4678646
Descrição
Quiz por TRAVIS CANNING, atualizado more than 1 year ago
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Criado por TRAVIS CANNING
quase 9 anos atrás
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Questão 1
Questão
poor combustion in a diesel engine is due to
Responda
-
cold intake air
-
overhead injectors
-
carbon deposits on the injectors
-
all of the above
-
none of the above
Questão 2
Questão
Excessive oil consumption on a diesel engine could be the result of:
1. high oil temperature
2. oil diluted with fuel
3. low oil pressure
4. cracked bearings
Responda
-
1,2
-
1,2,3
-
2,3
-
3,4
-
1,2,3,4
Questão 3
Questão
High oil temperatures in a diesel engine may be caused by:
1. low cooling water temp
2. improper combustion
3. contaminated oil
4. overheated bearings
Responda
-
1,2
-
1,2,3
-
2,3
-
3,4
-
1,2,3,4
Questão 4
Questão
How many pumps are required in the distributer system for the injection of fuel into a large industrial diesel engine?
Responda
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one
-
two
-
three
-
one pump for each cylinder
-
none of the above
Questão 5
Questão
Where is the oil filter located in a large diesel engine lubricating oil system?
Responda
-
in the crankcase
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on the discharge side of the oil cooler
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between the oil pump and the cooler
-
oil pump suction line
-
cylinder discharge
Questão 6
Questão
Which systems may be used for injecting fuel into a diesel engine cylinder?
Responda
-
direct and indirect
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solid injection system and carburetion
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air injection and turbo injection
-
solid injection system and air injection system
-
common system and distributor system
Questão 7
Questão
A fuel injector
Responda
-
has a fuel injection nozzle
-
injects fuel and air into the cylinder
-
inject fuel into the cylinder during the intake stroke
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heats the fuel in order to ensure complete combustion
-
injects fuel vapor into the cylinder
Questão 8
Questão
A carburetor is used to:
1. atomize the fuel
2. heat the fuel
3. produce a vacuum
4. control the fuel/air mixture
5. add carbon to the fuel
6. mix the fuel and air
Responda
-
1,3,5
-
2,4,6
-
1,2,3,4
-
1,3,4,5
-
1,3,4,6
Questão 9
Questão
The _______ ignition system produces a hotter spark at high speeds:
Responda
-
magnetic
-
coil
-
distributor
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magneto
-
dynamo
Questão 10
Questão
The coils function in a battery ignition system is to
Responda
-
increase the current to the plugs
-
increase the voltage to the plugs
-
increase both the current an voltage to the plugs
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increase the spark across the plugs
-
create a constant voltage to supply the plugs
Questão 11
Questão
The camshaft in a large internal combustion engine may be driven by
1. chain
2. gear
3. belt
4. fluid coupling
5. magnetic clutch
6. conduit
Responda
-
1,2,3
-
4,5,6
-
1,3,6
-
2,4,6
-
1,2,4
Questão 12
Questão
An oil priming pump on an internal combustion engine is used:
Responda
-
upon shutdown
-
before start-up
-
during operation
-
to fill the crank case
-
to filter the oil
Questão 13
Questão
Internal combustion engines that incorporate a heat exchanger cooling system are considered
Responda
-
an indirect cooling system
-
an open circuit cooling system
-
a closed circuit cooling system
-
a reverse flow cooling system
-
none of the above
Questão 14
Questão
Overheating an internal combustion engine is caused by:
Responda
-
using the wrong oil
-
running at low speeds
-
early fuel injection
-
oil leaks
-
none of the above
Questão 15
Questão
When cooling is inadequate on an internal combustion engine
Responda
-
the pistons may contract and sieze
-
the exhaust valves may become burned
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the oil may solidify
-
the oil becomes progressively more viscous
-
all of the above
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