantages of using helical gears rather than spur gears in a transmission are 
Clutch facings arc usually attached to the plate by 
Cushioning springs in clutch plate are meant to reduce
The clutch is located between the transmission and the 
Lateral bending of the frame side members may be caused on account of 
Weight of the vehicle produces in the side members of the Frame 
The number of points at which the engine-clutch-gear box unit is supported on the chassis frame is 
The cooling system of automobile engine most simple when the engine is placed at the
The purpose of gear box in an automobile is to 
Due to weight transfer, the ratio of braking effect at the front and at the rear wheels should be
Compared to framed construction, the frame less construction of automobiles is economical 
 In a clutch will coil springs, the wear of the clutch lacing will cause the clamping load to
In a simple epicyclic gear set, the output member to increase torque in reverse is always
The central gear of an epicyclic gear set is called a
The maximum torque multiplication ratio in a torque converter is about 
The component or me torque converter that redirects the flow of oil to impeller is
The blades in a torque converter have a shape which is
Critical whirling speed of a shaft is increased by 
The thrust bearing should come into contact with the release levers when the
The purpose of tyre sipes is to 
On car having rack and pinion steering, the gear rack is attached to 
Heat transfer by radiation is encountered least in
A asserts that intake valves are cooled while they are open. However. B states that exhaust valves are heated while they are open. Who is right?
A chassis dynamometer measures the vehicle power at the 
A discharged lead-acid battery has on its plates 
A dish in the piston head is employed to
A fully-charged 6 cell automotive battery should indicate 
A glow plug is
A maintenance-free battery
A pressure cap contains a 
A pulse generator consists of a
A says that rocker arms reverse reciprocating motion while B says that rocker arms convert rotating motion to reciprocating motion. Who is right? 
A semi-conductor is a material with 
A single jet carburettor tends to supply richer mixture during 
A spark may be fouled by 
A spark plug with a black centre insulator indicates
A thermister is used in an alternator regulator to 
A transistor consists of a base
A transistor is controlled by the current at 
A zener diode is used for
Aluminized valves are never ground they have to be replaced because 
Ami-dieseling device is incorporated in the carburettor used in the 
An alternator frame is made of
An effective method of prevention of detonation is the
An indication of ignition quality of a diesel fuel is given by
Aneroid is a 
Another name for the steering link rod is 
Any short-circuit in the armature winding may be tested with a
Apart from hydrocarbons, the main Pollutants in the engine exhaust are
At very low temperatures the ice tends to form in the carburettor in the 
Automotive starting motors are
Battery electrolyte consists of approximately (by volume)
Before drilling a hole, its center should be marked with a 
Best spanner for automobile work is the
Brake fade is
Brake lining consists mainly of
Brake thermal efficiency for S.I. engines usually varies between
Car clutch is usually operated 
Catalytic converter for controlling exhaust emission is used in engine of 
CO in the exhaust of a car engine should not be more than
Compare to the life of a spark plug of two stroke engine, the spark plug life of a four-stroke engine is approximately
Component of the wheel cylinder which seals the brake fluid is
Compression ratio of 22.4 is used in the engine of 
Compression rings are generally made of 
Connecting rod connects the crankshaft and the 
Contact breaker gap should be set 
Contact breaker points are generally made of
Contact breaker points are opened by the cam and closed by the
Continuity in the field windings can be tested with a
Coolant pumps are of 
Cooling fans are driven by 
Cornering force divided by slip angle is called 
Current will flow through a diode when it is connected 
Dion axle is employed in
Disc brakes on all four wheels is used in
Doubling the cylinder diameter of an engine could give power output, which is ‘x’ times the original value, where ‘x’ is 
During which week of pregnancy for the first time breast milk can be squeezed? 
Each time a joint is assembled, it is recommended to replace
EGR system is employed for controlling emissions of 
Electric brakes are commonly used on 
Electronic fuel injection system system is used in engine of
End play of gears of an oil pump may be checked by using
Engine indicators not having any inertia effects are
Engine overheating may result due to
Excessive contact breaker gap results in
Exhaust valve face angle is generally 
Five cylinder in-line engine is used in
Flat bottomed inlet manifolds are commonly used in car engine to
For aiming the headlights, the distance between the headlights and the screen should be 
For checking the alignment of the crankshaft, the best method is to place it
For identification, the colour of tail lights in a car is
For tightening cylinder head bolls we should prefer to use
From the engine indicator diagram, we obtain
From the oil pump the oil directly to
Fuel pump outlet pressure should be approximately
Gear reduction between the starting motor and the flywheel is about 
Heavy duty oil bath type air cleaner is/was used in the engine of 
Heel and toe wear in tyres is caused by
How many times in a minute does each valve on a four stroke engine running at 2000 RPM open and close?
Hypoid gear require special lubricant casing are
Ignition timing can be adjusted by a
In a d.c. generator magnetic field is produced in the
In a head lamp the metal shield is placed below the 
In a single jet carburettor the mixture tends to become richer
In a six-cylinder car engine the angle between the successive crankthrow is
In a six-cylinder engine, the power impulse occurs after ‘x’ degrees of crankshaft rotation, where ‘x’ is
In a starter motor the field windings are wound around
In a three-way converter, the first converter controls
In an alternator the magnetic field is produced in the
In autothermic pistons steel inserts arc used to
In case of a wire wheel the vehicle weight is supported by the wires in 
In disc brakes, pad-to-disc adjustment is provided by 
In ease of engines backfiring, the PCV valve
In Maruti car the brakes used are
In modern vehicles, the headlight dimming switch is mounted on the 
In some diesel engines injection pressures can reach as high as
In the recirculating ball type steering gear, the ball travel between the ball nut and the
Independent suspension on all four wheels is used in 
Inertia type drives are commonly employed in
It is common for the diesel engine to emit excessive smoke during
Lean air-fuel mixture is required for 
Maximum allowable hydrocarbons in the car emission are approximately
Maximum combustion pressure in a car petrol engine is about 
Maximum oil pressure in the lubrication system is controlled by
Maximum permissible bearing clearance for the camshaft is usually
Maximum permissible ovality in a cylinder is usually 
Microprocessor-controlled ignition system is used in engine of
Most anti-skid devices are employed on
Most commonly used dynamometer on account of its simplicity of construction is the
Most commonly used lubricants in automobiles are the 
Most commonly used lubricants in automobiles are the
Most commonly used valve-actuating mechanism in modem cars is
Most difficult gasket sealing problem occurs at the 
N-type semi-conductor material is obtained by doping with 
Octane number of Indian lead-free petrol is
On leaving the engine the coolant goes to 
On the compression stroke the rings are pressed against
On the front end of a crankshaft is mounted
On the rear end of a crankshaft mounted 
One effect of detonation is 
One purpose of a recirculating ball type steering gear is to reduce the 
Out of round brake drums cause the tyres to wear
Panhard rod is used to absorb the 
Percentage of fuel energy lost to the cylinder walls in an automobile engine is approximately
Piston pins on some engines are offset to the 
Salisbury type rear axle casing is also known as 
Secondary filter in a diesel engine is
Sequence of coolant circulation is: 
Small holes in the pump body provide a vent for
Spark plug having white insulator tip indicates 
Spring eyes in case of cars are usually lined with
The ‘dwell’ is 
The air fuel ratio required for the efficient operation of a three-way converter is approximated
The amount of fuel delivered by the injector depends upon the
The angle between the cylinder axes and the crankshaft centre line in an engine is 
The approximate oil pressure in the lubrication system in modern cars is 
The approximate oil pressure in the lubrication system in modern cars is 
The bearing clearance is never measured with a
The best hydrocarbons from detonation viewpoint are
The calorific value of alcohol is
The calorific value of gasoline is about
The camshaft controls
The camshaft drive which does not require lubrication is 
The capacity of a battery is determined by the number of plates per cell and 
The capacity of an automotive engine consider is approximately 
The carbon from the cylinder head is removed with
The carbon-ceramic brakes are standard with effect from 2008, on all
The carburettor provides the correct quality of air-fuel mixture during
The carburettors in which air-fuel mixture is controlled automatically by a computer are called the
The catalyst used in the converter for oxidising HC and CO is
The catalyst used in the reduction converter is
The centrifugal advance machine provides ignition advance proportional to
The charging voltage at the start of the engine is ……………….than when the engine is running on load. 
The cheapest yet reasonably precise gasoline injection system is the
The choke is usually closed when the engine is 
The clutch used in cars in usually
The colour of negative plate of a lead-acid battery is 
The colour of positive plate of a lead-acid battery is
The commonly used material of insulator of spark plug is 
The components of secondary ignition circuit include the secondary winding of ignition coil, distributor rotor, distributor cap and 
The compression ratio in an automotive diesel engine is usually 
The contact breaker gap is set most accurate by means of a
The counterweights on a crankshaft are located opposite the 
The cranking compression pressure in a diesel engine is about 
The crankshaft bending should not generally exceed
The cylinder bore oversize for reboring is calculated on the basis of 
The cylinder bores of aluminium alloy cylinder blocks arc usually plated with 
The cylinder head nuts should betightened to a torque of about  
The cylinder temperature after compression in a diesel engine is approximately 
The drive for the mechanical fuel pump is taken from the 
The dwell angle on a six- cylinder engine compared to a four-cylinder engine is
The engine requires overhauling in case of
The engine valves are closed by
The example of a ‘variable venturi’ type carburettor is the
The exhaust valve usually starts opening 
The fan in the Maruti car is controlled 
The first Indian car to use disc brakes was 
The frequency of a vibrating contact type regulator for d.c. generator is 
The friction that occurs between the layers of oil in an oil film is called 
The fuel feed pump in a diesel engine is mounted 
The fuel injection timing in a distributor type pump is controlled by 
The function of a stabilizer in an automobile is to decrease the tendency to 
The function of charcoal granules is to absorb 
The function of quench area in a wedge-shaped combustion chamber is to
The hand brake usually operates on 
The ignition coil in an electronic ignition system is triggered on and off by means of a 
The ignition temperature of diesel fuel is about
The largest diameter of a camground piston is 
The liquid-vapour separator is located near the 
The lubrication system in all modern cars has 
The lubrication system in all modern cars has
The main purpose of the diverter valve in the air injection system is to
The material used for inlet valve is usually 
The maximum disc runout allowed on the vehicle is generally
The minimum number of compression rings in an automotive engine is 
The most accurate dynamometer is the 
The most accurate petrol injection system is the
The most accurate timer for electronic ignition system is the
The most common lubrication system in automobile is the
The most common lubrication system in automobile is the
The most commonly used car heater is the
The most commonly used valve in an automobile engine is
The most important characteristic of a lubricating oil is its 
The most important characteristic of a lubricating oil is its
The most widely used fuel supply system for car engines is the 
The negative plate of a lead-acid battery has 
The number of ignition coils in a distributorless ignition system for a 6-cylinder engine is 
The number of main bearings in a 4-cylinder car engine is usually
The number of positive plates in a battery cell is 
The number of windings in the stator of an alternator is 
The number of windings in the stator of an alternator is
The object of air conditioning a car is to control therein the
The octane number of iso-octane is
The oil pan in an engine may be made of 
The opening pressure of hole type nozzles varies from 
The opening pressure of pintle type nozzles varies from 
The output of an alternator is controlled by 
The PCV valve is located between the 
The permissible mixing of cross-ply and radial-ply automobile tyres allows
The piston pins in the modern automobile engines are usually 
The piston-skirt clearance at room temperature is about 
The position of the PCV valve plunger at idle speed is 
The positive plate of a lead-acid battery has 
The primary function of lubrication is to
The primary function of lubrication is to 
The primary purpose of a ring expander is to 
The primary winding of ignition coil consists of 
The process in which hydrocarbons are decomposed into smaller hydrocarbons is called 
The process of changing the molecular structure of the straight-run gasolines is called
The pump for the air injection system is of 
The purpose of piston rings is to control
The purpose of the fan is to 
The purpose of the thermostat is to keep the engine 
The push rod is located between the 
The radiator core is made of 
The ratio of main journal diameter and thecylinder bore in a ear engine is approximately
The side force sustained by the wheel during cornering divided by the slip angle is called 
The spark occurs when the 
The spray of water from a car washer is at a pressure of about
The stalling torques of starting motors for cars vary between 
The steering ratio for manual steering of cars is approximately
The stem clearance in the valve guide is checked by means of a
The term ‘ply rating’ with reference to a tyre refers to the
The thermostat valve starts to open at about 
The three components of primary ignition circuit are 
The three units contained in a regulator for automobile d.c. generator are 
The throttle valve controls the supply of 
The tool employed to measure the shaft run out is the 
The turning circle for a car is approximately 
The type of gear axle used on trucks is 
The type of reflector used for automobile head lamp is 
The type of steering gear used in a Maruti 800 car is
The type of wheel which cannot be used with a tubeless tyre is
The type of wheels preferred in sports cars are
The units of spring scale for the engine indicator are 
The uppermost ring on a piston is usually plated with 
The use of tetraethyl lead in gasolines is being gradually discontinued because 
The valves have to be replaced if the metal to be removed lor smoothening their end surfaces is more than 
The vehicle ride will be comfortable if 
The venturi in the carburettor causes the 
The vibration damper on a crankshaft reduces the 
The warpage of cylinder head is checked with a
The width of the valve seat should not be kept more than 
To increase output voltage, battery cells are connected in 
Trafficators are light signals used for 
Tread distortion is least on 
Two types of semi-conductors are 
V-12 engine is used in 
V-eight engine was employed in
Vacuum advance mechanism operate at 
Valve overlap occurs between 
Valve-actuating mechanism with two overhead camshafts is employed in the engine of 
When the choke is applied the fuel come out from the 
When the rear wheels are jacked up and gears are in neutral, turning one rear wheel forward in a rear drive vehicle will cause the other wheel to 
While lapping a valve, the lapping compound is applied to its 
With the increase of battery temperature, the specific gravity of electrolyte 

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