Basic Thermodynamics of Engines

Question 1

Temperature at which all molecules cease to move.

Answer 1

Zero absolute

Question 2

Distance traveled per unit time. (m/s, km/hr)

Answer 2

Speed

Question 3

Acceleration due to gravity in SI and Customary units(English units)

Answer 3

9.80 m/s; 32.2 ft/s2

Question 4

Volume conversions in SI and English units.

Answer 4

1 m3 = 1000 L; 1 ft3 = 1728 in3

Question 5

Unit of Force

Answer 5

Newton (N) = kg.m/s2; lbf

Question 6

Accomplished when force acts through a distance.

Answer 6

Work

Question 7

Unit for Work

Answer 7

Joule (J) = N.m; ft-lb

Question 8

Capacity for doing work

Answer 8

Energy

Question 9

Rate of doing work. It is the amount of work accomplished per unit of time.

Answer 9

Power

Question 10

Unit for power

Answer 10

Watts (W); foot-pound per second (ft-lb/s); horsepower (hp)

Question 11

1 hp in ft-lb/s

Answer 11

550

Question 12

Amount of force exerted on a unit area by a gas or other fluid.

Answer 12

Power

Question 13

Unit for power

Answer 13

Pascal (Pa) = N/m2; Pounds per square inch (psi)

Question 14

Pressure that air exerts on any body in the atmosphere.

Answer 14

Barometric pressure

Question 15

Trapped pressure typically measured by gages which indicate only the excess of the trapped pressure over the barometric pressure.

Answer 15

Gage pressure

Question 16

Total pressure and the sum of the gage pressure plus the barometric pressure.

Answer 16

Absolute pressure

Question 17

Ideal gas law formula

Answer 17

pV = MRT

Question 18

Term for a constant-temperature compression or expansion process

Answer 18

Isothermal

Question 19

Term for the process in which no heat is transferred.

Answer 19

Adiabatic