
LV07 Test 4
Authored by Seann Hodson
Other
12th Grade
Used 71+ times

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31 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A compression ignition engine produces a lot of black smoke from the exhaust when accelerating. The most likely cause of this fault is:
blocked injector
maladjusted throttle linkage
restricted air filter
restricted fuel filter
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Pinking occurs when:
the engine valve timing is set to an advanced position
the engine is running below its normal operating temperature
the flame front travels too slowly across the combustion chamber
the end gases in the combustion chamber self ignite
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The position of an oxygen sensor is found as part of:
an open loop system, in the exhaust manifold after the catalytic convertor
a closed loop system, in the exhaust before the catalytic convertor
a closed loop system, in the exhaust manifold after the catalytic convertor
an open loop system, in the exhaust before the catalytic convertor
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which piece of equipment is used to check the dynamic ignition timing on a spark ignition system?
a thermo-couple light
a probe light
a stroboscope light
a test light
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
An after-cooler is used to cool the:
inlet air to decrease its density
exhaust gas to decrease NOx content
exhaust gas to increase NOx content
inlet air to increase its density
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The fuel pressure in a common rail fuel system can be checked by connecting a pressure gauge to:
the fuel return line and running the engine
the fuel rail and running the engine
the inlet side of the fuel pump
an injector pipe and running the engine
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The starter is rotating but the engine stays stationary, one possible fault could be:
low cylinder compression
open circuit starter solenoid
worn flywheel ring gear
open circuit starter relay
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