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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 closed plane figure bounded by straight sides
polygon
M x g x h (kg x 9.81 m/s/s x height (m))
Value of the angle increases
dryness fraction
2. The amount of heat required to completely melt 25 kg of ice from a temperature of -10
Permanent and removable
benefits of nickel
8908 kJ
Scalene triangle
3. Right angle
White
2.3026
Specific heat
One angle is exactly 90 degrees
4. 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
Rhomboid
benefits of chromium - nickel and copper in alloy steels
Pm x A x L
0.0723
5. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
Calorimetry
More than 90 degrees
26.81 m/s
Power
6. Moist hydrogen sulphide environment - hydrogen sulphide must be present - water - even trace amount - high strength steel - steel must be under tensile stress - either applied or residual
To calculate power from an engine
Conditions required to produce sulphide corrosion cracking
A number with the necessary unit
Continuity flow
7. As the cosine decreases - the...
benefits of chromium - nickel and copper in alloy steels
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Value of the angle increases
Stress corrosion cracking
8. Aka stray current electrolysis - caused be an external source of current - non intended paths due to poor electrical conductor
Purpose of material balance
Complementary angles
Stray current corrosion
One
9. Acute angle
Ultimate stress/working stress
Less than 90 degrees
Trapezoid
Work
10. A 10 m long steel pipe when heated to increase its temperature by 85
1 cm
70 MPa
Boyle's law
520.72 kJ/kg
11. Straight angle
A. sine of 90
Exactly 180 degrees
Value of the angle increases
One angle is exactly 90 degrees
12. A straight line that joins 2 points or circumference
Tangent
Chord
70 MPa
The specific heat of the material
13. Sine Rule
Calorimetry
A / SinA = b / SinB = c / SinC
Increase
Naperian (Natural) logarithms
14. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
One
Specific heat
Boyle's law
Greater than 180 degrees
15. The rate at which heat flow through a slab of a material does not depend on...
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
Trapezoid
The specific heat of the material
Pm x A x L x N
16. Is a number that appears naturally in some higher- level mathematics is 2.71828 (correct to 5 decimal places)
Problem solving order
benefits of copper
Naperian (Natural) logarithms
White metal and bronze
17. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies
Stray current corrosion
Less than 90 degrees
Purpose of material balance
water equivalent
18. The most common material used in making large industrial diesel engine pistons is...
Adiabatic
10.8 m N of W
Cast iron
Dividing the ultimate strength by the factor of safety
19. Work per second
Output power(W)/input power(W)
Tangent
A Greek letter alpha linear
Pm x A x L x N
20. 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
Charles Law
Naperian (Natural) logarithms
Continuity flow
Process flow drawing
21. Means that the sum of the matter leaving the plant equals the sum of the matter entering
Material balance
polygon
View of a cutting plane
Sensible heat
22. 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
Sensible heat
Purpose of P & IDs
Isosceles triangle
A = 4/3h2 [(square root)d/h-0.608]
23. The term _____ is used as a measure of the quantity of matter.
Mass
Ideal mechanical advantage
57.48 mm
A twisting or turning effect
24. Expansion of a gas is said to be adiabatic when expansion takes place at...
Gamma - coefficient of superficial = 2x coefficient of linear expansion
General gas law
Hooke's Law
Falling temperature
25. A quadrilateral with two parallel sides
One angle is exactly 90 degrees
Trapezium
Resultant
Trapezoid
26. Negative terminal of the rectifier must always be connected to the structure that is being protected
Transformed to different forms
A number with the necessary unit
Cathodic protection system
benefits of nickel
27. 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.
Chlorides
A. sine of 90
brinell hardness test
4.4 m/s
28. Change in tempereature where no heat in transferred - PV(supercript v) = C
110.6 kPa
Stray current corrosion
Problem solving order
Adiabatic
29. When classifying beams - the term simple beam refers to a beam
That is supported at two ends
One
Pm x A x L x N
benefits of chromium
30. In the equation 0.004 + D = 0.0042 - the value of D is...
benefits of chromium - nickel and copper in alloy steels
0.0002
Boyle's law
A. sine of 90
31. The most common thread used in North America on fasteners such as bolts - is the...
effective pressure
Details of P & IDs
Cathodic protection system
Unified National
32. 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...
161
4.4 m/s
Octagon
10.8 m N of W
33. Stainless fails due to...
Be the same at any point in the process
Chlorides
Pm x A x L
Malleability
34. Obtuse angle
Latent heat of evaporation
More than 90 degrees
Boyle's law
polytropic
35. The working stress of a material that has an ultimate strength of 490 MPa and a safety factor of 7 would be...
70 MPa
Resultant
Octagon
Relative density
36. 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
Conditions required to produce sulphide corrosion cracking
45 kN
520.72 kJ/kg
benefits of chromium
37. 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
Mensuration
Coefficient of friction
Divide the maximum load by the original cross - sectional area
M x g x h (kg x 9.81 m/s/s x height (m))
38. The act or process of measuring
The elastic limit of the material is not exceeded
Mensuration
Relative density
Permanent and removable
39. A body can be put into equilibrium by applying an additional force equal in magnitude but opposite in direction to the...
Specific heat
Tangent
Exactly 180 degrees
Resultant
40. 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
Problem solving order
benefits of chromium
Charles Law
Exactly 180 degrees
41. The moment of a force about a point is...
70 MPa
benefits of chromium - nickel and copper in alloy steels
A twisting or turning effect
Unified National
42. Force
Output power(W)/input power(W)
Rhombus
Chord
Mass x acceleration (N)
43. Safe working stress is determined by...
Latent heat of evaporation
57.48 mm
Ultimate stress/working stress
Dividing the ultimate strength by the factor of safety
44. Work per power stroke (J)
Toughness
Opposite side / hypotenuse
Pm x A x L
Resultant
45. Four pieces of iron are heated in a furnace to high temperatures. The one at the highest temperature would appear
White
Permanent and removable
Adiabatic
161
46. Force - work done - power - mechanical efficiency
Problem solving order
Composite material
benefits of nickel
1/2mv2 (kg x velocity(m/s))
47. PV=nRT - Boyle's law and Charle's law combined
Cast iron
Scalene triangle
General gas law
The specific heat of the material
48. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
Rhombus
Sulfuric acid
velocity
The elastic limit of the material is not exceeded
49. PVn(super script n) = C
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
A number with the necessary unit
polytropic
velocity
50. A parallelogram with adjacent sides of unequal lengths
Rhomboid
Continuity flow
polygon
A = 4/3h2 [(square root)d/h-0.608]