Mechanical Engineering: Automobile Engineering Online Test

How many types of automobile tyres are there?
Two
Three
Four
Nothing specific
The maruti-800 car employs
Disc brakes only
Drum brakes only
Disc brakes on front and drum brakes on rear
Drum brakes on front and disc brakes on rear
Which aspect is not valid in respect of disc brakes when compared to drum brakes?
Light in weight
Complexity of design
More uniform wear of friction pads
Better anti-fading characteristics
What material is a brake lining usually made of?
Asbestos
Leather
Cork
Fabric
The brake bleeding system serves to free the system from
Air
Excess pressure
Excess fluid
Vacuum
Even when the brakes are in the released polition, a small pressure of about ………..is maintained in the pipe lines
25 kPa
50 kPa
75 kPa
100 kPa
The engine vacuum brakes are generally used on
Buses
Jeeps
Tractors
Trains
What types of brakes are usually employed on cars?
Mechanical
Pneumatic
Hydraulic
Vacuum
Master cylinder in an automobile is associated with
Steering
Braking
Lubrication
Suspension
The steering ratio for manual steering of cars is approximately
5
8
12
20
Most popular manual steering gear for cars is
Cam and roller type
Worm and wheel type
Rack and pinion type
Worm and nut type
What should be the approximate amount of toe-in in a car?
1 mm
3 mm
5 mm
8 mm
Identify the mechanism which is almost universally used for steering purpose
Hart’s mechanism
Ackermann mechanism
Scott russel’s mechanism
Watt’s mechanism
Combined angle or included angle is equal to
Camber plus castor
Camber plus king pin inclination
Castor plus steering axis inclination
Camber plus slip angle
The steering axis inclination (king pin inclination or king pin rake) generally lies in the range
Less than 1 degree
Between 1 and 2 degree
Between 2 and 4 degree
Around 7 to 8 degree
Inclination of the king pin from the vertical is called
King pin rake
Castor
Camber
Slip angle
The angle between the king pin centre line (or steering axis) and the vertical in the vertical plane of the wheel is called
Castor angle
Camber
king pin inclination
Slip angle
The camber should generally lie in the range
Less than 1 degree
Between 1 and 2 degree
Between 2 and 4 degree
Around 7 to 8 degree
The tilt of the car wheels from the vertical is called
Castor
Camber
Slip angle
Wheel rake
Streering axis inclination
What is the word castor associated with?
Suspension system
Braking system
Transmission system
Front axle alignment
Stub axles
Enable the drive to the transmission to be disconnected
Enable the front wheels to be deflected for steering purposes
Allow the speed of the engine to be varied relative to that of rear wheel
Accommodate the greater relative movement of rear axle compared to gear box
The requirement of a good stearing system is
Must be accurate and easy to handle
Should require minimal effort to steer
Should provide directional stability
All
Shock absorber in an automobile is a device meant for
Energy increase
Energy release
Energy dissipation
Energy absorption
A stabilizer is used in an automobile suspension system to obviate the tendency of vehicle to
Dip
Pitch
Roll
Yaw
Automobile engines are usually designed as multicylinder engines because of
Lower fuel consumption and high efficiency
Continuity of power output even if one cylinder fails
Uniform torque output and balancing
Generate more power
For majority of low and medium powered engines, the number of cylinder are
Two
Four
Six
A single large diameter cylinder
Which automobile car engine has three cylinders?
Premier padmini
Maruti-800
Standard
Ambassador
Suggest the type of engine to be used where the overhead clearance is small
Horizontal
Vertical
Radial
V-type
Which is the false statement about a torque converter?
The blades have a curved shape
The oil is driven by the impeller unit
The stator unit redirects the flow of oil to the impeller
Maximum torque multiplication occurs at low speed
Which is not true in the context of the free wheel clutch?
Simplified gear changing at low speeds
Transmission subjected to greater wear and tear
Effective use of brakes needed to stop the vehicle on a downward slope
Appreciable saving in fuel on long downward slope
Automobile engines are usually designed as multicylinder engines because of
Lower fuel consumption and high efficiency
Continuity of power output even if one cylinder fails
Uniform torque output and balancing
Generate more power
For majority of low and medium powered engines, the number of cylinder are
Two
Four
Six
A single large diameter cylinder
Which automobile car engine has three cylinders?
Premier padmini
Maruti-800
Standard
Ambassador
Suggest the type of engine to be used where the overhead clearance is small
Horizontal
Vertical
Radial
V-type
Which aspect is not true regarding a universal joint?
The speed of the driven shaft does not remain uniform
The speed of driven shaft undergoes linear variation
The magnitude of variation in the speed of driven shaft becomes considerable for large angle of inclination
The constant velocity universal joints are much costlier and complicated in construction
Which type of gear is not used in the final drive gearing system?
Straight bevel gear
Spiral bevel gears
Spur gears
Hypoid gears
The reduction provided in the final drive in case of automobile cars is about
2:1
4:1
7:1
10:1
Which aspect is wrong regarding worm and wheel type of final drive?
Particularly useful in lighter vehicles where the final reduction is less than 5
Quite, efficient and very strong drive
Higher cost and more weight than bevel hears
The mechanical efficiency is lower than that of bevel gears for a single stage final drive
Which is the type of gear employed in a vehicle that makes one rear wheel go faster than the other while rounding a corner?
Bevel gear
Epicyclic gear
Differential gear
Worm and worm wheel
The function of differential gear in automobiles is to
Facilitate reverse operation of the vehicle
Reduce tyre wear at high speeds
Distribute equal torque between sheels
Take care of difference in speeds of rear wheels
The purpose of differential speed on trains is served by
Taper on rails
Taper on wheel face
Track contour
Track curvature
The first gear ratio of the 4-speed gear box of an automobile is 1:4.5 and that of differential gear is 1:4. if the automobile is driven in first gear, then the ratio between the engine and the axle speed would be
1:1
4:1
4.5:1
18:1
The inner end of the axle shaft is splined to
Crown wheel
Cage
Sun gear
Planet gear
The type of rear axle used on cars is
Semi-floating
Fully floating
Three-quarter floating
Depends on the design of vehicle
The object of suspension system is to
Prevent the road shocks from being transmitted to the vehicle components
Safeguard the occupants from road shocks
Preserve the stability of the vehicle in pitching or rolling, while in motion
All
Suggest the type of spring widely used for suspension in light and heavy commercial vehicles
Torsion bar
Semi-elliptic leaf spring
Tapered leaf spring
Coil springs
The function of a shackle with a leaf spring is to
Allow the spring length to change
Allow pivoting of spring end
Provide good traction
Prevent squeaking sound
Occasionly, thin liners of zinc or any other soft material are inserted between the blades of leaf springs to
Provide damping
Decrease vibrations
Prevent squeaking sound
Improve fatigue life
Which is not true in the context of coil springs used mainly with independent suspension system?
Can be well accommodated in restricted space
Capability to take torque reaction and side thrust
No static friction and noise problems
Can store more energy per unit volume
The springs provided for the rear wheels of a tractor are
Leaf springs
Helical springs
Helical springs supported by leaf springs
No springs are provided
Description:

paper has 50 questions which are required to be finished in an hours time approximately.

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KUNAL DUTT

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AUTO ENGG

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