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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. Negative terminal of the rectifier must always be connected to the structure that is being protected
Isothermal
Exactly 180 degrees
Chord
Cathodic protection system
2. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10
1/2mv2 (kg x velocity(m/s))
Charles Law
As a ratio
110.6 kPa
3. Pythagoras' Theorem
Hooke's Law
110.6 kPa
A
Mechanical flow diagrams
4. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
effective pressure
A
57.48 mm
110.6 kPa
5. Copper fails due to...
Work
Unified National
Ammonia
0.0723
6. 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
displacement
Increase
Sulfuric acid
ellipse
7. The temperature of saturated steam vapor at 980 kPa is...
benefits of chromium - nickel and copper in alloy steels
Ultimate stress/working stress
179.02
Isothermal
8. Acute angle
benefits of chromium
Mass x acceleration (N)
Less than 90 degrees
displacement
9. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
A. sine of 90
Sensible heat
Specific heat
ellipse
10. A 10 m long steel pipe when heated to increase its temperature by 85
1 cm
Falling temperature
8908 kJ
White metal and bronze
11. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies
Chord
White metal and bronze
Purpose of material balance
The equilibrant
12. Force - work done - power - mechanical efficiency
Problem solving order
Cast iron
Permanent and removable
Boyle's law
13. The term _____ is used as a measure of the quantity of matter.
Adiabatic
Mass
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
10.8 m N of W
14. Malleable cast iron is produced by...
Boyle's law
Heating and cooling white cast iron at a controlled rate
Chord
View of a cutting plane
15. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
Areas of sectors (bounded by 2 radii and arc between them)
Be the same at any point in the process
A. sine of 90
Work
16. coefficient of expansion
A Greek letter alpha linear
Complementary angles
displacement
1/2mv2 (kg x velocity(m/s))
17. The most common material used in making large industrial diesel engine pistons is...
Cast iron
benefits of copper
2.3026
ellipse
18. The most common scale in use is the...
Celsius
Details of P & IDs
One
1/2mv2 (kg x velocity(m/s))
19. Ability to withstand deformation above elastic limit under compression without failure
Coefficient of friction
Purpose of P & IDs
Malleability
Exactly 180 degrees
20. A straight line that joins 2 points or circumference
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
The equilibrant
A twisting or turning effect
Chord
21. A closed plane figure bounded by straight sides
ellipse
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
polygon
Heat engines
22. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
Mass x acceleration (N)
velocity
Unified National
Resultant
23. Sine Rule
hardness
White metal and bronze
A / SinA = b / SinB = c / SinC
Stress corrosion cracking
24. 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
Dividing the ultimate strength by the factor of safety
Transformed to different forms
Continuity flow
26.81 m/s
25. Steam turbine bearings are usually made of...
Scalene triangle
Dividing the ultimate strength by the factor of safety
White metal and bronze
Purpose of P & IDs
26. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation
Purpose of P & IDs
Total heat required for change of state
The equilibrant
Sulfuric acid
27. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
26.81 m/s
The specific heat of the material
Unified National
Naperian (Natural) logarithms
28. Micro organisms promote corrosion...
latent heat of evaporation (vaporation)
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Value of the angle increases
161
29. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will
Mechanical flow diagrams
Power
Increase
Coefficient of friction
30. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion
Tangent
benefits of chromium - nickel and copper in alloy steels
Calorimetry
displacement
31. PV=nRT - Boyle's law and Charle's law combined
161
General gas law
benefits of chromium - nickel and copper in alloy steels
Ideal mechanical advantage
32. The force that is equal in magnitude but opposite in direction to the resultant force is called
Cathodic protection system
Conditions required to produce sulphide corrosion cracking
The equilibrant
distance
33. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
0.89
Isothermal
1/2mv2 (kg x velocity(m/s))
Hooke's Law
34. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius
One
Stray current corrosion
Specific heat
Greater than 180 degrees
35. 1. In a right angle triangle - the sine of an acute angle is equal to...
A twisting or turning effect
Process flow drawing
Opposite side / hypotenuse
Charles Law
36. Energy can be...
Tangent
Stroke
Resultant
Transformed to different forms
37. PFDs
Cathodic protection system
More than 90 degrees
Transformed to different forms
Process flow drawing
38. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known
ellipse
Areas of sectors (bounded by 2 radii and arc between them)
Heat engines
Malleability
39. The factor of safety is always expressed...
As a ratio
elasticity
linear motion relationships
More than 90 degrees
40. Of a process or change taking place at constant temperature - PV = C
45 kN
A = 4/3h2 [(square root)d/h-0.608]
Process flow drawing
Isothermal
41. The act or process of measuring
benefits of copper
2.3026
Mensuration
Mass x acceleration (N)
42. The heat required to raise the temperature of water at a pressure of 225 kPa from 0
Adiabatic
Divide the maximum load by the original cross - sectional area
520.72 kJ/kg
A Greek letter alpha linear
43. 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.
brinell hardness test
Specific heat
The specific heat of the material
distance
44. In the equation 0.004 + D = 0.0042 - the value of D is...
Ammonia
Conditions required to produce sulphide corrosion cracking
0.0002
179.02
45. Protons have a mass number of...
One
General gas law
57.48 mm
Falling temperature
46. 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% -
A / SinA = b / SinB = c / SinC
benefits of nickel
Pm x A x L
0.0723
47. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
Complementary angles
A. sine of 90
Stroke
Mensuration
48. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second
Relative density
To calculate power from an engine
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
General gas law
49. Ratio of the opposite to the adjacent side of a right- angled triangle
A solution
161
Tangent
Output power(W)/input power(W)
50. Work per power stroke (J)
Naperian (Natural) logarithms
A. sine of 90
Pm x A x L
Tangent