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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. A straight line that joins 2 points or circumference
Chord
One
Transformed to different forms
Hooke's Law
2. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
Isothermal
Calorimetry
distance
Stroke
3. 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.
10.8 m N of W
brinell hardness test
hexagon
effective pressure
4. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
A solution
Less than 90 degrees
Chlorides
velocity
5. 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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6. When the co- efficient of friction increases and the force between two surfaces remains constant - the friction force will
Mass
Work
Increase
Tangent
7. H2SO4 is the chemical formula for...
Specific heat
Hooke's Law
Trapezoid
Sulfuric acid
8. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)
Naperian (Natural) logarithms
latent heat of evaporation (vaporation)
elasticity
One
9. 1. In a right angle triangle - the sine of an acute angle is equal to...
Sulfuric acid
benefits of chromium - nickel and copper in alloy steels
Opposite side / hypotenuse
polygon
10. coefficient of expansion
General gas law
520.72 kJ/kg
One
A Greek letter alpha linear
11. Stainless fails due to...
0.89
Output power(W)/input power(W)
Rhombus
Chlorides
12. The amount of heat required to completely melt 25 kg of ice from a temperature of -10
Specific heat
Output power(W)/input power(W)
Complementary angles
8908 kJ
13. One is the trigonometric value of...
To calculate power from an engine
Heat engines
Details of P & IDs
A. sine of 90
14. Any two angles whose sum is 90
Pm x A x L
Specific heat
Complementary angles
A. sine of 90
15. A 10 m long steel pipe when heated to increase its temperature by 85
Specific heat
8908 kJ
1 cm
Value of the angle increases
16. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known
Hooke's Law
Areas of sectors (bounded by 2 radii and arc between them)
Permanent and removable
More than 90 degrees
17. Kinetic energy (Ek)
1/2mv2 (kg x velocity(m/s))
General gas law
brinell hardness test
Cathodic protection system
18. 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
That is supported at two ends
benefits of chromium
Charles Law
Dividing the ultimate strength by the factor of safety
19. As the cosine decreases - the...
Value of the angle increases
View of a cutting plane
Stroke
A. sine of 90
20. 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
elasticity
A
Ammonia
21. PVn(super script n) = C
polytropic
benefits of chromium
4.4 m/s
Transformed to different forms
22. The classes of fastening devices are...
Value of the angle increases
Permanent and removable
45 kN
Areas of sectors (bounded by 2 radii and arc between them)
23. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...
Celsius
Stress corrosion cracking
70 MPa
Sensible heat
24. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
Hooke's Law
Chord
View of a cutting plane
0.89
25. A 1 N weight has a kinetic energy of 1 J when its speed is...
A
4.4 m/s
distance
Cathodic protection system
26. The temperature of saturated steam vapor at 980 kPa is...
161
Charles Law
basic oxygen process
179.02
27. The most common material used in making large industrial diesel engine pistons is...
70 MPa
Cast iron
benefits of chromium - nickel and copper in alloy steels
Celsius
28. Is the amount of heat/energy required to increase or decrease the temperature of any given substance's unit mass 1 degree Celsius
Permanent and removable
A
Specific heat
Material balance
29. A pinch of salt is added to a glass of water. The result is...
Ideal mechanical advantage
A solution
Greater than 180 degrees
Charles Law
30. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
More than 90 degrees
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Mass
26.81 m/s
31. Being made of 2 or more substances creating unique characteristics and properties when combine
2.3026
Chlorides
Latent heat of evaporation
Composite material
32. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
179.02
0.0002
Resultant
Total heat required for change of state
33. 1.not showing temperatures or pressures 2. piping ID numbers and sizing 3. all instrumentation 4. piping details
Gamma - coefficient of superficial = 2x coefficient of linear expansion
Details of P & IDs
Work
Output power(W)/input power(W)
34. The factor of safety is always expressed...
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Boyle's law
brinell hardness test
As a ratio
35. Orthographic projection means...
Purpose of material balance
10.8 m N of W
0.0002
View of a cutting plane
36. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal
Stray current corrosion
Cast iron
Adiabatic
dryness fraction
37. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
Calorimetry
Be the same at any point in the process
Opposite side / hypotenuse
Continuity flow
38. Steam turbine bearings are usually made of...
View of a cutting plane
26.81 m/s
Calorimetry
White metal and bronze
39. Pythagoras' Theorem
polygon
A = 4/3h2 [(square root)d/h-0.608]
A
Stress corrosion cracking
40. Ratio of the opposite to the adjacent side of a right- angled triangle
Tangent
hexagon
Greater than 180 degrees
2.3026
41. When calculating the ultimate stress of a material - we should
Mass
Resultant
water equivalent
Divide the maximum load by the original cross - sectional area
42. Work per power stroke (J)
Pm x A x L
The specific heat of the material
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
dryness fraction
43. 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
Specific heat
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
benefits of chromium
Malleability
44. A closed plane figure bounded by straight sides
Cast iron
polygon
0.0002
Process flow drawing
45. Right angle
More than 90 degrees
White metal and bronze
One angle is exactly 90 degrees
benefits of chromium
46. According to Hooke's Law - the stress in an elastic body is directly proportional to the strain if...
The elastic limit of the material is not exceeded
Sulfuric acid
Adiabatic
Permanent and removable
47. PV=nRT - Boyle's law and Charle's law combined
Output power(W)/input power(W)
Pm x A x L
General gas law
A = 4/3h2 [(square root)d/h-0.608]
48. Malleable cast iron is produced by...
Heating and cooling white cast iron at a controlled rate
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Purpose of material balance
Continuity flow
49. Obtuse angle
Relative density
Ideal mechanical advantage
More than 90 degrees
Conditions required to produce sulphide corrosion cracking
50. 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
0.0723
Heat engines
benefits of chromium - nickel and copper in alloy steels
Purpose of material balance