The materials used for cylinder block are
Cast iron and steel
Cast iron and aluminium alloy
Steel and aluminium alloy
Brass and steel
Correct Answer :
B. Cast iron and aluminium alloy
Related Questions
The heat transfer from coolant to air in the radiator of an automobile engine takes place by
Radiation only
Convention only
Convection and radiation
Conduction, convection and radiation
In a single dry plate clutch, torsional vibrations are absorbed by
Coil springs known as torsional springs
Cushion springs
Central hub
Clutch pedal
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
The main characteristics of a maintenance free (MF) battery is that
A maintenance free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid
A maintenance free battery has a relatively short shelf life when compared with standard batteries
Since it is sealed, the water in maintenance free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
Recharging of a maintenance free battery is neither required nor possible
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it
Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
Allows the steering wheel to be turned by a greater amount when steering
Makes the steering more responsive
Reduces the amount of kickback for large steering angles
The Diesel engine works on
Otto cycle
Carnot cycle
Diesel cycle
Rankine cycle
The forced fed lubrication system means that the oil is delivered to the engine by
Gravity
The pressure created by the oil pump
Splashing action of the crankshaft
None of these
Which of the following symptom is caused as a result of brake disc run out?
Ineffectiveness of the brakes
Judder during braking
Localized wearing of the brake pads
Rapid wearing of the brake pads
The antiknock property of compression ignition engine fuel can be improved by adding
Tetraethyl lead
Trimethyl pentane
Amyl nitrate
Hexadecane
The device for smoothening out the power impulses from the engine is called
Clutch
Differential
Flywheel
Torque converter
When the piston is at T.D.C, the volume above the piston in the combustion chamber is the
Clearance volume
Cylinder volume
Exhaust volume
None of these
The rigid suspension is beneficial when
It is desired to reduce the unsprung mass
It is desired to have more flexibility in design
It is desired to improve tyre to ground contact characteristics
Large changes in load make it necessary to have a large suspension stroke
The condition that results in large quantities of HC emission is
High temperature combustion
Incomplete combustion
Low temperature combustion
High atmospheric temperature combustion
A traction control system (TCS) in automobiles controls the
Vibrations on the steering wheel
Engine power during acceleration
Torque that is transmitted by the tyres to the road surface
Stopping distance in case of emergency
In a square type engine
Geometrical shape is square
Diameter and length of piston are same
Two cylinders are placed horizontal and two vertical
Stroke length and cylinder bore are same
The crankshaft of a typical inline four cylinder engine has ________ balance weights.
12
4
16
8
The petrol engine works on
Otto cycle
Carnot cycle
Diesel cycle
Rankine cycle
If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is
175
65
14
82
The compression ratio of a petrol engine is nearly
4 : 1
8 : 1
15 : 1
20 : 1
The function of an oil control orifice is that it
Returns cylinder head lubricating oil to the oil pan at high speed
Turns oil into fine mist for spray lubrication
Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes
Removes impurities from cylinder head lubricating oil
The component that connects the steering rack to the knuckles is
Tie rod
Sector gear
Pivot
Spline
The caster is called positive when the top of the king pin is inclined to the
Rear of the vehicle
Front of the vehicle
Left of the vehicle
Right of the vehicle
The firing order for an inline four cylinder I.C. engine is
1-2-3-4
1-3-4-2
1-2-4-3
1-3-2-4
The tilting of the front wheels away from the vertical, when viewed from the front of the car, is called
Camber
Caster
Toe in
Toe out
The firing order for an opposed four cylinder l.C. engine is
1-2-3-4
1-3-4-2
1-4-3-2
1-3-2-4
If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
Detonation
Ignition
Pre-ignition
Rumble
The function of a proportioning control valve (PCV) in a brake system is to
Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation
Reduce the brake fluid pressure when the brakes approach their lockup point
Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level
Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level.
The correct way to rectify an imbalanced wheel is to
Adjust the tyre pressure
Rotate the tyres
Adjust the damper spring tension
Attach appropriate weights to the wheel at appropriate positions
The minimum parking brake force is generally ________ of gross vehicle mass (GVM).
5 %
10 %
15 %
20 %
The ease with which petrol vaporizes is called its
Oxidation
Octane number
Volatility
Cetane number