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Power Engineering

Instructions:

Answer 50 questions in 15 minutes.
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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. coefficient of superficial (area) expansion
One angle is exactly 90 degrees
Dividing the ultimate strength by the factor of safety
Gamma - coefficient of superficial = 2x coefficient of linear expansion
110.6 kPa

2. A 10 m long steel pipe when heated to increase its temperature by 85
Heating and cooling white cast iron at a controlled rate
Malleability
1 cm
Output power(W)/input power(W)

3. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2
A
Heating and cooling white cast iron at a controlled rate
Octagon
A Greek letter alpha linear

4. One is the trigonometric value of...
1/2mv2 (kg x velocity(m/s))
Total heat required for change of state
A. sine of 90
Chord

5. A triangle with no two sides of equal length
Scalene triangle
One
Isosceles triangle
Composite material

6. A 1 N weight has a kinetic energy of 1 J when its speed is...
A Greek letter alpha linear
57.48 mm
4.4 m/s
hexagon

7. Change in tempereature where no heat in transferred - PV(supercript v) = C
Adiabatic
Sulfuric acid
More than 90 degrees
Details of P & IDs

8. Copper fails due to...
Exactly 180 degrees
As a ratio
Ammonia
45 kN

9. Kinetic energy (Ek)
Tangent
View of a cutting plane
1/2mv2 (kg x velocity(m/s))
Opposite side / hypotenuse

10. A closed plane figure bounded by straight sides
Specific heat
polygon
Material balance
Octagon

11. Force
Ammonia
hardness
Heat engines
Mass x acceleration (N)

12. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
2.3026
0.89
Trapezoid
0.0723

13. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Details of P & IDs
2.3026
Coefficient of friction
As a ratio

14. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10
Dividing the ultimate strength by the factor of safety
110.6 kPa
Pm x A x L
polytropic

15. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm
A twisting or turning effect
Boyle's law
Work
Specific heat

16. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius
hardness
Process flow drawing
Specific heat
110.6 kPa

17. Force - work done - power - mechanical efficiency
Scalene triangle
45 kN
Details of P & IDs
Problem solving order

18. 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
Tangent
Permanent and removable
Coefficient of friction
benefits of chromium

19. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
Mechanical flow diagrams
Stray current corrosion
distance
Pm x A x L x N

20. The temperature of saturated steam vapor at 980 kPa is...
polygon
Ammonia
179.02
26.81 m/s

21. Expansion of a gas is said to be adiabatic when expansion takes place at...
A solution
Falling temperature
A / SinA = b / SinB = c / SinC
Gamma - coefficient of superficial = 2x coefficient of linear expansion

22. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%
benefits of copper
2.3026
latent heat of evaporation (vaporation)
water equivalent

23. Energy can be...
That is supported at two ends
Octagon
Transformed to different forms
Chord

24. Stainless fails due to...
179.02
Chlorides
effective pressure
Resultant

25. A quadrilateral with two parallel sides
benefits of chromium - nickel and copper in alloy steels
Sulfuric acid
A
Trapezoid

26. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
Sulfuric acid
Be the same at any point in the process
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
linear motion relationships

27. Cosine rule
brinell hardness test
26.81 m/s
A
General gas law

28. Safe working stress is determined by...
2.3026
Mechanical flow diagrams
Dividing the ultimate strength by the factor of safety
benefits of chromium - nickel and copper in alloy steels

29. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
Celsius
Specific heat
179.02
Power

30. The classes of fastening devices are...
Permanent and removable
Trapezoid
Greater than 180 degrees
benefits of chromium - nickel and copper in alloy steels

31. Pythagoras' Theorem
A
water equivalent
To calculate power from an engine
Chlorides

32. A parallelogram with four equal sides
Rhombus
Work
The specific heat of the material
2.3026

33. The term _____ is used as a measure of the quantity of matter.
Heat engines
Pm x A x L
Scalene triangle
Mass

34. Right angle
Stress corrosion cracking
One angle is exactly 90 degrees
White
displacement

35. Orthographic projection means...
View of a cutting plane
Malleability
45 kN
Unified National

36. PVn(super script n) = C
The elastic limit of the material is not exceeded
Mechanical flow diagrams
Naperian (Natural) logarithms
polytropic

37. PV=nRT - Boyle's law and Charle's law combined
hexagon
General gas law
linear motion relationships
1/2mv2 (kg x velocity(m/s))

38. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
2.3026
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Celsius
0.89

39. 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
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Specific heat
Relative density
A / SinA = b / SinB = c / SinC

40. Reflex angle
Falling temperature
Greater than 180 degrees
Naperian (Natural) logarithms
effective pressure

41. Ratio of the opposite to the adjacent side of a right- angled triangle
Tangent
More than 90 degrees
View of a cutting plane
linear motion relationships

42. Obtuse angle
More than 90 degrees
0.89
benefits of nickel
effective pressure

43. A quadrilateral with no parallel sides
One angle is exactly 90 degrees
Boyle's law
Coefficient of friction
Trapezium

44. 1. In a right angle triangle - the sine of an acute angle is equal to...
Rhomboid
Opposite side / hypotenuse
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Heat engines

45. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.

46. The most common scale in use is the...
Celsius
Purpose of P & IDs
Pm x A x L
To calculate power from an engine

47. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
57.48 mm
Ammonia
179.02
Resultant

48. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change
Less than 90 degrees
8908 kJ
water equivalent
Pm x A x L

49. Work per power stroke (J)
4.4 m/s
Pm x A x L
Problem solving order
45 kN

50. Factor of safety
Ultimate stress/working stress
polygon
0.0723
2.3026