The instrument used to check specific gravity of acid in a battery is
Hydrometer
Hygrometer
Anemometer
Multimeter
Correct Answer :
A. Hydrometer
Related Questions
The coefficient of friction for the clutch facing is approximately
0.1
0.4
0.8
1.2
The capacity of a battery is usually expressed in terms of
Volts
Amperes
Weight
Ampere hours
The camshaft of a four stroke Diesel engine running at 1000 rpm will run at
500 rpm
1000 rpm
2000 rpm
4000 rpm
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
A laminated glass upon cracking
Bursts into sharp edged fragments
Bursts into granular pieces
Sandwiched layer traps the fragments
Breaks into the form of crystals
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
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 compression ratio in petrol engine is kept less than in Diesel engine because
It makes petrol engines lighter
Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition
Less compression ratio gives better performance
It is just customary to have less compression ratio in petrol engines
The negative terminal post on the top of a battery is
Smaller than the positive terminal post
Larger than the positive terminal post
Of the same size as the positive terminal post
None of these
The petrol engines are also known as
Spark ignition (S.I.) engines
Compression ignition (C.I.) engines
Steam engines
None of these
A heat treated glass generally used in automobiles bursts into ________ upon cracking,
Sharp edged fragments
Small particles
Large particles
None of these
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
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
The frequency of flashing of light per minute in a direction (side turn) indicator is about
9
90
900
9000
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 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 compression ratio of a petrol engine is nearly
4 : 1
8 : 1
15 : 1
20 : 1
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 cetane rating of Diesel fuel is in the order of
25
45
70
90
The advantage of the fuel injection system over the carburettor system is
Improved fuel efficiency
Improved emission
Improved power output
All 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
A three way catalytic converter
Re-circulates exhaust gases
Burns fuel vapour gases
Reduces N₂, H₂O, and CO₂ emission levels
Removes CO, HC, and NO₂ from the exhaust gasses passing through it
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
Which of the following parameter can be adjusted by modifying the tie rod attachment length?
Camber
Caster
Toe
Steering gear ratio
The basic purpose of providing caster angle on wheels is to
Prevent uneven tyre wear
Maintain directional control
Bring the road contact of the tyre under the point of load
Compensate for wear in the steering linkage
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
When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate
Brake power
Compression ratio
Specific air consumption
Mean effective pressure
The parking brakes employed in vehicles are operated
Mechanically
Hydraulically
Pneumatically
None of these
In case of a Diesel car, the pressure at the end of compression is of the order of
15 bar
25 bar
35 bar
45 bar
The temperature indicating instrument in vehicles indicates the temperature of
Engine piston
Engine cylinder
Lubricating oil
Jacket cooling water