Question 1

Name four things that could cause unequal cylinder power balance.

Accepted Answer

The answer of Name four things that could cause unequal...

Question 2

How many degrees of crankshaft rotation does it take to complete one complete engine cycle in a 4-stroke engine?

Accepted Answer

A)  90 
B)  180 
C)  360 
D)  720

Question 3

Describe an inline engine.

Accepted Answer

The answer of Describe an inline engine....

Question 4

A crankshaft changes ____________________ motion to ____________________ motion.

Accepted Answer

The answer of A crankshaft changes ____________________ motion to ____________________...

Question 5

Technician A says engine displacement is commonly measured in cubic millimeters. Technician B says it is commonly measured in cubic inches. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  both A and B 
D)  neither A nor B

Question 6

A(n) ____________________ vehicle is one that uses an electric motor and a gasoline engine to move the vehicle.

Accepted Answer

The answer of A(n) ____________________ vehicle is one that uses...

Question 7

____________________ plugs are used to warm the combustion chamber of a cold diesel engine.

Accepted Answer

The answer of ____________________ plugs are used to warm the...

Question 8

Some diesel engines operate on the two-stroke cycle principle.

Accepted Answer

A) True 
 B)False

Question 9

What component of the engine determines the stroke?

Accepted Answer

A)  cylinder block 
B)  pistons 
C)  connecting rods 
D)  crankshaft

Question 10

Front engine, longitudinal layout is being discussed. Technician A says this layout is used in rear-wheel drive vehicles. Technician B says this layout is used in some front-wheel drive vehicles. Who is correct?

Accepted Answer

A)  A only 
B)  B only 
C)  both A and B 
D)  neither A nor B

Question 11

The reciprocating movement of the piston is converted into rotary motion by the _____.

Accepted Answer

A)  crankshaft and connecting rod 
B)  intermediate shaft 
C)  flywheel 
D)  camshaft

Question 12

What is detonation?

Accepted Answer

The answer of What is detonation?...

Question 13

The volume of the combustion chamber when the piston is at BDC divided by the volume of the chamber when the piston is at TDC is called _____.

Accepted Answer

A)  displacement 
B)  compression ratio 
C)  volumetric efficiency 
D)  mechanical efficiency

Question 14

Describe the difference between torque and horsepower.

Accepted Answer

The answer of Describe the difference between torque and horsepower....

Question 15

Which of the following engine problems may be indicated by good results from a compression test and a cylinder leakage test but poor results from a cylinder power balance test?

Accepted Answer

A)  incorrect valve timing 
B)  collapsed lifter 
C)  burnt intake valve 
D)  worn piston rings

Question 16

On a 4-cylinder engine that has a firing order of 1342, if number 1 cylinder is on the exhaust stroke, what stroke is number 3 cylinder on?

Accepted Answer

A)  intake 
B)  compression 
C)  power 
D)  exhaust

Question 17

The ____________________ controls the movement of the valves.

Accepted Answer

The answer of The ____________________ controls the movement of the...

Question 18

Describe rod bearing noise.

Accepted Answer

The answer of Describe rod bearing noise....

Question 19

What is compression ratio?

Accepted Answer

A)  the diameter of the cylinder 
B)  cylinder arrangement 
C)  the ratio of the air to fuel mixture 
D)  none of these answers is correct

Question 20

____________________ lobes open and close the engine valves.

Accepted Answer

The answer of ____________________ lobes open and close the engine...

Exam 9: Automotive Engine Designs and Diagnosis