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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. 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
Total heat required for change of state
Scalene triangle
water equivalent
displacement

2. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known
Isosceles triangle
Transformed to different forms
179.02
Areas of sectors (bounded by 2 radii and arc between them)

3. Obtuse angle
M x g x h (kg x 9.81 m/s/s x height (m))
More than 90 degrees
effective pressure
Cathodic protection system

4. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal
A
dryness fraction
White
Heat engines

5. The classes of fastening devices are...
70 MPa
Permanent and removable
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
A

6. Orthographic projection means...
View of a cutting plane
Cathodic protection system
Toughness
More than 90 degrees

7. Cosine rule
Dividing the ultimate strength by the factor of safety
A
A solution
Ideal mechanical advantage

8. A gas occupies 8.62 m3 at 1800 kPa and 26
Increase
161
Ideal mechanical advantage
A number with the necessary unit

9. The most common thread used in North America on fasteners such as bolts - is the...
Boyle's law
Dividing the ultimate strength by the factor of safety
Unified National
Purpose of material balance

10. Force
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
26.81 m/s
Mass x acceleration (N)
Greater than 180 degrees

11. Potential energy (Ep)
The equilibrant
White
M x g x h (kg x 9.81 m/s/s x height (m))
Specific heat

12. The moment of a force about a point is...
Stroke
1/2mv2 (kg x velocity(m/s))
A twisting or turning effect
4.4 m/s

13. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)
Trapezium
Sulfuric acid
Composite material
Naperian (Natural) logarithms

14. The most common scale in use is the...
Celsius
benefits of chromium - nickel and copper in alloy steels
0.0002
A Greek letter alpha linear

15. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10
110.6 kPa
10.8 m N of W
0.0723
hardness

16. Kinetic energy (Ek)
Dividing the ultimate strength by the factor of safety
Rhomboid
A number with the necessary unit
1/2mv2 (kg x velocity(m/s))

17. Work per second
Mechanical flow diagrams
Dividing the ultimate strength by the factor of safety
Sensible heat
Pm x A x L x N

18. In the equation 0.004 + D = 0.0042 - the value of D is...
One angle is exactly 90 degrees
8908 kJ
0.0002
polytropic

19. Stainless fails due to...
Power
Chlorides
Increase
The specific heat of the material

20. u = initial velocity (m/s) - v = final velocity (m/s) - t = time (s) - s = distance (m) - a = acceleration (m/s/s) - g = acceleration due to gravity (m/s/s)
latent heat of evaporation (vaporation)
Cast iron
Gamma - coefficient of superficial = 2x coefficient of linear expansion
linear motion relationships

21. A triangle with no two sides of equal length
Stress corrosion cracking
dryness fraction
Scalene triangle
A. sine of 90

22. The most common material used in making large industrial diesel engine pistons is...
0.0723
4.4 m/s
ellipse
Cast iron

23. Work per power stroke (J)
The specific heat of the material
effective pressure
Pm x A x L
161

24. As the cosine decreases - the...
Heating and cooling white cast iron at a controlled rate
A
Value of the angle increases
polygon

25. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change
water equivalent
Cathodic protection system
Relative density
dryness fraction

26. 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
Charles Law
benefits of nickel
Material balance
0.0723

27. A quadrilateral with no parallel sides
effective pressure
More than 90 degrees
Trapezium
Heating and cooling white cast iron at a controlled rate

28. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
velocity
Details of P & IDs
Cathodic protection system
Work

29. One is the trigonometric value of...
A. sine of 90
Exactly 180 degrees
Problem solving order
10.8 m N of W

30. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
One angle is exactly 90 degrees
benefits of chromium
Mensuration
Specific heat

31. Change in tempereature where no heat in transferred - PV(supercript v) = C
White
Adiabatic
polytropic
Heat engines

32. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel
Chord
Complementary angles
Coefficient of friction
basic oxygen process

33. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
distance
Permanent and removable
Octagon
26.81 m/s

34. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2
1/2mv2 (kg x velocity(m/s))
10.8 m N of W
The elastic limit of the material is not exceeded
hexagon

35. The temperature of saturated steam vapor at 980 kPa is...
Boyle's law
latent heat of evaporation (vaporation)
Increase
179.02

36. 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
520.72 kJ/kg
Problem solving order
Chord

37. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
General gas law
Material balance
0.89
Ideal mechanical advantage

38. Protons have a mass number of...
Problem solving order
basic oxygen process
General gas law
One

39. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second
Purpose of P & IDs
Power
Boyle's law
Celsius

40. coefficient of superficial (area) expansion
Pm x A x L x N
Trapezoid
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Output power(W)/input power(W)

41. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm
Ultimate stress/working stress
Work
Rhombus
Permanent and removable

42. Ability to withstand deformation above elastic limit under compression without failure
Less than 90 degrees
One angle is exactly 90 degrees
Malleability
The equilibrant

43. The precise measurement of heat flow out of a system for chemical and physical processes
Heat engines
Trapezoid
velocity
Calorimetry

44. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
Problem solving order
ellipse
2.3026
Adiabatic

45. Sine Rule
Latent heat of evaporation
A / SinA = b / SinB = c / SinC
A
ellipse

46. A parallelogram with four equal sides
A solution
Rhombus
benefits of nickel
Ideal mechanical advantage

47. P & IDs
70 MPa
Tangent
Mechanical flow diagrams
Opposite side / hypotenuse

48. PFDs
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Process flow drawing
velocity
Isosceles triangle

49. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
Sensible heat
Pm x A x L x N
Gamma - coefficient of superficial = 2x coefficient of linear expansion
The equilibrant

50. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Latent heat of evaporation
The elastic limit of the material is not exceeded
Rhombus
Details of P & IDs