Define efficiency for an engine. Is it possible for an engine to have an efficiency equal to one?
What will be an ideal response?
Efficiency is defined as the ratio of the useful power output to the power input. The efficiency is always less than one because no engine can create energy, and in fact, cannot even transform energy from one form to another without some going to friction, thermal energy, and other non useful forms of energy.
You might also like to view...
When two sound waves are out of phase by ____, destructive interference will occur
a. 20° b. 120° c. 900° d. 720° e. 950°
What is the energy of a photon that has a wavelength equal to the de Broglie wavelength of a proton having a speed of 7.1 × m/s? (mproton = 1.67 × 10-27 kg, c = 3.00 × 108 m/s)
A) 220 keV B) 150 keV C) 290 keV D) 360 keV E) 440 keV
The tensile strength for a certain steel wire is 3000 MN/m2. What is the maximum load that can be applied to a wire with a diameter of 3.0 mm made of this kind of steel?
A) 64 kN B) 9.0 kN C) 42 kN D) 85 kN E) 21 kN
A spacecraft traveling through the asteroid belt has a high risk of being destroyed through a collision
Indicate whether the statement is true or false