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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. Whether a material will break under sudden impact or hard blow
White metal and bronze
A Greek letter alpha linear
Toughness
More than 90 degrees
2. 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...
One angle is exactly 90 degrees
Hooke's Law
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
10.8 m N of W
3. One is the trigonometric value of...
Areas of sectors (bounded by 2 radii and arc between them)
A. sine of 90
Power
Value of the angle increases
4. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel
Ultimate stress/working stress
basic oxygen process
Scalene triangle
A / SinA = b / SinB = c / SinC
5. The force that is equal in magnitude but opposite in direction to the resultant force is called
57.48 mm
Latent heat of evaporation
A = 4/3h2 [(square root)d/h-0.608]
The equilibrant
6. The most common material used in making large industrial diesel engine pistons is...
Pm x A x L
Specific heat
Cast iron
A = 4/3h2 [(square root)d/h-0.608]
7. 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.
4.4 m/s
Specific heat
One angle is exactly 90 degrees
brinell hardness test
8. A pinch of salt is added to a glass of water. The result is...
Falling temperature
Heating and cooling white cast iron at a controlled rate
Tangent
A solution
9. Being made of 2 or more substances creating unique characteristics and properties when combine
Stray current corrosion
water equivalent
Exactly 180 degrees
Composite material
10. 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
Process flow drawing
Mensuration
General gas law
0.0723
11. Ability to withstand deformation above elastic limit under compression without failure
Malleability
Composite material
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
As a ratio
12. Change in tempereature where no heat in transferred - PV(supercript v) = C
Adiabatic
Tangent
1 cm
Cathodic protection system
13. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
basic oxygen process
White
Trapezoid
57.48 mm
14. Copper fails due to...
Pm x A x L
dryness fraction
Ammonia
Isosceles triangle
15. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.
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16. A triangle with no two sides of equal length
Adiabatic
Scalene triangle
Specific heat
Power
17. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
Conditions required to produce sulphide corrosion cracking
Continuity flow
Sensible heat
hardness
18. coefficient of expansion
70 MPa
A Greek letter alpha linear
ellipse
Chlorides
19. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
Rhombus
Stroke
Sulfuric acid
linear motion relationships
20. 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
ellipse
Dividing the ultimate strength by the factor of safety
Output power(W)/input power(W)
0.0723
21. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion
Purpose of P & IDs
Celsius
benefits of chromium - nickel and copper in alloy steels
One
22. When classifying beams - the term simple beam refers to a beam
Heating and cooling white cast iron at a controlled rate
A twisting or turning effect
Specific heat
That is supported at two ends
23. Area of a segment
10.8 m N of W
displacement
0.0723
A = 4/3h2 [(square root)d/h-0.608]
24. A gas occupies 8.62 m3 at 1800 kPa and 26
A
Complementary angles
8908 kJ
161
25. The precise measurement of heat flow out of a system for chemical and physical processes
A
benefits of chromium
Calorimetry
Heating and cooling white cast iron at a controlled rate
26. The moment of a force about a point is...
520.72 kJ/kg
A twisting or turning effect
Permanent and removable
57.48 mm
27. If 10 m3 of a gas at a pressure of 20 kPa (gauge) and a temperature of 10
Less than 90 degrees
benefits of copper
Latent heat of evaporation
110.6 kPa
28. A 10 m long steel pipe when heated to increase its temperature by 85
1 cm
Pm x A x L
Stress corrosion cracking
161
29. 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
View of a cutting plane
Pm x A x L
Charles Law
Isothermal
30. Stainless fails due to...
Purpose of P & IDs
Chlorides
Problem solving order
1/2mv2 (kg x velocity(m/s))
31. Safe working stress is determined by...
brinell hardness test
Dividing the ultimate strength by the factor of safety
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Increase
32. A straight line that joins 2 points or circumference
Chord
Toughness
benefits of copper
ellipse
33. Energy can be...
White
Transformed to different forms
520.72 kJ/kg
Ultimate stress/working stress
34. A closed plane figure bounded by straight sides
Dividing the ultimate strength by the factor of safety
polygon
Trapezoid
Calorimetry
35. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
Exactly 180 degrees
Celsius
Mensuration
Heat engines
36. A parallelogram with adjacent sides of unequal lengths
Relative density
benefits of chromium
Mass
Rhomboid
37. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2
hexagon
Heat engines
The equilibrant
Boyle's law
38. The temperature of saturated steam vapor at 980 kPa is...
179.02
Celsius
Calorimetry
Complementary angles
39. 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
26.81 m/s
Coefficient of friction
benefits of chromium
8908 kJ
40. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
White
Stress corrosion cracking
Stray current corrosion
M x g x h (kg x 9.81 m/s/s x height (m))
41. The most common scale in use is the...
Adiabatic
Charles Law
179.02
Celsius
42. The factor of safety is always expressed...
As a ratio
Purpose of material balance
Trapezium
linear motion relationships
43. Of a process or change taking place at constant temperature - PV = C
179.02
45 kN
Isothermal
White metal and bronze
44. Is 'the equivalent mass of water that would require the same amount of heat transfer as the substance - to produce the same temp. change
water equivalent
Cathodic protection system
10.8 m N of W
0.0002
45. Negative terminal of the rectifier must always be connected to the structure that is being protected
2.3026
4.4 m/s
Cathodic protection system
Material balance
46. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
Mechanical flow diagrams
Be the same at any point in the process
As a ratio
dryness fraction
47. 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
Stroke
Tangent
Cathodic protection system
displacement
48. The classes of fastening devices are...
hexagon
Falling temperature
Permanent and removable
Isothermal
49. Work per power stroke (J)
Pm x A x L
A twisting or turning effect
Naperian (Natural) logarithms
8908 kJ
50. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...
Rhombus
The equilibrant
Material balance
The elastic limit of the material is not exceeded