The positive plates of a lead acid battery has
Lead peroxide (PbO₂)
Spongy lead (Pb)
Lead sulphate (PbSO₄)
Sulphuric acid (H₂SO₄)
Correct Answer :
A. Lead peroxide (PbO₂)
Related Questions
The main function of intake manifold is that it
Promotes the mixture of air and fuel
Reduces intake noise
Cools the intake air to a suitable temperature
Distributes intake air equally to the cylinders
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 Diesel engines are also known as
Spark ignition (S.I.) engines
Compression ignition (C.I.) engines
Steam engines
None of these
The function of oil control rings is that it
Lubricates the cylinder wall by releasing oil from its hole
Keeps the cylinder wall lubricated by holding oil in its channel
Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan
Maintains a seal and prevents escape of burned gases and oil leakage
The number of exhaust manifolds in a V6 engine is
One
Two
Four
Eight
The motion of the cam is transferred to the valves through
Pistons
Rocker arms
Camshaft pulley
Valve stems
The most accurate ignition system of a spark ignition engine is
Magneto system
Battery system
Electronic control unit system
Magneto and electronic system
Which of the following is not a part of the chassis?
Wheels
Front axle
Steering system
Seats
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 basic purpose of tyres is to
Grip the road and provide good traction
Substitute for springs
Act as brake
None of these
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
The starter motor is driven by
Chain drive
Gear drive
Flat belt drive
V-belt drive
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
Odometer is an instrument used for measurement of
Power
Fuel consumption
Engine r.p.m.
Distance
One effect of detonation is
Delay in ignition
Loss of power
Overheating of engine
Overcooling of engine
The function of a connecting rod is
To turn the flywheel
To drive the drive plate
To drive the fuel pump
To transmit motion of the piston to the crankshaft
The cetane number of a Diesel fuel is a measure of
Volatility
Viscosity
Ignition quality
Delay period
The ease with which petrol vaporizes is called its
Oxidation
Octane number
Volatility
Cetane number
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 seat belt tensioners are built in the
Front seats
Shoulder anchors
Seat belt retractors
Seat belt buckles
The tyre rotation is generally done at
1000 km
4000 km
6000 km
10000 km
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 path taken by intake air is
Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders
Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders
Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders
Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders
The aspect ratio (expressed in percentage) of the tyre is defined as the ratio of
Section width to section height
Section height to section width
Wheel diameter to section height
Wheel diameter to section width
The effect of vapour locking on the brake performance is that the
Brakes function more effectively
Brakes fail completely
Brake operation is delayed after depression of the brake pedal
Vapour locking has no effect on brake performance
In order to implement gear changes in the gear unit of an automatic transmission, a ________ is used.
Synchronizer
Planetary gear
Magnetic clutch
Hydraulic multi plate clutch
The camshaft of a four stroke Diesel engine running at 1000 rpm will run at
500 rpm
1000 rpm
2000 rpm
4000 rpm
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 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 basic part of the engine, to which the other engine parts are attached or assembled is the
Cylinder head
Crankshaft
Cylinder block
Oil pan