The negative plates of a lead acid battery has
Lead peroxide (PbO₂)
Spongy lead (Pb)
Lead sulphate (PbSO₄)
Sulphuric acid (H₂SO₄)
Correct Answer :
B. Spongy lead (Pb)
Related Questions
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
If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is
175
65
14
82
When the top of the wheel is tilted outward, then it is called
Positive camber
Negative camber
Positive caster
Negative caster
If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
Detonation
Ignition
Pre-ignition
Rumble
Which of the following parameter can be adjusted by modifying the tie rod attachment length?
Camber
Caster
Toe
Steering gear ratio
The main function of an exhaust muffler is the
Optimisation of exhaust efficiency
Reduction of exhaust noise
Reduction of nitrogen oxide in the exhaust gases
Reduction of the exhaust gas volume
The ball joints are used on the tie rod ends, because they
Reduce the amount of noise generated
Reduce the amount of sliding resistance
Can deal with movement of the suspension both vertically and in other directions
Improve the force transmission speed
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 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
The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to
Enable the pump's fault diagnosis function to operate
Warm up and lubricate the pump
Supplies a large amount of fuel and thereby creates a choke effect
Pressurise the fuel system before the engine is started
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 connecting rod is attached to the piston by the
Cap bolt
Piston pin
Cap roller bearing
Rod cap
The condition that results in large quantities of CO emission is
Insufficient air during combustion
Insufficient fuel during combustion
Low temperature combustion
High temperature combustion
The composition of the electrolyte in a fully charged battery is that
The electrolyte is pure distilled water
The electrolyte is pure sulphuric acid
The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight
The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight
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
Which of the following is not a part of the chassis?
Wheels
Front axle
Steering system
Seats
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 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 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
The specific gravity of acid in a fully charged battery is generally
1.00
1.28
1.82
2.81
A clutch is usually designed to transmit maximum torque which is
Equal to the maximum engine torque
80 % of the maximum engine torque
150 % of the maximum engine torque
None of these
During suction stroke, the inside pressure of cylinder is
More than the atmospheric pressure
Less than the atmospheric pressure
Equal to the atmospheric pressure
None of these
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
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 diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as
Indicator diagram
Axial force diagram
Valve timing diagram
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
Incorrect steering axis inclination (S.A.I.) causes
Tendency to assume toe-out orientation
Generation of a braking effect at tight corners
Poor recovery of the steering wheel after making a turn
The vehicle to pull to the side of lesser inclination
The Diesel engines are also known as
Spark ignition (S.I.) engines
Compression ignition (C.I.) engines
Steam engines
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
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