An oil filter bypass valve opens when the
Engine is cold
Engine overheats
Oil filter becomes clogged
Engine runs at high speed
Correct Answer :
C. Oil filter becomes clogged
Related Questions
Which of the following is not a part of the chassis?
Wheels
Front axle
Steering system
Seats
The basic purpose of a four wheel drive (4WD) system is that it
Delivers improved cornering on dry road surfaces
Eliminates the need of snow tyres, tyre chains, etc.
Ensures effective transmission of engine torque to all four wheels, even on slippery road surfaces
Ensures that effective braking can be performed, even on slippery surfaces
The temperature at which tyre inflation pressure should be checked is
20°C
25°C
35°C
Ambient temperature
The three basic cylinder arrangements for automotive engines are
Flat, radial, and V
In a row, in line, and opposed
In line, V, and opposed
V, double row, and opposed
The gradient resistance to a vehicle having a mass of 980 kg moving on an incline of 10° is
1.6694 N
16.694 N
166.94 N
1669.4 N
The exhaust gas from petrol engine contains
Petrol vapours
Water vapours
Carbon monoxide
All of these
Two general types of tyres are
Tube type and tubeless
Solid and tubeless
Air and pneumatic
Split rim and drop centre
The petrol engines are also known as
Spark ignition (S.I.) engines
Compression ignition (C.I.) engines
Steam engines
None of these
The vehicle ride will be comfortable if
Unsprung mass is kept minimum
Sprang mass is kept minimum
Vehicle mass is kept minimum
All of these
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
In a four speed four stroke Diesel engine, the intake valve
Opens at T.D.C. and closes at B.D.C.
Opens at 20° before T.D.C. and closes at 35° after B.D.C.
Opens at 10° after T.D.C. and closes at 20° before B.D.C.
None of the above
The negative plates of a lead acid battery has
Lead peroxide (PbO₂)
Spongy lead (Pb)
Lead sulphate (PbSO₄)
Sulphuric acid (H₂SO₄)
In a four stroke engine for each crankshaft revolution, the camshaft revolves
One half turn
One turn
Two turns
Four turns
Which of the following parameter can be adjusted by modifying the tie rod attachment length?
Camber
Caster
Toe
Steering gear ratio
The best fuels for compression ignition engines are
Straight chain paraffin
Aromatics
Branched chain paraffin
Naphthalene
The information provided by the oxygen (O₂) sensor to the feedback control system is about the
Air-fuel ratio
Air temperature
Air flow speed
Exhaust gas volume
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 cetane number of a Diesel fuel is a measure of
Volatility
Viscosity
Ignition quality
Delay period
The specific gravity of petrol is about
0.75
0.85
0.95
1.25
A four cylinder engine has a capacity of 2.4 litres. The swept volume of one cylinder is
400 cm³
600 cm³
1200 cm³
2400 cm³
The instrument used to check specific gravity of acid in a battery is
Hydrometer
Hygrometer
Anemometer
Multimeter
In which of the following conditions, the idle CO percentage should be measured with the vehicle?
Headlights and other electrical devices are switched off
Headlights and other electrical devices are switched on
Headlights and other lights are switched off
Headlights are switched on
If the air-fuel mixture in a spark ignition engine is too rich, then airfuel ratio is about
17 : 1
15 : 1
13 : 1
10 : 1
A maintenance free battery
Has lead-antimony plate grid
Has lead-calcium plate grid
Does not contain acid
Does not contain water
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
Caster is a
Forward tilt of the kingpin
Backward tilt of the kingpin
Either 'A' or 'B'
None of these
The coefficient of friction for the clutch facing is approximately
0.1
0.4
0.8
1.2
The seat belt tensioners are built in the
Front seats
Shoulder anchors
Seat belt retractors
Seat belt buckles
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
Engine misfiring is likely to result from
Spark plug gap too small
Spark plug gap too wide
Vapours lock in the fuel only
Incorrect fuel air mixture