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Power 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. Orthographic projection means...
View of a cutting plane
Details of P & IDs
Permanent and removable
Mensuration

2. The precise measurement of heat flow out of a system for chemical and physical processes
Calorimetry
Ideal mechanical advantage
Total heat required for change of state
To calculate power from an engine

3. Area of a segment
View of a cutting plane
Toughness
Continuity flow
A = 4/3h2 [(square root)d/h-0.608]

4. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%
A / SinA = b / SinB = c / SinC
Specific heat
Stray current corrosion
benefits of copper

5. The act or process of measuring
Divide the maximum load by the original cross - sectional area
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Mensuration
2.3026

6. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel
Celsius
linear motion relationships
To calculate power from an engine
basic oxygen process

7. 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
Specific heat
520.72 kJ/kg
Increase
Relative density

8. The ability to return to its original shape after an external force has been removed
elasticity
Total heat required for change of state
The specific heat of the material
Adiabatic

9. Whether a material will break under sudden impact or hard blow
Scalene triangle
70 MPa
ellipse
Toughness

10. Negative terminal of the rectifier must always be connected to the structure that is being protected
A
Cathodic protection system
Scalene triangle
ellipse

11. A quadrilateral with no parallel sides
Ultimate stress/working stress
Transformed to different forms
Trapezium
8908 kJ

12. A pinch of salt is added to a glass of water. The result is...
Rhomboid
Pm x A x L
Greater than 180 degrees
A solution

13. Any two angles whose sum is 90
Dividing the ultimate strength by the factor of safety
0.0002
Complementary angles
45 kN

14. Protons have a mass number of...
Less than 90 degrees
One
Scalene triangle
Chlorides

15. A gas occupies 8.62 m3 at 1800 kPa and 26
Areas of sectors (bounded by 2 radii and arc between them)
161
Permanent and removable
hexagon

16. Work per power stroke (J)
Purpose of material balance
Ultimate stress/working stress
Pm x A x L
A solution

17. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm
Work
Output power(W)/input power(W)
A. sine of 90
Cast iron

18. Ability to withstand deformation above elastic limit under compression without failure
benefits of chromium
ellipse
Exactly 180 degrees
Malleability

19. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
benefits of copper
Pm x A x L
26.81 m/s
Scalene triangle

20. Means that the sum of the matter leaving the plant equals the sum of the matter entering
4.4 m/s
Material balance
Cast iron
Heat engines

21. Safe working stress is determined by...
520.72 kJ/kg
Dividing the ultimate strength by the factor of safety
One angle is exactly 90 degrees
displacement

22. Mechanical efficiency
Exactly 180 degrees
Output power(W)/input power(W)
Chlorides
One

23. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)
benefits of chromium - nickel and copper in alloy steels
The equilibrant
hardness
Naperian (Natural) logarithms

24. The most common scale in use is the...
Purpose of material balance
brinell hardness test
benefits of nickel
Celsius

25. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
8908 kJ
Stray current corrosion
Mass
2.3026

26. Stainless fails due to...
Chlorides
1/2mv2 (kg x velocity(m/s))
A number with the necessary unit
Malleability

27. Compounds classified as salts may have the following characteristics
Purpose of material balance
0.89
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
dryness fraction

28. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
Mechanical flow diagrams
elasticity
0.89
To calculate power from an engine

29. Pre- construction - shows graphically the mechanical design engineer's work - during construction - proper location - reference to all equipment - after construction - training reference anddetails of process - utility and electrical systems
Purpose of P & IDs
View of a cutting plane
Trapezium
Mensuration

30. 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
velocity
Transformed to different forms
Octagon
Gamma - coefficient of superficial = 2x coefficient of linear expansion

31. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known
benefits of chromium
brinell hardness test
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Areas of sectors (bounded by 2 radii and arc between them)

32. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear
Resultant
White
Isosceles triangle
Coefficient of friction

33. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will
Heat engines
benefits of chromium
Increase
Work

34. The temperature of saturated steam vapor at 980 kPa is...
View of a cutting plane
water equivalent
Purpose of material balance
179.02

35. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
One angle is exactly 90 degrees
View of a cutting plane
Work
Resultant

36. As the cosine decreases - the...
benefits of copper
179.02
Value of the angle increases
polygon

37. Velocity ratio is...
Ideal mechanical advantage
Specific heat
Unified National
Falling temperature

38. PV=nRT - Boyle's law and Charle's law combined
General gas law
Rhomboid
0.0002
8908 kJ

39. Change in tempereature where no heat in transferred - PV(supercript v) = C
Adiabatic
distance
Chord
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only

40. Force
Mass x acceleration (N)
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
White metal and bronze
A number with the necessary unit

41. Right angle
8908 kJ
One angle is exactly 90 degrees
Cathodic protection system
Trapezoid

42. 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
Calorimetry
Isothermal
0.0723
View of a cutting plane

43. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
linear motion relationships
Work
Details of P & IDs
Process flow drawing

44. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
Calorimetry
Stress corrosion cracking
Be the same at any point in the process
Stray current corrosion

45. Work per second
Adiabatic
Pm x A x L x N
Continuity flow
Power

46. Expansion of a gas is said to be adiabatic when expansion takes place at...
Octagon
Unified National
Falling temperature
A / SinA = b / SinB = c / SinC

47. Reflex angle
4.4 m/s
water equivalent
benefits of copper
Greater than 180 degrees

48. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second
To calculate power from an engine
0.89
benefits of copper
2.3026

49. When classifying beams - the term simple beam refers to a beam
Adiabatic
hexagon
ellipse
That is supported at two ends

50. The term _____ is used as a measure of the quantity of matter.
1 cm
179.02
A twisting or turning effect
Mass