Week #1 - Fundamentals of Electricity

Question 1

Who invented the first heat engine?

Answer 1

Hero

Question 2

Which of the following properly describes the first heat engine?
a. Internal combustion b. Reaction turbine c. Two-stroke cycle d. Four-stroke cycle

Answer 2

Reaction turbine

Question 3

Who invented the term horsepower?

Answer 3

Watt

Question 4

Who built the world’s first useful steam engine?

Answer 4

Savery

Question 5

Who designed the first centrifugal governor?

Answer 5

Watt

Question 6

In what year did Diesel patent his compression ignition engine?

Answer 6

1892

Question 7

Who patented the first high-pressure liquid fuel injection pump for a diesel engine?

Answer 7

Bosch

Question 8

Who is known as the “father of the highway diesel engine”?

Answer 8

Cummins

Question 9

What are the U.S. inventors Eckert and Mauchly known for?

Answer 9

The first electronic digital computer

Question 10

The world’s first automobile was built by who?

Answer 10

Cugnot

Question 11

Calculate the brake power of an engine producing 1,150 lb-ft. of torque at the flywheel when it is turning at 2,000 rpm.

Answer 11

438 BPH

Question 12

Use the PLANC formula to calculate the indicated power of a six-cylinder, fourstroke cycle engine run at 1,800 rpm using the following data:
Stroke: 6.0 inches
Bore: 5.5 inches
MEP: 220 psi

Answer 12

428 BHP

Question 13

Which of the following is required to produce peak torque in a diesel engine?
a. Peak volumetric efficiency b. Peak mechanical efficiency c. Peak brake power d. Peak cylinder pressure

Answer 13

Peak cylinder pressure

Question 14

In most hydromechanical fuel systems, when maximum engine rpm is increased, the engine brake power potential will also increase. True or False?

Answer 14

True

Question 15

Which of the following statements helps explain why an engine develops peak brake power at a higher rpm than peak torque?
a. Volumetric efficiency is better at high rpm b. There is more time for combustion c. More power strokes per second occur d. Cylinder pressures are highest

Answer 15

More power strokes per second occur

Question 16

Which of the following is true of an engine described as having high torque rise when comparing it with its standard version with the same nominal rated power?
a. It will provide a wider operating rpm range b. It will be more fuel efficient c. It will produce higher brake power d. It will have a higher maximum speed

Answer 16

It will provide a wider operating rpm range

Question 17

A group of cyclists all weighing 175 lbs (80 kg) and riding on bicycles of equal weight ride a 6.4-mile (10-kilometer) race and all finish it. Which of the cyclists has performed the most work?
a. The winner b. The loser c. All have performed equal work

Answer 17

All have performed equal work

Question 18

Usable power at the flywheel of an engine is know as what?

Answer 18

Brake power

Question 19

When engine power is calculated rather than tested, it is know as what?

Answer 19

Indicated power

Question 20

Which of the following expresses 1 HP correctly?

a. 550 lb-ft. of work per second b. 5,252 lb-ft. of work per minute c. 33,000 lb-ft. of work per second

Answer 20

550 lb-ft. of work per second

Question 21

Convert a torque value of 25 lb-ft. into Newton-meters

Answer 21

33.9

Question 22

A Cummins ISX 11.9 liter engine, programmed to 330 HP, produces a peak torque value of 1,350 lv-ft. at 1,300 rpm. Convert the torque value to Newton-meters.

Answer 22

1,830 N.m

Question 23

A Detroit Diesel DD16 is rated at 600 HP. Express this in kilowatts.

Answer 23

448 kW

Question 24

A Navistar MaxxForce 13 produces 355 kW of power at 1,800 rpm. Convert the kW to an HP value.

Answer 24

475 HP

Question 25

When comparing truck engine brake power measured at the flywheel to that measured at the drive wheels, which one of the following should be true about brake power?

a. There is no difference if the transmission and drive carrier are functioning properly.
b. Power at the flywheel exceeds that at the drive wheels by 20% to 25%
c. Power at the wheels exceeds that at the flywheel by 10% to 25%
d. Power can only be measured at the drive wheels

Answer 25

Power at the flywheel exceeds that at the drive wheels by 20% to 25%