Test your basic knowledge |

Power Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Potential energy (Ep)






2. Refers to change in the position of the body - relative to some reference point - not concerned with actual distance traveled - a vector quantity with magnitude and direction






3. The classes of fastening devices are...






4. A 6 m long cantilever beam carries a concentrated load of 45 kN at its free end. What is the shear force at the wall?






5. In a pipe if no fluid is added or removed - flow must remain constant - due to the product of area and velocity being constant - flow must be the same going in as coming out of pipe






6. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only






7. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second






8. Malleable cast iron is produced by...






9. Orthographic projection means...






10. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known






11. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke






12. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation






13. 1. In a right angle triangle - the sine of an acute angle is equal to...






14. The heat required to raise the temperature of water at a pressure of 225 kPa from 0






15. PVn(super script n) = C






16. Whether a material will break under sudden impact or hard blow






17. A closed plane figure bounded by straight sides






18. In the equation 0.004 + D = 0.0042 - the value of D is...






19. The law that states that for a fixed amount of gas at a constant pressure - the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases






20. Cosine rule






21. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will






22. Force - work done - power - mechanical efficiency






23. PV=nRT - Boyle's law and Charle's law combined






24. Protons have a mass number of...






25. Work per second






26. A triangle with two equal sides






27. A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it A = piab or A = pi(1/2D)(1/2d) - same as = (pi/4)D/d






28. Reflex angle






29. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm






30. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details






31. Resistance to wear - abrasion and penetration






32. The ability to return to its original shape after an external force has been removed






33. The ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface u = tan(thada) - coefficient of friction is equal to the tangent of friction angle






34. Mechanical efficiency






35. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...






36. Testing metals and nonmetals of low to medium hardness. uses a ball that is pressed into material and basis calculations on the diameters of ball and indentation.






37. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change






38. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.






39. A body having a gravitational force of 2000 N - is pulled along a horizontal surface at constant speed by a rope that makes an angle of 20






40. Micro organisms promote corrosion...






41. Means that the sum of the matter leaving the plant equals the sum of the matter entering






42. A parallelogram with adjacent sides of unequal lengths






43. Being made of 2 or more substances creating unique characteristics and properties when combine






44. The ratio of the density of a substance to the density of a standard substance at the same temperature and pressure - the ratio of the density of the substance to the density of the substance to the density of water






45. Safe working stress is determined by...






46. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal






47. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain


48. The act or process of measuring






49. Pythagoras' Theorem






50. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...