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Test your basic knowledge |
Power Engineering
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Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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.
Conditions required to produce sulphide corrosion cracking
Output power(W)/input power(W)
Mass
26.81 m/s
2. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%
velocity
Purpose of P & IDs
benefits of copper
Coefficient of friction
3. The act or process of measuring
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
0.89
Ammonia
Mensuration
4. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.
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5. Mechanical efficiency
Output power(W)/input power(W)
dryness fraction
0.89
M x g x h (kg x 9.81 m/s/s x height (m))
6. 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)
linear motion relationships
benefits of nickel
elasticity
General gas law
7. The heat required to raise the temperature of water at a pressure of 225 kPa from 0
Stress corrosion cracking
A twisting or turning effect
Cathodic protection system
520.72 kJ/kg
8. H2SO4 is the chemical formula for...
Latent heat of evaporation
Sulfuric acid
Mass
Less than 90 degrees
9. Stainless fails due to...
A twisting or turning effect
Boyle's law
Chlorides
Specific heat
10. When classifying beams - the term simple beam refers to a beam
A. sine of 90
latent heat of evaporation (vaporation)
Process flow drawing
That is supported at two ends
11. 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
Power
Stress corrosion cracking
Charles Law
basic oxygen process
12. Area of a segment
Rhombus
benefits of chromium
A = 4/3h2 [(square root)d/h-0.608]
Sensible heat
13. PFDs
To calculate power from an engine
Process flow drawing
The elastic limit of the material is not exceeded
Mass
14. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Details of P & IDs
161
1/2mv2 (kg x velocity(m/s))
Complementary angles
15. In the equation 0.004 + D = 0.0042 - the value of D is...
Work
As a ratio
0.0002
benefits of chromium - nickel and copper in alloy steels
16. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
latent heat of evaporation (vaporation)
Conditions required to produce sulphide corrosion cracking
Sensible heat
water equivalent
17. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
As a ratio
2.3026
One
8908 kJ
18. Potential energy (Ep)
1 cm
M x g x h (kg x 9.81 m/s/s x height (m))
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Power
19. A quadrilateral with no parallel sides
brinell hardness test
Sensible heat
Trapezium
Mass x acceleration (N)
20. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
Value of the angle increases
The elastic limit of the material is not exceeded
Specific heat
Complementary angles
21. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
Be the same at any point in the process
4.4 m/s
520.72 kJ/kg
Heat engines
22. The most common thread used in North America on fasteners such as bolts - is the...
A. sine of 90
Unified National
26.81 m/s
A Greek letter alpha linear
23. Acute angle
520.72 kJ/kg
Less than 90 degrees
Scalene triangle
Trapezium
24. Any two angles whose sum is 90
Heating and cooling white cast iron at a controlled rate
Complementary angles
Specific heat
elasticity
25. When calculating the ultimate stress of a material - we should
Divide the maximum load by the original cross - sectional area
Heat engines
The elastic limit of the material is not exceeded
As a ratio
26. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
distance
Exactly 180 degrees
benefits of chromium
Sensible heat
27. coefficient of volumetric expansion
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28. A triangle with no two sides of equal length
Octagon
Scalene triangle
View of a cutting plane
Coefficient of friction
29. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
Rhomboid
Rhombus
Stroke
dryness fraction
30. Means that the sum of the matter leaving the plant equals the sum of the matter entering
Material balance
A
Purpose of P & IDs
A
31. Work per power stroke (J)
4.4 m/s
Tangent
Ultimate stress/working stress
Pm x A x L
32. A triangle with two equal sides
Stress corrosion cracking
benefits of chromium - nickel and copper in alloy steels
0.0723
Isosceles triangle
33. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2
hexagon
linear motion relationships
10.8 m N of W
Dividing the ultimate strength by the factor of safety
34. coefficient of superficial (area) expansion
Material balance
benefits of chromium - nickel and copper in alloy steels
A
Gamma - coefficient of superficial = 2x coefficient of linear expansion
35. Being made of 2 or more substances creating unique characteristics and properties when combine
Composite material
1 cm
Less than 90 degrees
Hooke's Law
36. 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
displacement
White metal and bronze
Divide the maximum load by the original cross - sectional area
Mass x acceleration (N)
37. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
Cathodic protection system
Ultimate stress/working stress
Be the same at any point in the process
57.48 mm
38. Is the required to change a unit mass from a gas to liquid or liquid to a gas
Conditions required to produce sulphide corrosion cracking
latent heat of evaporation (vaporation)
A twisting or turning effect
Greater than 180 degrees
39. Velocity ratio is...
Ultimate stress/working stress
Specific heat
Ideal mechanical advantage
View of a cutting plane
40. The force that is equal in magnitude but opposite in direction to the resultant force is called
0.0723
velocity
linear motion relationships
The equilibrant
41. Straight angle
Permanent and removable
Cathodic protection system
Stroke
Exactly 180 degrees
42. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal
dryness fraction
Greater than 180 degrees
Divide the maximum load by the original cross - sectional area
latent heat of evaporation (vaporation)
43. P & IDs
A = 4/3h2 [(square root)d/h-0.608]
velocity
Mechanical flow diagrams
Opposite side / hypotenuse
44. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...
Charles Law
Cathodic protection system
Isothermal
70 MPa
45. Force
A twisting or turning effect
Mass x acceleration (N)
dryness fraction
Areas of sectors (bounded by 2 radii and arc between them)
46. Reflex angle
The elastic limit of the material is not exceeded
Stroke
Greater than 180 degrees
Falling temperature
47. PV=nRT - Boyle's law and Charle's law combined
Process flow drawing
Heating and cooling white cast iron at a controlled rate
Chord
General gas law
48. Energy can be...
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Transformed to different forms
Details of P & IDs
benefits of copper
49. 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
Trapezium
Less than 90 degrees
Sulfuric acid
50. 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.
Material balance
brinell hardness test
White metal and bronze
110.6 kPa
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