DSL-201 Mid-Term Exam

Front

What is the cylinder displacement when cylinder radius is 2 inches and stroke is 3 inches?

Back

37.68 cu/in

Front

Which of the following is correct concerning cylinder displacement? Options: Cylinder displacement is the volume displaced by the piston as it moves from BDC to TDC., Cylinder displacement is also called increasing volume., Cylinder displacement can be found using the following formula: Cylinder Displacement = π × Radius2 × Stroke, Cylinder displacement is determined by the diameter of the cylinder.

Back

Cylinder displacement can be found using the following formula: Cylinder Displacement = π × Radius2 × Stroke

Front

Which term best describes the dimensional characteristics of an engine that performs heavy haul and vocational work? Options: Oversquare, Square, Undersquare, Direct

Back

Undersquare

Front

Clearance volume can be directly related to __________.

Back

Compression ratio

Front

Who is correct regarding piston rings: Technician A says engines have replaceable piston rings to minimize gas leakage past the piston. Technician B says an intermediate ring has compression-sealing functions, but no oil control functions?

Back

Technician A

Front

A diesel engine’s valve train may be operated through a __________.

Back

All of these are correct.

Front

What component is used to prevent a block camshaft from wearing on the block surface?

Back

Thrust washer

Front

Who is correct regarding the gear train or valve timing mechanism used to coordinate the movement of the crankshaft with the camshaft and the valves? Technician A says it is used for coordination, while Technician B says it does not operate power take-off (PTO) pumps.

Back

Technician A

Front

An engine’s rated speed is measured at __________.

Back

Full load

Front

Who is correct about the function of a dynamometer: Technician A says it measures engine or vehicle road speed and torque to calculate engine power, while Technician B says it applies a load to the engine or drive tires and collects speed and torque data?

Back

Both Technician A and Technician B