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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. In the equation 0.004 + D = 0.0042 - the value of D is...
Sulfuric acid
0.0002
Hooke's Law
elasticity
2. A parallelogram with adjacent sides of unequal lengths
That is supported at two ends
1/2mv2 (kg x velocity(m/s))
Rhomboid
Cast iron
3. Kinetic energy (Ek)
As a ratio
1/2mv2 (kg x velocity(m/s))
That is supported at two ends
polytropic
4. The most common thread used in North America on fasteners such as bolts - is the...
Mechanical flow diagrams
Total heat required for change of state
Unified National
Cathodic protection system
5. PFDs
Relative density
Process flow drawing
benefits of copper
Stroke
6. A displacement of 9 m north of point A - and another of 6 m west of point A can be added to give a resultant displacement from point A of...
10.8 m N of W
57.48 mm
4.4 m/s
Output power(W)/input power(W)
7. 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% -
benefits of nickel
Trapezoid
4.4 m/s
Opposite side / hypotenuse
8. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands
Hooke's Law
Greater than 180 degrees
effective pressure
110.6 kPa
9. coefficient of volumetric expansion
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10. Negative terminal of the rectifier must always be connected to the structure that is being protected
Pm x A x L x N
Transformed to different forms
Cathodic protection system
One angle is exactly 90 degrees
11. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2
Gamma - coefficient of superficial = 2x coefficient of linear expansion
4.4 m/s
hexagon
Ammonia
12. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
Scalene triangle
Mass x acceleration (N)
Sensible heat
10.8 m N of W
13. Micro organisms promote corrosion...
hexagon
Scalene triangle
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
1/2mv2 (kg x velocity(m/s))
14. Is seen in equations involving logarithms - it means that the formula is converting from one base system to another.
water equivalent
Chord
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
2.3026
15. Reflex angle
latent heat of evaporation (vaporation)
Celsius
Greater than 180 degrees
A / SinA = b / SinB = c / SinC
16. Orthographic projection means...
View of a cutting plane
Boyle's law
26.81 m/s
Calorimetry
17. Pythagoras' Theorem
A
Tangent
Cathodic protection system
Trapezoid
18. Of a process or change taking place at constant temperature - PV = C
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Trapezoid
Purpose of P & IDs
Isothermal
19. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...
Specific heat
70 MPa
dryness fraction
2.3026
20. Malleable cast iron is produced by...
Heating and cooling white cast iron at a controlled rate
Material balance
Conditions required to produce sulphide corrosion cracking
Latent heat of evaporation
21. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies
Specific heat
Purpose of material balance
One angle is exactly 90 degrees
Value of the angle increases
22. Right angle
One angle is exactly 90 degrees
That is supported at two ends
water equivalent
Relative density
23. Change in tempereature where no heat in transferred - PV(supercript v) = C
179.02
Pm x A x L
That is supported at two ends
Adiabatic
24. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
velocity
Mass x acceleration (N)
hardness
0.89
25. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
Unified National
General gas law
Stray current corrosion
Stroke
26. One is the trigonometric value of...
Resultant
A. sine of 90
Ultimate stress/working stress
Areas of sectors (bounded by 2 radii and arc between them)
27. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
Unified National
Heating and cooling white cast iron at a controlled rate
Specific heat
Resultant
28. Cosine rule
White metal and bronze
Details of P & IDs
A
Coefficient of friction
29. 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
Charles Law
benefits of copper
The elastic limit of the material is not exceeded
30. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm
Boyle's law
Work
Celsius
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
31. 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?
45 kN
Trapezoid
Boyle's law
Complementary angles
32. 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
Coefficient of friction
A / SinA = b / SinB = c / SinC
As a ratio
Unified National
33. Being made of 2 or more substances creating unique characteristics and properties when combine
effective pressure
Composite material
Boyle's law
distance
34. 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
2.3026
179.02
0.0723
35. 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)
A twisting or turning effect
benefits of chromium - nickel and copper in alloy steels
linear motion relationships
Process flow drawing
36. 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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37. The heat required to raise the temperature of water at a pressure of 225 kPa from 0
latent heat of evaporation (vaporation)
520.72 kJ/kg
179.02
0.0002
38. The force that is equal in magnitude but opposite in direction to the resultant force is called
Total heat required for change of state
The equilibrant
110.6 kPa
Ideal mechanical advantage
39. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second
Purpose of material balance
Rhomboid
Power
Ammonia
40. coefficient of expansion
More than 90 degrees
A Greek letter alpha linear
ellipse
Opposite side / hypotenuse
41. A triangle with two equal sides
Opposite side / hypotenuse
Hooke's Law
Isosceles triangle
White metal and bronze
42. The amount of heat required to completely melt 25 kg of ice from a temperature of -10
A
8908 kJ
70 MPa
Work
43. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Power
benefits of copper
Details of P & IDs
Naperian (Natural) logarithms
44. 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
Details of P & IDs
Ultimate stress/working stress
Stress corrosion cracking
Cast iron
45. As the cosine decreases - the...
Specific heat
A. sine of 90
Pm x A x L
Value of the angle increases
46. The act or process of measuring
Mensuration
Dividing the ultimate strength by the factor of safety
Naperian (Natural) logarithms
4.4 m/s
47. A pinch of salt is added to a glass of water. The result is...
Unified National
A solution
Malleability
Heating and cooling white cast iron at a controlled rate
48. Protons have a mass number of...
1 cm
The equilibrant
One
Naperian (Natural) logarithms
49. PV=nRT - Boyle's law and Charle's law combined
General gas law
elasticity
Process flow drawing
Relative density
50. 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
Material balance
benefits of chromium
Trapezium
Total heat required for change of state