Chapter Quiz

A DOHC (double overhead camshaft) V8 engine uses how many camshafts?
Answer
Selected Answer:
4

A normally aspirated automobile engine loses about ________ power per 1000 feet of altitude.
Answer
Selected Answer:
3%

A rotating force is called ________.
Answer
Selected Answer:
Torque

All of these can happen when engine compression is lower than normal, EXCEPT ________.
Answer
Selected Answer:
Harder to crank engine

All overhead valve engines ________.
Answer
Selected Answer:
Have the valves located in the head

An SOHC V8 engine has how many camshafts?
Answer
Selected Answer:
Two

Horsepower is expressed in units of ________.
Answer
Selected Answer:
Foot-pounds per minute

How many rotations of the crankshaft are required to complete each stroke of a four-stroke cycle engine?
Answer
Selected Answer:
One-half

One cylinder of an Otto 4-stroke cycle engine completes a cycle every ________ degrees.
Answer
Selected Answer:
720

One cylinder of an automotive four-stroke cycle engine completes a cycle every ________.
Answer
Selected Answer:
720 degree

Technician A says that an engine's size is called displacement and represents the volume displaced or swept by all of the pistons. Technician B says that engine power is expressed in horsepower and based on the amount of torque or twisting force the engine produces. Which technician is correct?
Answer
Selected Answer:
Both A and B

Technician A says that power is the rate of doing work. Technician B says that as horsepower increases, the time required to do work increases. Which technician is correct?
Answer
Selected Answer:
A only

Technician A says that the crankshaft determines the stroke of an engine. Technician B says that the length of the connecting rod determines the stroke of an engine. Which technician is correct?
Answer
Selected Answer:
Technician A only

Technician A says that the four strokes of the 4-stroke cycle are intake, compression, power, and exhaust. Technician B says that most engines rotate clockwise as viewed from the rear (flywheel) end of the engine. Which technician is correct?
Answer
Selected Answer:
A Only

Technician A says that work is defined as actually accomplishing movement when force is applied to an object. Technician B says that torque is not a form of work. Which technician is correct?
Answer
Selected Answer:
A only

The chemical energy in fuel is converted to heat by the burning of the fuel at a controlled rate. This process is called ________.
Answer
Selected Answer:
Combustion

The coolant flow through the radiator is controlled by the ________.
Answer
Selected Answer:
Thermostat

The diameter of a cylinder is called the ________.
Answer
Selected Answer: Bore

The metric unit for torque used by most original equipment manufacturers (OEM) is which of these?
Answer
Selected Answer:
Newton-meter

The volume in the cylinder above the piston when the piston is at the bottom of the stroke (BDC) compared to the volume in the cylinder above the piston when the piston is at the top of the stroke (TDC) is referred to as ________.
Answer
Selected Answer:
Compression Ratio

Torque is expressed in units of ________.
Answer
Selected Answer:
Pound-feet

Which of these components determines the engine stroke?
Answer
Selected Answer:
Crankshaft

Which part of the four stroke cycle is illustrated in this drawing?

Answer
Selected Answer:
Exhaust