The characteristic that is enhanced by the honing of cylinder sleeves inner surface is
Cooling efficiency
Resistance to wear
Lubrication performance
None of these
Correct Answer :
C. Lubrication performance
Related Questions
The instrument used to check specific gravity of acid in a battery is
Hydrometer
Hygrometer
Anemometer
Multimeter
The specific gravity of acid in a fully charged battery is generally
1.00
1.28
1.82
2.81
The gear shift lever requires two separate motions to shift gears, and the first movement
Moves the synchronizer
Selects the synchronizer
Meshes the gears
Operates the clutch
The main merit of a multi cylinder type cylinder sleeve is
Smaller engine dimensions
Better cooling efficiency
High rigidity
None of these
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
The torque available at the contact between driving wheels and road is known as
Brake effort
Tractive effort
Clutch effort
None of these
Bead wires are made of
Steel
Copper
Zinc
Aluminium
The purpose of adding pigment to the paint is that it
Optimises the viscosity of paint
Makes paint film hard
Gives colour and filling up effect to the paint
None of the above
The three basic cylinder arrangements for automotive engines are
Flat, radial, and V
In a row, in line, and opposed
In line, V, and opposed
V, double row, and opposed
The engine oil level should be checked
Immediately after the ignition switch is turned off
While the engine is running
A few minutes after the ignition switch is turned off
While the engine is running at high idle speed
The starting system includes
A battery, a starter, and an ignition switch
A battery, a distributor, and an ignition switch
A battery, a starter, and a distributor
A distributor, a starter, and an ignition switch
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 octane rating of petrol commercially available is
85-95
95-100
100-110
110-125
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
The commonly used antifreeze solution in automobiles is
Carbon disulphide
Ethylene glycol
Ammonium chloride
Freon-12
The function of a first compression ring (top ring) is that it
Increases the combustion temperature
Creates swirl
Maintains a seal and prevents the fuel leakage
Maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber
Valve overlap is the number of degrees of camshaft rotation during which
Both valves are closed
Both valves are open
Both 'A' and 'B'
None of these
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
When a gear box has four forward speeds and one reverse speed, it is said to be a
3-speed gear box
4-speed gear box
5-speed gear box
6-speed gear box
The damper fluid leakage typically occur from
Upper damper mounting
Bottom of damper
Clearance between inner and outer tubes of damper
Coil spring mounting
If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on
Too lean mixture
Stoichiometric mixture
Most economical mixture
Too rich mixture
Wheel base of a vehicle is the
Distance between the centres of the front and rear wheels
Distance between the centres of the front tyres
Distance between the centres of the rear tyres
Extreme length of the vehicle
The braking control type traction control system (TCS) generally operates in the speed range of
Less than 20 kmph
Less than 40 kmph
Less than 60 kmph
More than 60 kmph
In comparison with a radial tyre, one advantage of a bias ply tyre is
Longer life
Lower rolling resistance
Smoother ride at low speeds
None of these
In Spark Ignition Engine
Only air is introduced into the cylinder
The mixture of air and fuel is introduced into the cylinder from carburettor
Both A and B
None of these
The coefficient of rolling resistance for a truck weighing 63,500 N is 0.018. The rolling resistance to the truck is
1.143 N
11.43 N
114.3 N
1143 N
The cetane number of a Diesel fuel is a measure of
Volatility
Viscosity
Ignition quality
Delay period
Highest useful compression ratio (HUCR) is the highest compression ratio at which the
Engine can run
Engine gives maximum output
Engine is most efficient
Fuel can be used in a test engine without knocking
The function of antilock brake system (ABS) is that is
Reduces the stopping distance
Minimises the brake fade
Maintains directional control during braking by preventing the wheels from locking
Prevents nose dives during braking and thereby postpones locking of the wheels
The basic purpose of a four wheel drive (4WD) system is that it
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