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WorksheetsTHERMAL ENGINEERING
Total questions: 17
Worksheet time: 13mins
The motion of atoms or molecules within a substance
temperature
thermal energy
kinetic energy
solid
In a four-stroke engine each cylinder has
One valve
Two valves
Three valves
Four valves
The motion of the cam is transferred to the valves through
Pistons
Rocker Arm
Cam shaft Pulley
Valve stems
In an isolated system, ________ can be transferred between the system and its surrounding.
Only energy
Only mass
both energy and mass
neither energy nor mass
Diesel fuel, compared to petrol is
less difficult to ignite
just about the same difficult to ignite
more difficult to ignite
highly ignitable
Ratio of indicated H.P. and brake H.P. is known as
Mechanical efficiency
Volumetric efficiency
Thermal efficiency
Relative efficiency
Odometer is an instrument used for measurement of
power
Fuel consumption
Engine speed
distance
What is full form of SI
Simple Ignition
Standard idling
Spark ignition
Solo identification
What's full form of CI
Compression inefficiency
Computerised injection
Compressed injection
Compression ignition
Mixture requirements during starting of SI engine is
Rich
Lean
Stoichiometry
Best power
What's the function of the carburetor
Supply fuel to engine
Suppl air to engine
Supply air fuel mixture to engine
Extract exhaust gases
A crankshaft's job in an engine is to:
deliver fuel to the cylinders
change linear motion into rotational motion
keep cylinder heads in place
To deliver the power to piston
What direction is the piston traveling during the Power-Stroke?
Up
Down
Left
Right
What position are the valves in during the intake stroke
Intake Closed, Exhaust Closed
Intake Open, Exhaust Open
Intake Open, Exhaust Closed
I have no idea
Cylinder volume with the piston at bottom dead center (BDC) compared to cylinder volume with the piston at top dead center (TDC)
Compression Ratio
Piston Comparison
Pressure Ratio
Engine Displacement
In an actual 4 stroke SI engine, exhaust valve opens...
At TDC
At BDC
Before TDC
Before BDC
