30 câu hỏi
The intake stroke draws air and fuel into the combustion chamber
Induction stroke
Income stroke
Introduction stroke
All correct
Which of these is not a power loss which takes place between engine and driving wheel?
Power loss due to friction of piston bearings and gears
Power loss from clutch to drive wheel due to friction of various parts
Transmission line loss
None of the mentioned
The force that opposes the motion of a vehicle is _______
Rolling resistance
Gradient resistance
Wind or air resistance
All of the mentioned
Rolling resistance does not depend on which of the following factors?
Load on each road wheel
Radius of driving wheel
Wheel inflation pressure
Nature of road surface
For an average type of road surface, what percentage of vehicle’s weight constitutes rolling resistance?
5 to 10%
1 to 2%
2 to 5%
0 to 3%
Wind or air resistance depends on which of the following factors?
Shape and size of vehicle body
Air velocity
Speed of vehicle
All of the mentioned
The value of the coefficient of air resistance for average cars is approximately equal to __________
0.32
0.032
0.0032
1.32
One Horse Power(H.P) is approximately equal to _____ Watts.
810
545
634
746
Gradient resistance for a vehicle depends on which of the following factors?
Weight of the vehicle
Size of the vehicle
Width of tyres
Speed of the vehicle
Power to weight ratio for high performance cars can range up to _______
150
190
230
280
Which of the following is not a major part of the crankshaft?
Main journal
Crank pins
Water pump
Crank webs
How many types of crankshaft construction are used universally?
1
2
4
6
What does the inlet manifold carry to the engine?
Air
Fuel
Oxygen + fuel
Air + fuel
Manifolds are connected to which part of the engine?
Cylinder
Cylinder head
Gasket
Engine block
In the petrol engine, the inlet manifold carries the air-fuel mixture from which part to the cylinder?
Air filter
Fuel injector
Fuel pump
Carburetor
The manifold must be large enough to allow sufficient flow for what?
Max power
Max emission
Min emission
Lower torque
Exhaust manifold is connected to which part of the engine?
Cylinder head
Engine block
Gasket
Muffler
The exhaust manifold is designed to withstand what?
Temperature
Gas
Heat
Contraction
The surface of the exhaust manifold is made smooth to minimize the restriction of what?
Exhaust gas
Temperature
Heat
Contraction
Which of the following helps in the uniform speed of the crankshaft despite uneven power impulses of the engine cylinder?
Piston
Connecting rod
Gasket
Flywheel
How much percentage of the cylinder bore size concerning the thickness of the crank web?
80
60
20
40
In a four-stroke cycle engine, the camshaft revolves at ______ the crank speed.
Two times
Half
Four times
Three times
The gears on the camshaft and crankshaft are known as ________
Lining gears
Aligning gears
Timing gears
Tuning gears
The material known as high carbon high copper chrome silicon cast steel is used for making _________
Camshaft
Cylinder body
Cylinder head
Piston
Crankshafts are usually constructed by ______
Casting
Drop forging
Drawing
Extrusion
Crankshafts are usually constructed by ______
Casting
Drop forging
Drawing
Extrusion
The crankshaft rotates the camshaft using _______
Belt drive
Chain drive
Gear drive
Motor drive
The crankshaft should be inspected for ______
Cracks
Alignment of crankpins and journals
Cleanliness of oil galleries
All of the mentioned
If there are 7 clutch plates in a multi-plate clutch, what is the number of pair of contact surfaces?
5
4
6
8
Which of the following contains no linkage between the clutch and the pedal?
Clutch – by – wire
Wet clutch
Hydraulic single plate clutch
Hydraulic multi-plate clutch