A basic difference between the spark ignition engine and the Diesel engine is that the
Diesel engine compresses air alone instead of an air-fuel mixture
Air temperature ignites the fuel in the Diesel engine
Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke
All of the above
Correct Answer :
D. All of the above
Related Questions
In aluminium cylinder blocks, the cylinder liners are made of
Aluminium
Ceramic
Brass
Cast iron
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 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 piston compression rings are made of
Cast iron
Steel
Aluminium
Bronze
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 main function of a master cylinder is to
Adjust the extent of brake pedal free play
Boost the force applied to brake pedal
Convert brake pedal force into hydraulic pressure
Ensure that all the wheel brakes are supplied with the same amount of fluid pressure
The function of a proportioning control valve (PCV) in a brake system is to
Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation
Reduce the brake fluid pressure when the brakes approach their lockup point
Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level
Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level.
In a forced feed lubrication system, the device used to guard against excessive oil pressure, is known as
Release chamber
Balancer
Relief valve
Stop valve
The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as
Supercharging
Auto ignition
Scavenging
Detonation
Damper in an automobile is used to
Absorb the energy
Dissipate the energy
Release the energy
Increase the energy
The problems caused by the wheel imbalance are
Hard steering and hard ride
Poor acceleration and hard steering
Steering wheel vibrations and uneven tyre wear
Poor acceleration and reduced fuel efficiency
The positive plates of a lead acid battery has
Lead peroxide (PbO₂)
Spongy lead (Pb)
Lead sulphate (PbSO₄)
Sulphuric acid (H₂SO₄)
Wheel base of a vehicle is the
Distance between the centres of the front and rear wheels
Distance between the centres of the front tyres
Distance between the centres of the rear tyres
Extreme length of the vehicle
The cetane number of a Diesel fuel is a measure of
Volatility
Viscosity
Ignition quality
Delay period
When the front wheels of a vehicle are locked during braking, then
Stopping distance becomes extremely long
Front tyres skid across the road surface, and the vehicle spins around
Rear tyres skid across the road surface, and the vehicle spins around
Driver loses control over the steering, and the vehicle continues moving in its current direction
The natural gas is compressed in a CNG cylinder at a pressure of
200 bar
220 bar
250 bar
300 bar
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 a resonator is that it
Regulates the intake air flow rate
Reduces the intake air noise
Enhances intake efficiency
Regulates the intake air temperature
The temperature at which tyre inflation pressure should be checked is
20°C
25°C
35°C
Ambient temperature
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 rating of C.I. engine fuel (Diesel) is given by
Octane number
Performance number
Cetane number
None of these
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
The compression ratio of a petrol engine is nearly
4 : 1
8 : 1
15 : 1
20 : 1
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 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
A front stabilizer bar is used to
Increase vehicle load carrying capacity
Provide a softer ride
Control suspension movement and body roll
All of the above
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
In vehicles with tilt steering, the steering column is pivoted in
Upper bracket
Lower bracket
Tilt bracket
Steering yoke joint
The most commonly used supplementary restraint system (SRS) component is
Seat belt
Brake
Airbag
Steering
The coefficient of friction for the clutch facing is approximately
0.1
0.4
0.8
1.2