Question 1

Which of the following is the more accurate way of expressing torque?

Accepted Answer

A)   force
B)   work
C)   linear effort
D)   turning effort

Question 2

In a diesel engine, force is represented by ___________________________________.

Accepted Answer

The answer of In a diesel engine, force is represented...

Question 3

When comparing work accomplished with power, which of the following helps define power but has nothing to do with work?

Accepted Answer

A)   torque
B)   force
C)   weight
D)   time

Question 4

One hundred Newton meters are equal to:

Accepted Answer

A)   135.6 lb/ft
B)   13.56 lb/ft
C)   737 lb/ft
D)   73.7 lb/ft

Question 5

A Cummins ISX is rated at 625 BHP. Convert to kilowatts:

Accepted Answer

A)   448 kw
B)   466 kw
C)   485 kw
D)   493 kw

Question 6

What is the rate of performing work known as?

Accepted Answer

A)   torque
B)   energy
C)   power
D)   effort

Question 7

What is the force used in a diesel engine to produce mechanical output?

Accepted Answer

A)   air pressure
B)   fuel injection pressure
C)   cylinder pressure
D)   inertia

Question 8

Two technicians named A and B, each weighing 200 lbs (90 kgs) , jog a distance of one mile (1.6 km) . Technician A completes the distance in 15 minutes and technician B completes the distance in 20 minutes. Who has done the most work?

Accepted Answer

A)   Technican A
B)   Technician B
C)   Work accomplished is equal
D)   More information is required C

Question 9

Which of the following acronyms is used by manufacturers to indicate actual fuel consumption?

Accepted Answer

A)   Btus per hour
B)   BSFC
C)   BHP
D)   kw/hr

Question 10

When James Watt was studying draft horse working ability, how much power did he reckon the horse was capable of lifting?

Accepted Answer

A)   550 lbs through 100ft in 60 seconds
B)   330 lbs through 100ft in 60 seconds
C)   330 lbs through 10ft in 60 seconds
D)   550 lbs through 1000ft in 60 seconds

Question 11

A Detroit Diesel DD15 engine dynamometer tests at 505 BHP. Convert to kilowatts:

Accepted Answer

A)   300 kw
B)   325 kw
C)   335 kw
D)   377 kw

Question 12

Work = ____________________ × ____________________

Accepted Answer

Force, Dis...

Question 13

Which of the following methods of measuring horsepower when applied to the same engine will usually produce the lowest rating?

Accepted Answer

A)   indicated horsepower
B)   calculated horsepower
C)   brake horsepower
D)   SAE horsepower

Question 14

If the length of a crankshaft throw was changed either up or down, which of the following would be directly affected?

Accepted Answer

A)   engine torque
B)   engine rpm
C)   engine noise
D)   engine vibration

Question 15

Two identically powered trucks, one loaded and one unloaded, complete a 200 mile journey. The loaded truck has twice the GVW of the unloaded truck and completes the journey averaging 55 mph. The unloaded truck completes the journey averaging 60 mph. Which of the two trucks has done the most work?

Accepted Answer

A)   equal
B)   the unloaded truck
C)   the loaded truck
D)   more information is required C

Question 16

25,450 Btu per hour = ____________________ HP

Accepted Answer

The answer of 25,450 Btu per hour = ____________________ HP...

Question 17

What type of energy does compressed air have?

Accepted Answer

A)   potential energy
B)   kinetic energy
C)   mechanical energy
D)   repressed energy

Question 18

What terms do truck diesel engine manufacturers use to rate the power of their engines?

Accepted Answer

A)   brake horsepower
B)   indicated horsepower
C)   kilowatts
D)   peak torque

Question 19

330 lb × 100 ft = ____________________ lb/ft per minute = ____________________ lb/ft per second = ____________________ HP

Accepted Answer

33,000, 550, 1

Question 20

Which of the following correctly identifies torque rise rpm?

Accepted Answer

A)   idle to high idle rpm
B)   engine lug to peak torque rpm
C)   peak torque to rated speed rpm
D)   rated speed to high idle rpm

Exam 6: Power

Which of the following is the more accurate way of expressing torque?

Correct AnswerverifiedShow Answer

In a diesel engine, force is represented by ___________________________________.

Correct AnswerverifiedShow Answer

When comparing work accomplished with power, which of the following helps define power but has nothing to do with work?

Correct AnswerverifiedShow Answer

One hundred Newton meters are equal to:

Correct AnswerverifiedShow Answer

A Cummins ISX is rated at 625 BHP. Convert to kilowatts:

Correct AnswerverifiedShow Answer

What is the rate of performing work known as?

Correct AnswerverifiedShow Answer

What is the force used in a diesel engine to produce mechanical output?

Correct AnswerverifiedShow Answer

Two technicians named A and B, each weighing 200 lbs (90 kgs) , jog a distance of one mile (1.6 km) . Technician A completes the distance in 15 minutes and technician B completes the distance in 20 minutes. Who has done the most work?

Correct AnswerverifiedC

Which of the following acronyms is used by manufacturers to indicate actual fuel consumption?

Correct AnswerverifiedShow Answer

When James Watt was studying draft horse working ability, how much power did he reckon the horse was capable of lifting?

Correct AnswerverifiedShow Answer

A Detroit Diesel DD15 engine dynamometer tests at 505 BHP. Convert to kilowatts:

Correct AnswerverifiedShow Answer

Work = ____________________ × ____________________

Correct AnswerverifiedForce, Dis...View AnswerShow Answer

Which of the following methods of measuring horsepower when applied to the same engine will usually produce the lowest rating?

Correct AnswerverifiedShow Answer

If the length of a crankshaft throw was changed either up or down, which of the following would be directly affected?

Correct AnswerverifiedShow Answer

Two identically powered trucks, one loaded and one unloaded, complete a 200 mile journey. The loaded truck has twice the GVW of the unloaded truck and completes the journey averaging 55 mph. The unloaded truck completes the journey averaging 60 mph. Which of the two trucks has done the most work?

Correct AnswerverifiedC

25,450 Btu per hour = ____________________ HP

Correct AnswerverifiedShow Answer

What type of energy does compressed air have?

Correct AnswerverifiedShow Answer

What terms do truck diesel engine manufacturers use to rate the power of their engines?

Correct AnswerverifiedShow Answer

330 lb × 100 ft = ____________________ lb/ft per minute = ____________________ lb/ft per second = ____________________ HP

Correct Answerverified33,000, 550, 1

Which of the following correctly identifies torque rise rpm?

Correct AnswerverifiedShow Answer

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C

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Work = ×

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Force, Dis...
View Answer

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C

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330 lb × 100 ft = lb/ft per minute = lb/ft per second = HP

Correct Answer
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33,000, 550, 1

Correct Answer
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