The purpose of transmission in an automobile is
To vary the speed of automobile
To vary the torque at the wheels
To vary the power of automobile
None of these
Correct Answer :
B. To vary the torque at the wheels
Related Questions
Which of the following oil is more viscous?
SAE 30
SAE 40
SAE 70
SAE 80
The self ignition temperature of Diesel as compared to petrol is
Higher
Lower
Same
Depends on fuel quality
The stroke of an engine is the
Volume of the cylinder
Length of the connecting rod
Internal diameter of the cylinder
Distance between T.D.C. and B.D.C.
Caster is a
Forward tilt of the kingpin
Backward tilt of the kingpin
Either 'A' or 'B'
None of these
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 connecting rod is attached to the piston by the
Cap bolt
Piston pin
Cap roller bearing
Rod cap
The petrol engines are also known as
Spark ignition (S.I.) engines
Compression ignition (C.I.) engines
Steam engines
None of these
The reconditioning process used to give cylinder bore surfaces a crosshatch pattern, is known as
Honing
Porous plating
Boring
Shot peening
It is necessary to maintain the valve clearances as they
Reduce the resistance to sliding that occurs between the cam and the tappet
Allow for lengthening of the valves owing to the heat of combustion
Increase the speed at which the valves move up and down
Make the crankshaft turn smoothly
When the brake pedal free play is less than the specified value, then the
Brake drags
Brake fades
Vapour locking occurs in the brake lines
Antilock braking system malfunctions
The included angle is the sum of the
Camber and castor
Castor and S.A.I.
Camber and S.A.I.
Camber and toe in
The purpose of a thermostat in an engine cooling system is to
Prevent the coolant from boiling
Allow the engine to warm up quickly
Indicate the coolant temperature
Pressurise the system to raise the boiling point
The basic purpose of tyres is to
Grip the road and provide good traction
Substitute for springs
Act as brake
None of these
The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crankcase, is known as
Cleaning
Priming
Scavenging
Detonation
Clutch facings are usually attached to the plate by
Steel rivets
Brass rivets
Aluminium screws
Steel screws
Instead of valves, the ports are used in case of
Four stroke I.C. engines
Two stroke I.C. engines
V6 engines
None of these
The aluminium alloy is used in cylinder blocks because
It is lighter and has good heat dissipation characteristics
Material cost is low
It does not require any cylinder liners
The piston is also made of aluminium alloy
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 size of engine cylinder is referred in terms of its
Diameter and bore
Displacement and efficiency
Bore and stroke
Bore and length
The difference between DOT 3 and DOT 4 brake fluids is
DOT 4 fluids have a higher boiling point than DOT 3 fluid
DOT 4 fluids have a lower boiling point than DOT 3 fluid
DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
DOT 4 fluid is more resistant to freezing than DOT 3 fluid
The minimum parking brake force is generally ________ of gross vehicle mass (GVM).
5 %
10 %
15 %
20 %
The fuel that detonates easily, is
N-heptane
Iso-octane
Benzene
Alcohol
The capacity of a battery is usually expressed in terms of
Volts
Amperes
Weight
Ampere hours
Which one of the following statement correctly describes the construction of a bevel gear type differential?
The drive shafts are splined to the differential carrier.
The left side gear and the differential carrier rotate in constant unison.
The differential carrier houses differential pinion gears and side gears; each pinion gear meshes with a different side gear.
The differential carrier houses differential pinion gears and side gears
The main merit of a multi cylinder type cylinder sleeve is
Smaller engine dimensions
Better cooling efficiency
High rigidity
None of these
The instrument used to check specific gravity of acid in a battery is
Hydrometer
Hygrometer
Anemometer
Multimeter
The boiling point of Diesel fuel is in the range of
70°C to 100°C
100°C to 120°C
120°C to 180°C
180°C to 360 °C
The acid used in automobile battery is
Hydrochloric acid
Hydrofluoric acid
Nitric acid
Sulphuric acid
The calorific value of petrol is about
36.5-38.5 MJ/kg
39.4-42.5 MJ/kg
42.7-43.5 MJ/kg
45.5-47 MJ/kg
The crescent shaped cavity on the piston head top surface is called as
Piston oil hole
Snap ring
Valve recess
Valve clearance