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WorksheetsAuto Engines - B
Total questions: 25
Worksheet time: 25mins
A two stroke engine produce one power stroke in
1 revolution of crank shaft
2 revolutions of crank shaft
3 revolutions of crank shaft
4 revolutions of crank shaft
In an engine, stroke length is
half the throw of crank
equal to throw of crank
double the throw of crank
three times the throw of cranks
A four cylinder enhgine has a capacity of 2.4 litres. The swept volume of one cylinder is
400 cm3
600 cm3
1200 cm3
2400 cm3
A single cylinder engine,which has a power stroke in every two resvolutions of the crank is said to be working on...
single-stroke cycle
two- stroke cycle
three- stroke cycle
four- stroke cycle
If 4 stroke engine makes 1000 revolutions per minute, the number of power stroke per minute will be
250
500
750
1000
Which one of the following engine components carries the engine over its non- working strokes
piston
crank shaft
connecting rod
fly wheel
If a single cylinder 2 stroke engine rotates at 2000 revolutions per minute, the number of power stroke per minute will be
500
1000
1500
2000
Ratio of B.H.P and I.H.P is called
thermal efficiency
engine efficiency
mechanical efficiency
power efficiency
Which one of the following conditions are not true about suction stroke?
a partial vacuum is produced in the cylinder
the piston starts at b.d.c
the exhaust valve is closed
the fuel charge is entered into the cylinder
An engine should not be operated in a closed garage because
exhaust gas is poisonous
the risk of an explosion
the engine receives an incorrect mixture
the engine is damaged if the gas cannot escape
Which one of the following types of engines has the longest crank shaft?
opposed engine
radial engine
inline engine
'V' engine
The material of an engine block is
brass (or) bronze
high speed steel (or) gun metal
cast iron (or) aluminium alloy
copper (or) zinc
In which one of the following types the both valves are arranged in the cylinder head?
I-head
L-head
F-head
T-head
Mostly which one of the firing order is used in four cylinder inline engine an automobile field?
1-2-3-4
1-4-3-2
1-3-4-2
4-3-2-1
Valves are arranged to open before TDC or BDC is reached.what is called?
valve lead
valve lag
valve tip
valve overlap
The inlet and exhaust valves are arranged to open at certain times.what is called?
valve lead
valve lag
valve tip
valve over lap
Which one is correct statement in given below list?
1 HP = 7 kg.mt/sect
1 HP = 75 kg.mt/sect
1 HP = 750 kg.mt/sect
1 HP = 7500 kg.mt/sect
What do you meant by cycle?
operation of one stroke
one revolution of crank shaft
produce one power by set of operation
one revolution of the fly wheel
What is the throw order of a six cylinder inline engine crank shaft?
1-2-3-4-5-6
1-5-3-6-2-4
1-6-2-5-3-4
1-4-2-6-3-5
The engine heads are generally made of cast iron and
brass
bronze
copper
aluminum
Which part of the piston is subjected to high pressure and temperature?
crown
skirt
ring section
land
What is the purpose of a gudgeon pin in an engine?
prevent the valve from rotatng
link the connecting rod to the crank shaft
secure the piston ring to the piston
connect the piston to the connecting rod
In which part of an engine is controlled by valve operating and timing in the engines?
crank shaft
cam shaft
rocket arm shaft
fly wheel
Cam shaft in an engine is always mounted...
parallel to the crank shaft
perpendicular to the crank shaft
inclined to the crank shaft
diagonal to the crank shaft
Which part is reduces noise of exhaust gases in the exhaust system?
tall pipe
exhaust manifold
muffler
exhaust neck pipe
