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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. Protons have a mass number of...
Less than 90 degrees
One
Continuity flow
Isosceles triangle

2. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10
Power
Mechanical flow diagrams
110.6 kPa
Toughness

3. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation
More than 90 degrees
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Cathodic protection system
Total heat required for change of state

4. 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
Dividing the ultimate strength by the factor of safety
Charles Law
brinell hardness test
White

5. When calculating the ultimate stress of a material - we should
Chord
Greater than 180 degrees
M x g x h (kg x 9.81 m/s/s x height (m))
Divide the maximum load by the original cross - sectional area

6. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will
Octagon
Purpose of P & IDs
8908 kJ
Increase

7. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius
Mass
Purpose of P & IDs
Octagon
Specific heat

8. The most common scale in use is the...
benefits of chromium - nickel and copper in alloy steels
Naperian (Natural) logarithms
Heating and cooling white cast iron at a controlled rate
Celsius

9. Cosine rule
520.72 kJ/kg
dryness fraction
One
A

10. Force - work done - power - mechanical efficiency
A Greek letter alpha linear
26.81 m/s
Chlorides
Problem solving order

11. The classes of fastening devices are...
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Sensible heat
water equivalent
Permanent and removable

12. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal
dryness fraction
Ultimate stress/working stress
distance
520.72 kJ/kg

13. A parallelogram with adjacent sides of unequal lengths
70 MPa
benefits of copper
Rhomboid
Pm x A x L x N

14. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Details of P & IDs
Charles Law
Opposite side / hypotenuse
Toughness

15. A triangle with two equal sides
Cast iron
Areas of sectors (bounded by 2 radii and arc between them)
Isosceles triangle
View of a cutting plane

16. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
Be the same at any point in the process
Pm x A x L x N
A
Sensible heat

17. Steam turbine bearings are usually made of...
Areas of sectors (bounded by 2 radii and arc between them)
White metal and bronze
4.4 m/s
A solution

18. Force
Mass x acceleration (N)
A. sine of 90
Celsius
57.48 mm

19. Work per power stroke (J)
More than 90 degrees
Opposite side / hypotenuse
dryness fraction
Pm x A x L

20. Copper fails due to...
One angle is exactly 90 degrees
Ammonia
Malleability
White metal and bronze

21. The moment of a force about a point is...
Pm x A x L
Process flow drawing
Value of the angle increases
A twisting or turning effect

22. Means that the sum of the matter leaving the plant equals the sum of the matter entering
2.3026
To calculate power from an engine
Material balance
Celsius

23. Of a process or change taking place at constant temperature - PV = C
Boyle's law
Naperian (Natural) logarithms
10.8 m N of W
Isothermal

24. The term _____ is used as a measure of the quantity of matter.
70 MPa
benefits of chromium
Charles Law
Mass

25. Being made of 2 or more substances creating unique characteristics and properties when combine
Value of the angle increases
Composite material
ellipse
polygon

26. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
Resultant
Ideal mechanical advantage
More than 90 degrees
Cathodic protection system

27. Work per second
linear motion relationships
Heat engines
Scalene triangle
Pm x A x L x N

28. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
57.48 mm
Mass x acceleration (N)
26.81 m/s
Celsius

29. Micro organisms promote corrosion...
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Cathodic protection system
Less than 90 degrees
Dividing the ultimate strength by the factor of safety

30. A closed plane figure bounded by straight sides
benefits of chromium
1/2mv2 (kg x velocity(m/s))
polygon
Dividing the ultimate strength by the factor of safety

31. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear
Heating and cooling white cast iron at a controlled rate
White
1 cm
Output power(W)/input power(W)

32. A 1 N weight has a kinetic energy of 1 J when its speed is...
White metal and bronze
4.4 m/s
A Greek letter alpha linear
Exactly 180 degrees

33. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
M x g x h (kg x 9.81 m/s/s x height (m))
57.48 mm
Greater than 180 degrees

34. Ability to withstand deformation above elastic limit under compression without failure
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Malleability
Pm x A x L
Under deposit corrosion - enhanced oxygen generation - contact of live organisms

35. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
linear motion relationships
Less than 90 degrees
hexagon
2.3026

36. The rate at which heat flow through a slab of a material does not depend on...
Boyle's law
A twisting or turning effect
Purpose of material balance
The specific heat of the material

37. 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.
brinell hardness test
0.0723
displacement
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only

38. P & IDs
dryness fraction
Mechanical flow diagrams
A
Purpose of P & IDs

39. Resists oxidation - high strength at high temperatures - increases hardness and abrasion resistance without increasing brittleness - increases response to heat treatment - increases depth of hardness penetration - at 12% chromium steel with not tarni
benefits of chromium
Boyle's law
Unified National
Pm x A x L x N

40. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...
Latent heat of evaporation
Process flow drawing
Toughness
Chord

41. Compounds classified as salts may have the following characteristics
effective pressure
ellipse
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
linear motion relationships

42. PVn(super script n) = C
A. sine of 90
Mass
polytropic
White metal and bronze

43. The most common thread used in North America on fasteners such as bolts - is the...
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Chord
hexagon
Unified National

44. Obtuse angle
Conditions required to produce sulphide corrosion cracking
26.81 m/s
That is supported at two ends
More than 90 degrees

45. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
Opposite side / hypotenuse
Total heat required for change of state
Stray current corrosion
To calculate power from an engine

46. A triangle with no two sides of equal length
General gas law
Dividing the ultimate strength by the factor of safety
Scalene triangle
polygon

47. The force that is equal in magnitude but opposite in direction to the resultant force is called
White
Areas of sectors (bounded by 2 radii and arc between them)
The equilibrant
Complementary angles

48. coefficient of superficial (area) expansion
0.0002
linear motion relationships
10.8 m N of W
Gamma - coefficient of superficial = 2x coefficient of linear expansion

49. Negative terminal of the rectifier must always be connected to the structure that is being protected
Celsius
Cathodic protection system
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Resultant

50. The temperature of saturated steam vapor at 980 kPa is...
polygon
179.02
A
polytropic