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Test your basic knowledge |
Power Engineering
Start Test
Study First
Subject
:
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 act or process of measuring
Mensuration
Isothermal
The elastic limit of the material is not exceeded
10.8 m N of W
2. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Mass x acceleration (N)
Details of P & IDs
0.0002
26.81 m/s
3. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2
hardness
Dividing the ultimate strength by the factor of safety
hexagon
Opposite side / hypotenuse
4. The force that is equal in magnitude but opposite in direction to the resultant force is called
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Trapezoid
The equilibrant
Sensible heat
5. When calculating the ultimate stress of a material - we should
Heating and cooling white cast iron at a controlled rate
Pm x A x L
A
Divide the maximum load by the original cross - sectional area
6. The classes of fastening devices are...
Resultant
Permanent and removable
Scalene triangle
As a ratio
7. The term _____ is used as a measure of the quantity of matter.
More than 90 degrees
benefits of chromium - nickel and copper in alloy steels
Cathodic protection system
Mass
8. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.
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183
9. Right angle
One angle is exactly 90 degrees
View of a cutting plane
White metal and bronze
161
10. Velocity ratio is...
Ideal mechanical advantage
26.81 m/s
The elastic limit of the material is not exceeded
Cathodic protection system
11. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
Details of P & IDs
110.6 kPa
0.89
Hooke's Law
12. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
Sensible heat
Charles Law
0.0723
To calculate power from an engine
13. Resistance to corrosion and oxidation at high temperatures - improves toughness - prevents brittleness at low temperatures - increases strength without affecting toughness - amounts range from 1-4% - high impact resistance at amounts as high as 36% -
Resultant
Sulfuric acid
benefits of nickel
Gamma - coefficient of superficial = 2x coefficient of linear expansion
14. 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
Sulfuric acid
Conditions required to produce sulphide corrosion cracking
Chord
Chlorides
15. Malleable cast iron is produced by...
Malleability
ellipse
Heating and cooling white cast iron at a controlled rate
General gas law
16. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)
Naperian (Natural) logarithms
Exactly 180 degrees
benefits of chromium
26.81 m/s
17. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
Permanent and removable
View of a cutting plane
Heat engines
Rhomboid
18. A closed plane figure bounded by straight sides
hexagon
polygon
Total heat required for change of state
distance
19. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
That is supported at two ends
velocity
Resultant
Value of the angle increases
20. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...
benefits of copper
1 cm
70 MPa
A. sine of 90
21. Of a process or change taking place at constant temperature - PV = C
0.0723
Rhomboid
Isothermal
Composite material
22. 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
Dividing the ultimate strength by the factor of safety
Purpose of P & IDs
0.89
benefits of chromium
23. One is the trigonometric value of...
A. sine of 90
Trapezoid
Ultimate stress/working stress
benefits of chromium - nickel and copper in alloy steels
24. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius
Isosceles triangle
Specific heat
Naperian (Natural) logarithms
More than 90 degrees
25. A quadrilateral with no parallel sides
Isosceles triangle
Details of P & IDs
Trapezium
polytropic
26. The heat required to raise the temperature of water at a pressure of 225 kPa from 0
effective pressure
Unified National
520.72 kJ/kg
More than 90 degrees
27. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm
Work
A / SinA = b / SinB = c / SinC
displacement
Sulfuric acid
28. As the cosine decreases - the...
hexagon
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Value of the angle increases
Ideal mechanical advantage
29. The moment of a force about a point is...
Falling temperature
A twisting or turning effect
520.72 kJ/kg
Unified National
30. Force
Increase
Mass x acceleration (N)
A = 4/3h2 [(square root)d/h-0.608]
Toughness
31. H2SO4 is the chemical formula for...
1/2mv2 (kg x velocity(m/s))
General gas law
Sulfuric acid
Exactly 180 degrees
32. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear
161
White
Trapezoid
A solution
33. A parallelogram with four equal sides
A. sine of 90
hexagon
Problem solving order
Rhombus
34. Pre- construction - shows graphically the mechanical design engineer's work - during construction - proper location - reference to all equipment - after construction - training reference anddetails of process - utility and electrical systems
Material balance
Stress corrosion cracking
Power
Purpose of P & IDs
35. 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
A Greek letter alpha linear
Stroke
Boyle's law
36. The factor of safety is always expressed...
179.02
Toughness
As a ratio
Cathodic protection system
37. The most common scale in use is the...
Celsius
A / SinA = b / SinB = c / SinC
57.48 mm
Exactly 180 degrees
38. The most common thread used in North America on fasteners such as bolts - is the...
Unified National
Heating and cooling white cast iron at a controlled rate
Celsius
polytropic
39. Energy can be...
161
Transformed to different forms
hardness
179.02
40. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain
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41. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
Sensible heat
Permanent and removable
161
Specific heat
42. The ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface u = tan(thada) - coefficient of friction is equal to the tangent of friction angle
Trapezoid
4.4 m/s
Areas of sectors (bounded by 2 radii and arc between them)
Coefficient of friction
43. The ratio of the density of a substance to the density of a standard substance at the same temperature and pressure - the ratio of the density of the substance to the density of the substance to the density of water
Resultant
benefits of chromium - nickel and copper in alloy steels
Relative density
Falling temperature
44. Steam turbine bearings are usually made of...
White metal and bronze
110.6 kPa
Work
Heat engines
45. Straight angle
A
Rhomboid
Exactly 180 degrees
520.72 kJ/kg
46. Means that the sum of the matter leaving the plant equals the sum of the matter entering
A number with the necessary unit
brinell hardness test
70 MPa
Material balance
47. Micro organisms promote corrosion...
Stroke
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
0.0002
Ultimate stress/working stress
48. A pinch of salt is added to a glass of water. The result is...
A solution
Scalene triangle
Trapezoid
0.0002
49. Orthographic projection means...
Conditions required to produce sulphide corrosion cracking
View of a cutting plane
A
General gas law
50. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known
Pm x A x L
Areas of sectors (bounded by 2 radii and arc between them)
Trapezium
Increase