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The Horsepower and Torque Quiz
by Staff
Flip through the pages of almost any automotive publication and you will see horsepower and torque listed for each vehicle. But how much do you know about these measurements? Channel your inner motorhead, and see if you can ace this quiz.

What is horsepower?

  • work done over time
  • mechanical transfer of energy
  • nonmechanical transfer of energy

Who derived the measurement of horsepower?

  • James Joule
  • Isaac Newton
  • James Watt

True or false: The measurement of 1 horsepower is about 25 percent more than the rate of work an average horse can sustain.

  • true
  • false

What is torque?

  • a linear force
  • a twisting force causing rotation
  • rotation over time

Which scientist first discussed the concept of torque?

  • Archimedes
  • Isaac Newton
  • Galileo

In the U.S., torque is measured in pound-feet, but what is the metric or SI unit of measure for torque?

  • Newton meters
  • meter-kilograms
  • Newton kilometers

What was the horsepower of the first gasoline automobile, the Benz Patent Motorcar?

  • 0.5 horsepower (373 watts)
  • 0.75 horsepower
  • 1 horsepower

Which automobile enthusiast said, "Horsepower sells cars; torque wins races"?

  • Patrick Dempsey
  • Ralph Lauren
  • Jay Leno

How much horsepower does the 2016 Mercedes-AMG GT S produce?

  • 403 horsepower (300,517 watts)
  • 503 horsepower
  • 603 horsepower

Which force is responsible for initiating the movement of a stationary vehicle?

  • torque
  • horsepower
  • neither

What is the torque range of an average turbocharged engine of a semitrailer?

  • 500-750 pound-feet (678-1,017 Newton meters)
  • 750-1,000 pound-feet
  • 1,200-2,050 pound-feet

Which measurement is most important to keep a moving vehicle at highway speed?

  • torque
  • horsepower
  • neither

The Peel P50, the smallest car ever made, had how much horsepower?

  • 12.2 horsepower
  • 8.2 horsepower
  • 4.2 horsepower

How much torque does the new Peel P50 replica produce?

  • 15.9 pound-feet (22 Newton meters)
  • 9.9 pound-feet
  • 3.09 pound-feet

True or false: Horsepower is calculated by using torque.

  • true
  • false

What device is used to measure the horsepower of an automobile?

  • speedometer
  • dynamometer
  • tachometer

What is the electrical equivalent of 1 horsepower?

  • 746 watts
  • 746 ohms
  • 746 amps

How much torque does the Bugatti Veyron 16.4 Grand Sport Vitesse produce?

  • 706 pound-feet (957 Newton meters)
  • 906 pound-feet
  • 1,106 pound-feet

What does brake horsepower measure?

  • horsepower output with the drivetrain
  • horsepower output without the drivetrain
  • neither

Which part of a vehicle is used for measuring brake horsepower?

  • the axle
  • the engine's flywheel
  • the rear wheels

On average, how much higher is brake horsepower than the standard measurement of horsepower?

  • 15 percent
  • 10 percent
  • 5 percent

It takes more torque or force to move a vehicle at rest than it does to move a vehicle in motion. Which law of physics supports this statement?

  • Newton's third law
  • Newton's second law
  • Newton's first law

At what rpm speed are torque and horsepower exactly the same?

  • 5,252 rpm
  • 2,525 rpm
  • They are never the same.

What is the heat equivalent of 1 horsepower?

  • 1,545 British thermal units
  • 2,545 British thermal units
  • 3,545 British thermal units

The Landini Rex 110 utility tractor has one of the highest torque ratings of any tractor. How much torque does the Landini produce?

  • 30,683 pound-feet (41,601 Newton meters)
  • 15,683 pound-feet
  • 1,683 pound-feet

What is the horsepower rating of the Landini Rex 110 utility tractor?

  • 102 horsepower
  • 202 horsepower
  • 302 horsepower

Electrical motor horsepower can be derived from which measurement?

  • electrical input in amps
  • electrical input in volts
  • electrical input in watts

Which race car driver and former Indy 500 winner once said, "If you can leave two black stripes from the exit of one corner to the braking zone of the next, you have enough horsepower"?

  • Mark Donohue
  • Bobby Unser
  • Rick Mears

True or false: In physics, torque is a scalar quantity (a value fully described by a number or magnitude).

  • true
  • false

Thrust horsepower of a jet engine can be determined by multiplying the thrust in pounds by aircraft speed and dividing by what number?

  • 375
  • 3,737
  • 5,252