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

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2. Change in tempereature where no heat in transferred - PV(supercript v) = C
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Permanent and removable
Adiabatic
displacement

3. Obtuse angle
More than 90 degrees
The specific heat of the material
ellipse
Pm x A x L

4. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%
Transformed to different forms
benefits of copper
A Greek letter alpha linear
benefits of chromium - nickel and copper in alloy steels

5. Mechanical efficiency
Dividing the ultimate strength by the factor of safety
Details of P & IDs
Trapezium
Output power(W)/input power(W)

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

7. In a pipe if no fluid is added or removed - flow must remain constant - due to the product of area and velocity being constant - flow must be the same going in as coming out of pipe
Continuity flow
elasticity
Falling temperature
Mass

8. Acute angle
Process flow drawing
Heating and cooling white cast iron at a controlled rate
A
Less than 90 degrees

9. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies
brinell hardness test
distance
Purpose of material balance
benefits of copper

10. A 1 N weight has a kinetic energy of 1 J when its speed is...
More than 90 degrees
effective pressure
4.4 m/s
Falling temperature

11. In the equation 0.004 + D = 0.0042 - the value of D is...
Rhombus
Latent heat of evaporation
0.0002
As a ratio

12. A quadrilateral with two parallel sides
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
One angle is exactly 90 degrees
Trapezoid
Be the same at any point in the process

13. A gas occupies 8.62 m3 at 1800 kPa and 26
10.8 m N of W
Ideal mechanical advantage
Ammonia
161

14. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
0.89
Stroke
As a ratio
Celsius

15. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
effective pressure
latent heat of evaporation (vaporation)
A = 4/3h2 [(square root)d/h-0.608]
Be the same at any point in the process

16. The classes of fastening devices are...
Value of the angle increases
polytropic
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Permanent and removable

17. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)
Specific heat
Naperian (Natural) logarithms
Rhomboid
Conditions required to produce sulphide corrosion cracking

18. A triangle with no two sides of equal length
1/2mv2 (kg x velocity(m/s))
Scalene triangle
displacement
179.02

19. The rate at which heat flow through a slab of a material does not depend on...
Purpose of P & IDs
Output power(W)/input power(W)
The specific heat of the material
4.4 m/s

20. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...
White metal and bronze
70 MPa
Unified National
Heating and cooling white cast iron at a controlled rate

21. A parallelogram with adjacent sides of unequal lengths
Increase
Chlorides
Unified National
Rhomboid

22. 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
Conditions required to produce sulphide corrosion cracking
Latent heat of evaporation
The equilibrant
Ammonia

23. Orthographic projection means...
Purpose of material balance
Composite material
A
View of a cutting plane

24. H2SO4 is the chemical formula for...
Octagon
water equivalent
polygon
Sulfuric acid

25. The term _____ is used as a measure of the quantity of matter.
Mass
Output power(W)/input power(W)
A Greek letter alpha linear
Opposite side / hypotenuse

26. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
57.48 mm
Stray current corrosion
Ideal mechanical advantage
Chlorides

27. Compounds classified as salts may have the following characteristics
Malleability
effective pressure
Adiabatic
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue

28. Ability to withstand deformation above elastic limit under compression without failure
A number with the necessary unit
The equilibrant
Pm x A x L
Malleability

29. Stainless fails due to...
Scalene triangle
8908 kJ
Chlorides
Falling temperature

30. Micro organisms promote corrosion...
0.0723
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Trapezium
Specific heat

31. 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
Output power(W)/input power(W)
Trapezoid
View of a cutting plane
benefits of chromium

32. Work per second
Be the same at any point in the process
A solution
Pm x A x L x N
benefits of chromium - nickel and copper in alloy steels

33. Potential energy (Ep)
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
benefits of chromium - nickel and copper in alloy steels
Specific heat
M x g x h (kg x 9.81 m/s/s x height (m))

34. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
Stroke
Cast iron
161
distance

35. The most common thread used in North America on fasteners such as bolts - is the...
Unified National
Trapezoid
161
Stray current corrosion

36. Dangerous because a crack starts slowly and propagate slowly - exceed breaking strength and the metal fails suddenly - stress must be tensile can be produced by an external load or residual stress - condensed moisture and change in temperature
Stress corrosion cracking
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Heating and cooling white cast iron at a controlled rate
Mass x acceleration (N)

37. One is the trigonometric value of...
Trapezium
A. sine of 90
Opposite side / hypotenuse
Under deposit corrosion - enhanced oxygen generation - contact of live organisms

38. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
Permanent and removable
basic oxygen process
Resultant
2.3026

39. 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
Chlorides
0.0723
Heating and cooling white cast iron at a controlled rate
benefits of chromium

40. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change
Work
Pm x A x L x N
linear motion relationships
water equivalent

41. Force - work done - power - mechanical efficiency
Scalene triangle
Areas of sectors (bounded by 2 radii and arc between them)
Pm x A x L
Problem solving order

42. The precise measurement of heat flow out of a system for chemical and physical processes
Calorimetry
View of a cutting plane
0.0723
Adiabatic

43. PVn(super script n) = C
polytropic
70 MPa
2.3026
A. sine of 90

44. coefficient of volumetric expansion

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45. A parallelogram with four equal sides
Pm x A x L x N
Specific heat
Rhombus
Heating and cooling white cast iron at a controlled rate

46. The act or process of measuring
Mensuration
latent heat of evaporation (vaporation)
Divide the maximum load by the original cross - sectional area
Heating and cooling white cast iron at a controlled rate

47. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
1/2mv2 (kg x velocity(m/s))
0.0723
Heat engines
The elastic limit of the material is not exceeded

48. 1. In a right angle triangle - the sine of an acute angle is equal to...
0.0723
Octagon
View of a cutting plane
Opposite side / hypotenuse

49. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
520.72 kJ/kg
displacement
Resultant
0.0002

50. Kinetic energy (Ek)
1/2mv2 (kg x velocity(m/s))
water equivalent
latent heat of evaporation (vaporation)
Boyle's law