Test your basic knowledge |

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. The term _____ is used as a measure of the quantity of matter.
Power
Mass
Specific heat
As a ratio

2. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
latent heat of evaporation (vaporation)
Work
Details of P & IDs
Hooke's Law

3. 1. In a right angle triangle - the sine of an acute angle is equal to...
velocity
polytropic
Charles Law
Opposite side / hypotenuse

4. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
velocity
Coefficient of friction
Purpose of P & IDs
elasticity

5. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
Chlorides
2.3026
Heat engines
Naperian (Natural) logarithms

6. Mechanical efficiency
Output power(W)/input power(W)
A = 4/3h2 [(square root)d/h-0.608]
Ultimate stress/working stress
Stress corrosion cracking

7. The most common thread used in North America on fasteners such as bolts - is the...
Latent heat of evaporation
Mass x acceleration (N)
Heat engines
Unified National

8. 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
elasticity
ellipse
Ultimate stress/working stress
1 cm

9. The moment of a force about a point is...
White
Toughness
Continuity flow
A twisting or turning effect

10. Protons have a mass number of...
displacement
Exactly 180 degrees
A = 4/3h2 [(square root)d/h-0.608]
One

11. Ability to withstand deformation above elastic limit under compression without failure
Toughness
effective pressure
Malleability
benefits of nickel

12. P & IDs
Mechanical flow diagrams
A / SinA = b / SinB = c / SinC
Permanent and removable
latent heat of evaporation (vaporation)

13. Expansion of a gas is said to be adiabatic when expansion takes place at...
benefits of nickel
brinell hardness test
Exactly 180 degrees
Falling temperature

14. Work per power stroke (J)
Pm x A x L
Ultimate stress/working stress
The specific heat of the material
Less than 90 degrees

15. The force that is equal in magnitude but opposite in direction to the resultant force is called
brinell hardness test
General gas law
Divide the maximum load by the original cross - sectional area
The equilibrant

16. Sine Rule
Greater than 180 degrees
110.6 kPa
benefits of chromium
A / SinA = b / SinB = c / SinC

17. Ratio of the opposite to the adjacent side of a right- angled triangle
Toughness
520.72 kJ/kg
A
Tangent

18. Steam turbine bearings are usually made of...
White metal and bronze
Trapezoid
Stroke
benefits of nickel

19. Cosine rule
Isothermal
More than 90 degrees
Pm x A x L
A

20. Resistance to wear - abrasion and penetration
polytropic
Naperian (Natural) logarithms
hardness
Chlorides

21. The ability to return to its original shape after an external force has been removed
elasticity
linear motion relationships
Chlorides
Relative density

22. Energy can be...
Pm x A x L x N
Transformed to different forms
White
Mensuration

23. Of a process or change taking place at constant temperature - PV = C
A = 4/3h2 [(square root)d/h-0.608]
Less than 90 degrees
One
Isothermal

24. A scalar quantity is one which has only magnitude and can be fully described by...
Celsius
Complementary angles
A number with the necessary unit
More than 90 degrees

25. Velocity ratio is...
Resultant
1 cm
Greater than 180 degrees
Ideal mechanical advantage

26. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
2.3026
179.02
520.72 kJ/kg
0.89

27. Area of a segment
A = 4/3h2 [(square root)d/h-0.608]
benefits of chromium - nickel and copper in alloy steels
Less than 90 degrees
Isothermal

28. 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?
White metal and bronze
1 cm
latent heat of evaporation (vaporation)
45 kN

29. 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
Octagon
Resultant
hexagon
brinell hardness test

30. Means that the sum of the matter leaving the plant equals the sum of the matter entering
Material balance
1/2mv2 (kg x velocity(m/s))
Composite material
White metal and bronze

31. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
A number with the necessary unit
A Greek letter alpha linear
Stray current corrosion
Conditions required to produce sulphide corrosion cracking

32. Pythagoras' Theorem
The elastic limit of the material is not exceeded
A
Stroke
Process flow drawing

33. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...
Chord
Total heat required for change of state
As a ratio
The elastic limit of the material is not exceeded

34. Copper fails due to...
Ammonia
179.02
View of a cutting plane
Mass x acceleration (N)

35. A gas occupies 8.62 m3 at 1800 kPa and 26
57.48 mm
The specific heat of the material
Charles Law
161

36. The rate at which heat flow through a slab of a material does not depend on...
One angle is exactly 90 degrees
The specific heat of the material
Coefficient of friction
161

37. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
2.3026
distance
benefits of chromium - nickel and copper in alloy steels
benefits of nickel

38. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%
effective pressure
Total heat required for change of state
benefits of copper
Value of the angle increases

39. 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
White
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Naperian (Natural) logarithms

40. A closed plane figure bounded by straight sides
Work
polygon
displacement
Coefficient of friction

41. A straight line that joins 2 points or circumference
A / SinA = b / SinB = c / SinC
57.48 mm
Relative density
Chord

42. Moist hydrogen sulphide environment - hydrogen sulphide must be present - water - even trace amount - high strength steel - steel must be under tensile stress - either applied or residual
57.48 mm
Mensuration
Conditions required to produce sulphide corrosion cracking
45 kN

43. A pinch of salt is added to a glass of water. The result is...
Be the same at any point in the process
A solution
Sensible heat
Boyle's law

44. The most common scale in use is the...
The specific heat of the material
The equilibrant
Total heat required for change of state
Celsius

45. Reflex angle
A number with the necessary unit
Greater than 180 degrees
displacement
0.89

46. The temperature of saturated steam vapor at 980 kPa is...
Purpose of material balance
179.02
Dividing the ultimate strength by the factor of safety
Tangent

47. Any two angles whose sum is 90
Purpose of material balance
basic oxygen process
Output power(W)/input power(W)
Complementary angles

48. Kinetic energy (Ek)
1/2mv2 (kg x velocity(m/s))
Adiabatic
General gas law
Stress corrosion cracking

49. Right angle
45 kN
Work
One angle is exactly 90 degrees
Malleability

50. Compounds classified as salts may have the following characteristics
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Be the same at any point in the process
The specific heat of the material
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only