Worksheetsvehicle fuel, ignition, air and exhaust system units(c)
Total questions: 10
Worksheet time: 30mins
Which one of the following is a method used in silencers to reduce exhaust noise?
Baffle plates
Gate plates
Perforated plates
Twin tail pipes
Which one of the following exhaust produced by incomplete combustion?
Carbon dioxide
Carbon monoxide
Oxygen
Water
What is the electronic fuel injection component shown in the image?
Mass air flow sensor
Manifold absolute pressure sensor
Air flow meter (moving vain type)
Exhaust gas recirculation valve
Which one of the following component maintains fuel system pressure in an electronic fuel injection (EFI) system?
Fuel rail
Fuel filter
Fuel regulator
Fuel injector
What is the purpose of sensor in the image shown?
Signais the ECU for throttle position
Control the idle speed of the engine
Advance the ignition timing
Detects the volume of air flow
When diesel injectors are being replaced what component also needs to be renewed?
Diesel fuel filter
Injector sealing washers
Leak off and return pipes
Electronic control unit
Into which circuit is an ignition system ballast resistor sometimes fitted?
Primary circuit
Secondary circuit
Spark plug H.Y circuit
Spark plug AC circuit
Why is an internal resistor incorporated into a spark plug?
To increase firing voltage
To reduce radio interference
To increase fuel economy
To reduce exhaust emissions
What is the exhaust component indicated in the image shown?
Post catalytic converter oxygen sensor
Pre catalytic converter oxygen sensor
Post catalytic converter carbon dioxide sensor
Pre catalytic converter carbon dioxide sensor
Why do turbocharger shaft bearings require constant cooling to prevent them overheating?
The exhaust gas flow is reduced causing a rise in temperature
The exhaust gas driving the turbine creates a high temperature
The increasein air pressure causes a high rise in temperature
The prevention of turbine blade failure due to the increase in temperature
