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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. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Cathodic protection system
A
Details of P & IDs
Dividing the ultimate strength by the factor of safety
2. Micro organisms promote corrosion...
179.02
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Isothermal
Toughness
3. For making steal is done in a pear shaped vessel that refines molten iron from a blast furnace and scrap into steel
Sensible heat
basic oxygen process
Cast iron
distance
4. A polygon with 6 sides A = 0.433s2 for equilateral triangle - therefore a hexagon A = 6 x 0.433s2 or A = 2.6s2
hexagon
Rhombus
Areas of sectors (bounded by 2 radii and arc between them)
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
5. Sine Rule
As a ratio
Purpose of P & IDs
Celsius
A / SinA = b / SinB = c / SinC
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...
hardness
Latent heat of evaporation
10.8 m N of W
basic oxygen process
7. Any two angles whose sum is 90
Complementary angles
Problem solving order
Heating and cooling white cast iron at a controlled rate
Resultant
8. Safe working stress is determined by...
polytropic
hardness
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Dividing the ultimate strength by the factor of safety
9. As the cosine decreases - the...
Rhombus
Value of the angle increases
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
benefits of chromium - nickel and copper in alloy steels
10. One is the trigonometric value of...
Specific heat
A. sine of 90
elasticity
Isothermal
11. The rate at which heat flow through a slab of a material does not depend on...
linear motion relationships
10.8 m N of W
The specific heat of the material
Hooke's Law
12. Reflex angle
Greater than 180 degrees
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Be the same at any point in the process
1/2mv2 (kg x velocity(m/s))
13. The most common material used in making large industrial diesel engine pistons is...
57.48 mm
A solution
Cast iron
Chlorides
14. Steam engines - steam turbines - gas turbines and internal combustion engines are examples of...
Heat engines
10.8 m N of W
White metal and bronze
520.72 kJ/kg
15. Compounds classified as salts may have the following characteristics
Dividing the ultimate strength by the factor of safety
Toughness
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Process flow drawing
16. In the equation 0.004 + D = 0.0042 - the value of D is...
0.0002
benefits of copper
Material balance
Falling temperature
17. Expansion of a gas is said to be adiabatic when expansion takes place at...
General gas law
Conditions required to produce sulphide corrosion cracking
Falling temperature
0.0002
18. A gas occupies 8.62 m3 at 1800 kPa and 26
161
Hooke's Law
Power
Adiabatic
19. The amount of heat required to completely melt 25 kg of ice from a temperature of -10
polygon
Greater than 180 degrees
8908 kJ
Value of the angle increases
20. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second
ellipse
Pm x A x L x N
To calculate power from an engine
As a ratio
21. A pinch of salt is added to a glass of water. The result is...
velocity
Mensuration
A solution
45 kN
22. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
8908 kJ
Pm x A x L x N
Sulfuric acid
57.48 mm
23. Malleable cast iron is produced by...
water equivalent
Heating and cooling white cast iron at a controlled rate
Celsius
161
24. 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
Purpose of P & IDs
Resultant
A = 4/3h2 [(square root)d/h-0.608]
161
25. 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
General gas law
Relative density
Chlorides
brinell hardness test
26. Force(N) x distance(m) or W=Fd - unit of joules - 1KJ = 1000J = 1000Nm = 1KNm - 1MJ = 1000000J = 1000000NM = 1MNm
Toughness
Composite material
Work
One angle is exactly 90 degrees
27. 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?
displacement
45 kN
Problem solving order
Exactly 180 degrees
28. The most common scale in use is the...
Celsius
Chord
basic oxygen process
Chlorides
29. Being made of 2 or more substances creating unique characteristics and properties when combine
Composite material
Complementary angles
Total heat required for change of state
Calorimetry
30. Force
Pm x A x L
Exactly 180 degrees
Mass x acceleration (N)
Permanent and removable
31. PV=nRT - Boyle's law and Charle's law combined
General gas law
Rhomboid
Ideal mechanical advantage
Be the same at any point in the process
32. Protons have a mass number of...
hexagon
Hooke's Law
One
linear motion relationships
33. The precise measurement of heat flow out of a system for chemical and physical processes
Calorimetry
Less than 90 degrees
Stroke
Areas of sectors (bounded by 2 radii and arc between them)
34. 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
Calorimetry
Dividing the ultimate strength by the factor of safety
161
Charles Law
35. Orthographic projection means...
8908 kJ
Stress corrosion cracking
View of a cutting plane
Total heat required for change of state
36. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
Conditions required to produce sulphide corrosion cracking
26.81 m/s
basic oxygen process
A. sine of 90
37. Whether a material will break under sudden impact or hard blow
Gamma - coefficient of superficial = 2x coefficient of linear expansion
70 MPa
Toughness
Heat engines
38. Factor of safety
Adiabatic
brinell hardness test
One
Ultimate stress/working stress
39. The act or process of measuring
benefits of copper
More than 90 degrees
Mensuration
The elastic limit of the material is not exceeded
40. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
Stroke
Stray current corrosion
dryness fraction
Coefficient of friction
41. 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
M x g x h (kg x 9.81 m/s/s x height (m))
2.3026
Sulfuric acid
42. The classes of fastening devices are...
Permanent and removable
Divide the maximum load by the original cross - sectional area
Mechanical flow diagrams
Isosceles triangle
43. Ratio of the opposite to the adjacent side of a right- angled triangle
Tangent
A / SinA = b / SinB = c / SinC
Areas of sectors (bounded by 2 radii and arc between them)
Pm x A x L x N
44. Obtuse angle
57.48 mm
Permanent and removable
More than 90 degrees
4.4 m/s
45. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies
Purpose of material balance
Sensible heat
Less than 90 degrees
Continuity flow
46. Resistance to wear - abrasion and penetration
Specific heat
Celsius
velocity
hardness
47. A triangle with no two sides of equal length
Specific heat
A. sine of 90
View of a cutting plane
Scalene triangle
48. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.
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49. A parallelogram with adjacent sides of unequal lengths
Isothermal
A / SinA = b / SinB = c / SinC
More than 90 degrees
Rhomboid
50. Mechanical efficiency
Specific heat
Output power(W)/input power(W)
Divide the maximum load by the original cross - sectional area
To calculate power from an engine