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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.
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. Area of a segment
More than 90 degrees
elasticity
A = 4/3h2 [(square root)d/h-0.608]
Specific heat
2. 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
Ammonia
0.0723
hardness
Increase
3. The term _____ is used as a measure of the quantity of matter.
Less than 90 degrees
Mass
110.6 kPa
Hooke's Law
4. Means that the sum of the matter leaving the plant equals the sum of the matter entering
Cathodic protection system
hexagon
Material balance
Charles Law
5. Force - work done - power - mechanical efficiency
hardness
A solution
Stress corrosion cracking
Problem solving order
6. Stainless fails due to...
elasticity
Chlorides
General gas law
Hooke's Law
7. Copper fails due to...
Scalene triangle
26.81 m/s
polygon
Ammonia
8. The amount of heat required to completely melt 25 kg of ice from a temperature of -10
Details of P & IDs
8908 kJ
A / SinA = b / SinB = c / SinC
Opposite side / hypotenuse
9. 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
The equilibrant
Conditions required to produce sulphide corrosion cracking
dryness fraction
Dividing the ultimate strength by the factor of safety
10. Combines easily with many other elements - improves atmospheric corrosion resistance - increases strength - amounts of 0.15-0.25%
Toughness
Increase
Purpose of P & IDs
benefits of copper
11. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10
Sulfuric acid
110.6 kPa
Pm x A x L
Total heat required for change of state
12. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands
Stray current corrosion
Dividing the ultimate strength by the factor of safety
Isothermal
effective pressure
13. PV=nRT - Boyle's law and Charle's law combined
Work
General gas law
Octagon
70 MPa
14. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Details of P & IDs
polygon
0.89
Unified National
15. Ability to withstand deformation above elastic limit under compression without failure
General gas law
Sulfuric acid
Less than 90 degrees
Malleability
16. Right angle
2.3026
One angle is exactly 90 degrees
Mensuration
Isosceles triangle
17. 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
Exactly 180 degrees
dryness fraction
Relative density
Scalene triangle
18. Orthographic projection means...
velocity
View of a cutting plane
Greater than 180 degrees
One
19. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
benefits of chromium - nickel and copper in alloy steels
26.81 m/s
Heating and cooling white cast iron at a controlled rate
Latent heat of evaporation
20. 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
Tangent
Value of the angle increases
Purpose of P & IDs
White
21. The force that is equal in magnitude but opposite in direction to the resultant force is called
polygon
basic oxygen process
The equilibrant
Unified National
22. The temperature of saturated steam vapor at 980 kPa is...
179.02
A = 4/3h2 [(square root)d/h-0.608]
Pm x A x L x N
45 kN
23. One is the trigonometric value of...
A. sine of 90
hardness
Be the same at any point in the process
Increase
24. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...
More than 90 degrees
Latent heat of evaporation
Ultimate stress/working stress
1 cm
25. The ability to return to its original shape after an external force has been removed
More than 90 degrees
Malleability
Mechanical flow diagrams
elasticity
26. Micro organisms promote corrosion...
A Greek letter alpha linear
Work
Trapezium
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
27. The classes of fastening devices are...
A solution
Permanent and removable
General gas law
velocity
28. 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
Problem solving order
ellipse
Scalene triangle
Isothermal
29. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
Continuity flow
Pm x A x L x N
57.48 mm
Problem solving order
30. The factor of safety is always expressed...
Transformed to different forms
A twisting or turning effect
As a ratio
latent heat of evaporation (vaporation)
31. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
Hooke's Law
Tangent
hexagon
Sensible heat
32. 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
As a ratio
Mechanical flow diagrams
Continuity flow
33. P & IDs
Mechanical flow diagrams
Trapezium
One angle is exactly 90 degrees
elasticity
34. 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
The specific heat of the material
Sensible heat
Continuity flow
0.0002
35. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
Specific heat
Resultant
distance
basic oxygen process
36. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
White metal and bronze
Scalene triangle
benefits of chromium - nickel and copper in alloy steels
Stroke
37. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
benefits of nickel
Continuity flow
110.6 kPa
Heat engines
38. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.
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183
39. Work per second
Mass
White
Pm x A x L x N
Mass x acceleration (N)
40. As the cosine decreases - the...
Value of the angle increases
benefits of chromium
10.8 m N of W
4.4 m/s
41. Resistance to wear - abrasion and penetration
Trapezoid
Specific heat
hardness
benefits of nickel
42. A straight line that joins 2 points or circumference
Relative density
Sulfuric acid
Chord
Rhomboid
43. When calculating the ultimate stress of a material - we should
Pm x A x L x N
Process flow drawing
Divide the maximum load by the original cross - sectional area
brinell hardness test
44. Work per power stroke (J)
Pm x A x L
Relative density
Latent heat of evaporation
Purpose of material balance
45. Force
Chlorides
Mass x acceleration (N)
Adiabatic
45 kN
46. 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
benefits of copper
Sensible heat
The elastic limit of the material is not exceeded
47. Kinetic energy (Ek)
1/2mv2 (kg x velocity(m/s))
Greater than 180 degrees
Calorimetry
Pm x A x L x N
48. A quadrilateral with no parallel sides
Trapezium
benefits of nickel
Isosceles triangle
One angle is exactly 90 degrees
49. PFDs
View of a cutting plane
That is supported at two ends
Process flow drawing
Scalene triangle
50. Is the required to change a unit mass from a gas to liquid or liquid to a gas
White
0.0723
A Greek letter alpha linear
latent heat of evaporation (vaporation)
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