Ag. Tractor Power 1st Semester Final 20-21

Identify the proper order of the four strokes in a small engine

• intake, compression, exhaust, power 
• intake, compression, power, exhaust
• intake, power, construction, exhaust
• exhaust, compression, power, intake

During the intake stroke the piston moves________

• up
• in both directions
• the head bolts
• down

During the compression stroke the piston moves________

• up
• in both directions
• the hot gasses out of the cylinder
• down

During the power stroke the piston moves________

• up
• down slighty
• in both directions
• down

During the exhaust stroke the piston moves________

• up
• in both directions
• the head bolts
• down

Match marks are on the _______and the ____________

• crankshaft and connecting rod
• crankshaft and shroud
• crankshaft and camshaft
• camshaft and govenor

The power stroke occurs ______percent of one complete cycle in a four stroke engine.

• 14 %  
• 15 %
• 20 %
• 25 %

An event that ignites the fuel air mixture occurs between the _______stroke and the _________stroke

• compression and power
• power and intake
• intake and power
• compression and intake

Tappets ride on ______ and push up on _________ __________

• camshaft lobes + connecting rod
• camshaft lobes and connecting rod
• camshaft lobes + poppet valves
• none of the above

Select the best answer for the proper sequence for the four strokes in an internal combustion engine.

• compression, exhaust , power, intake
• compression, power, intake, exhaust
• exhaust, power, intake , compression
• exhaust, intake, compression, power