NEW
Font size
WorksheetsIntroduction to Automobile Engineering
Total questions: 72
Worksheet time: 1hrs 12mins
The power actually developed inside the engine cylinder is called as
Indicated power
Brake power
Frictional power
None of these
If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about
17:1
15:1
13:1
10:1
The battery is an electrochemical device, which means battery
Makes chemicals by mechanical means
Uses chemical action to provide electricity
Has curved plates instead of flat plates
does not use an electrolyte
Two advantages of using helical gears rather than spur gears in a transmission system are
Strength and cost
Strength and less end thrust
Noise level and strength
Noise level and economy
The correct flow of power through the drive train is
Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels
Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels
Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels
Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels
In a Diesel engine, the function of a fuel injector is to
Mix the fuel and air
Ignite the air-fuel mixture
Provide flame front for ignition
Spray atomized fuel in the cylinder
In a four speed four stroke Diesel engine, the intake valve
Opens at T.D.C. and closes at B.D.C.
Opens at 20° before T.D.C. and closes at 35° after B.D.C.
Opens at 10° after T.D.C. and closes at 20° before B.D.C.
None of the above
The cam shaft in an engine is always mounted
Parallel to the crankshaft
Perpendicular to the crankshaft
Inclined to the crankshaft
None of these
The basic function of the suspension is to
Absorbs vibration and impact forces from the road surface
Ensure that the steering wheel can deliver a suitable amount of steering force
Ensure that wheel alignment is not disturbed during driving
Automatically correct the effects of over steering
The sequence order of events in a four stroke engine is
Suction exhaust power compression
Suction power compression exhaust
Suction compression power exhaust
Exhaust compression power suction
Which of the following is not a part of the chassis?
Wheels
Front axle
Steering system
Seats
The component that is responsible for converting the rotation of the steering wheel into lateral motion is the
Steering wheel
Steering shaft
Steering gearbox
Tie rod
In a four wheel drive (4WD), the numbers of gear boxes are
1
2
3
4
Tachometer in a vehicle measures
Speed
Distance
Engine r.p.m.
Fuel consumption
Regenerative braking involves :
nanofibers that repair the surface of brake pads
reducing the amount of friction necessary to slow a car
reclaiming heat from the brakes and using it for power
This is the ___________________ of Hybrid Electric Vehicles
Gearbox
Motor Generator
Automatic Transmission
Engine
C-rate of battery is measurement of
Rate of charging
Rate of discharging
Temperature
Voltage drop
Electric vehical is a green solution but not sustainable
True
False
Turbocharging is more efficient than supercharging
True
Fasle
Which of the following parts of the cover assembly that hold the pressure plate against the clutch plate?
Springs
Thrust bearings
Struts
Lever
If there are 7 clutch plates in a multi-plate clutch, what is the number of pair of contact surfaces?
5
4
6
8
If the front of the front wheels is inside and rear of front wheels are apart when the vehicle is at rest, then the configuration is called?
Toe-in
Toe out
Positive camber
Positive castor
External diameter of the clutch facing is limited to 130 mm and the inner diameter may be assumed to be 0.3 times the external diameter. Assume uniform wear theory. What is the effective mean radius?
68
58
39.5
45.5
The clutch plate has 160 mm inside and 240 mm outside diameter. The total force provided by the springs is 10 kN, when the clutch is new. The coefficient of friction is 0.4. What is the torque transmitted?
500 Nm
800 Nm
450 Nm
350 Nm
Which of the following is the need of the gearbox?
To vary the speed of the vehicle
To vary the torque of the vehicle
To vary the power of the vehicle
To vary the acceleration of the vehicle
In which type of manual transmission the double-declutching is used?
Constant-mesh gearbox
Sliding mesh gearbox
Synchromesh gearbox
Epicyclical gearbox
.In which of the gearbox sun and planet gear set is used?
Constant-mesh gearbox
Sliding mesh gearbox
Synchromesh gearbox
Epicyclical gearbox
The basic purpose of a four wheel drive (4WD) system is that is
Delivers improved cornering on dry road surfaces
Eliminates the need of snow tyres, tyre chains, etc.
Ensures effective transmission of engine torque to all four wheels, even on slippery road surfaces
Ensures that effective braking can be performed, even on slippery surfaces
In which of the gearbox all gears are always in contact?
Constant-mesh gearbox
Sliding mesh gearbox
Synchromesh gearbox
Epicyclical gearbox
Which types of gears are used in constant mesh gearbox?
Spur gear
Helical gear
Bevel gear
Worm gear
Where is the clutch located?
Between transmission and engine
Between transmission and rear axle
Between transmission and propeller shaft
Between transmission and differential
Which of the following is not part of the disc brake system
Brake rotor
Brake caliper
Brake Shoe
Brake pad
What does the acronym ABS stand for?
All Brakes Stopping
Awesome Braking System
Anti-lock Braking System
Advanced Braking System
What is this part?
Pads
Shoes
Drums
Rotors
The hand brake used in four wheelers for which of the following wheels
For front wheel only
For rear wheel only
For both front and rear wheel
None of the above
Hydraulic braking system in automobile works on which of the following principles
Conservation of mass
Conservation of energy
Pascal's law
None of the above
Which of the following braking are comes under electrical braking
Eddy current braking
Hysteresis breaking
Magnetic particle braking
All of the above
In a disc brake the disc is connected to which of the following part
Wheel
Axle
Suspension system
None
Vehicle stop because of force applied the brake, that force depends on....
Speed of the vehicle
Weight of the vehicle
Both A and B
Only speed of the vehicle
The material used for brake lining should be........ coefficient of friction
Low
Medium
High
Moderate
Disc brake are axial type of brake.
True
False
Shoe brake is commonly used in railway trains.
True
False
The front axle of a car has pivot centers 1.4 m apart. The angle of inside lock is 40℃ and the angle of the outside lock is 35℃. What is the wheelbase of the car?
5 m
3.5 m
4.5 m
5.9 m
If the wheelbase, the pivot center, and wheel track of the are 2.5 m, 1.1 m, and 1.3 m respectively. The angle of the inside lock is 35℃. What is the circle radius of the inner front wheel?
2.6 m
3.6 m
4.4 m
1.6 m
What is the angle between the steering axis and the vertical in the plane of the wheel?
Castor
Camber
Steering axis inclination
Kingpin inclination
What is the purpose of the reciprocating ball type steering gear?
To reduce the operating cost
To reduce the number of parts
To reduce the operating friction
To reduce the toe-out during the turns
What is the angle between the vertical when the top of the wheel slants outward?
Negative camber
Negative castor
Positive camber
Positive castor
Technician A says "worm gear" steering systems are used on most modern automobiles. Technician B says rack-and-pinion steering systems are used on most late-model (newer) automobiles. Who is right?
Tech A
Tech B
Both
Neither
when a perpendicular is drawn from centre of each wheel; all the perpendiculars will meet at one single point, which is known as ___ .
instantaneous center
geometrical center
circumcenter
none of the above
For a proper steering system, each of the wheels must follow ________ .
same turning circle
different turning circle
straight line
none of the above
The type of steering gear mechanism used in automobile power steering is-
Worm and Nut steering gear
Rack and Pinion Steering gear
Worm and Roller steering gear
All of the above
Steering ratio is defined as the ratio of
number of degrees that the steering wheel turns to the number degrees of wheel turn
number of degrees that the wheel turns to the number degrees of steering wheel turn
number of degrees that the steering gear turns to the number degrees of wheel turn
number of degrees that the wheel turns to the number degrees of steering gear turn
Steering ratio for cars vary from
2:1 to 5:1
5:1 to 10:1
12:1 to 20:1
20:1 to 30:1
The correct order of motion from steering wheel to
Steering wheel – steering gear – pitman arm – tie rod – pivots
Steering wheel – steering gear – tie rod – pitman arm – pivots
Steering wheel – pitman arm – tie rod – steering gear – pivots
Steering wheel – tie rod – steering gear – pitman arm – pivots
spring shackles are used to join
chassis frame and spring
Spring and Axle
chassis frame and axle
all of the above
Leaf springs absorb shocks by
bending
twisting
compression
tension
coil springs absorb shocks by
bending
twisting
compression
tension
telescopic shock absorber consists of
One chamber
two chambers
three chamber
four chambers
Which types of wheels cannot be used with a tubeless tire?
Disc wheel
Light alloy wheel
Wire wheel
Composite wheel
What does the ‘ply rating’ refer to?
Aspect ratio
Rated strength
Recommended inflation pressure
The actual number of plies
Which type of wheels is preferred in sports cars?
Disc wheel
Wire wheel
Magnesium alloy wheel
Aluminium alloy wheel
What do the permissible of mixing cross-ply and radial-ply automobile tires allow?
Cross-ply tires on left wheels
Cross-ply tires on right wheels
Cross-ply tires on front wheels
Cross-ply tires on rear wheels
in bias ply tyres
All plies run parallel to one another
Belts of steel mesh are used in the tyres
One ply layer runs diagonally one way and another layer runs diagonally the other way
All of above
The correct way to rectify an imbalanced wheel is to
Adjust the tyre pressure
Rotate the tyre
Adjust damper spring tension
Attach appropriate weights to the wheel at appropriate position
The advantage of a tubeless tyre over tube type tyre is
Slow air leakage
Better fuel efficiency
Less chances of running flat
all of these
P 215/65 R 16 95 H” it’s the tyre designation so in this what does ‘65’ indicates
aspect ratio
speed symbol
Tire constructional radial
load index
What is a maintenance-free battery?
A battery having lead-antimony plate grid
A battery having lead-calcium plate grid
A battery does not contain acid
A battery does not contain water
The purpose of the dynamo in an automobile is to
Supply electric power
Convert mechanical energy into electrical energy
Partly convert engine power into electric power
Continually recharge the battery
cells are connected is series because
Increase in voltage rating
Increase the current rating
Increase the life of the cell
None of the above
The temperature indicating instrument in vehicles indicates the temperature of
Engine piston
Engine cylinder
Lubricating oil
Jacket cooling water
ECU in vehicle stands for
Emergency Care Unit
Electrical Conversion Unit
Engine Control Unit
End Cryptographic Unit
Which type of battery is prefered nowadays in electric vehicles?
Lead-Acid type
Dry cell
Wet cell
Lithium-Ion
