The most effective method of controlling S.I. engine exhaust emission is by
Recirculating exhaust
Using catalytic converter
Using some additives in the fuel
None of these
Correct Answer :
B. Using catalytic converter
Related Questions
The basic characteristics of a brake fluid is
A high boiling point
Low viscosity
Compatibility with rubber and metal parts
All of these
The included angle is the sum of the
Camber and castor
Castor and S.A.I.
Camber and S.A.I.
Camber and toe in
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 capacity of a battery is usually expressed in terms of
Volts
Amperes
Weight
Ampere hours
The frequency of flashing of light per minute in a direction (side turn) indicator is about
9
90
900
9000
The calorific value of Diesel is about
36.5 MJ/kg
38.5 MJ/kg
42.5 MJ/kg
45.5 MJ/kg
The purpose of a balancer shaft is to
Balance the timing in the movement of the two groups of pistons
Increase inertia force of the rotating crankshaft
Reduce vibrations caused by the crankshaft rotation
Adjusts the timing of the intake and exhaust valve openings
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
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
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 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
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
Instead of valves, the ports are used in case of
Four stroke I.C. engines
Two stroke I.C. engines
V6 engines
None of these
A battery can be charged by
Adding distilled water
Adding sulphuric acid
Applying voltage in the reverse direction to that of charging
Applying a voltage in the same direction to that of charging
When turning a corner
The front wheels are toeing out
The front wheels are turning on different angles
The inside front wheels has a greater angle than the outside wheel
All of the above
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
The service brakes employed in cars are generally operated
Mechanically
Hydraulically
Pneumatically
None of these
During braking, the brake shoe is moved outward to force the lining against the
Wheel piston or cylinder
Anchor pin
Brake drum
Wheel rim or axle
The valve overlap in four stroke petrol engines is approximately
30°
60°
90°
120°
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
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 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
In vehicles with tilt steering, the steering column is pivoted in
Upper bracket
Lower bracket
Tilt bracket
Steering yoke joint
For the same maximum pressure and temperature
Diesel cycle is more efficient than Otto cycle
Otto cycle is more efficient than Diesel cycle
Both Otto cycle and Diesel cycle are equally efficient
None of the above
The ignition in a spark ignition engine takes place when the piston is
Exactly at the T.D.C. position on its compression stroke
Approaching the T.D.C. position on its compression stroke
Leaving the T.D.C. position on its compression stroke
Approaching the T.D.C position on its exhaust stroke
Which part of the automobile tyre is subjected to greatest flexing action?
Bead
Side wall
Shoulder
Tread
An imbalance wheel during vehicle operation
Makes large noise when its heavy point hits the road surface
Deflects in the vehicle's longitudinal direction
Bounces vertically or deflects from side to side (as seen from front or rear)
Creates a standing wave
The materials used for cylinder block are
Cast iron and steel
Cast iron and aluminium alloy
Steel and aluminium alloy
Brass and steel
The fuel pump in the programmed fuel injection (PFI) system is located
Between the fuel filler pipe and fuel tank
In the fuel tank
On the distributor mounting in the engine compartment
On the engine compartment bulkhead
The rigid suspension is beneficial when
It is desired to reduce the unsprung mass
It is desired to have more flexibility in design
It is desired to improve tyre to ground contact characteristics
Large changes in load make it necessary to have a large suspension stroke