SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second
Power
4.4 m/s
Heating and cooling white cast iron at a controlled rate
Octagon
2. PV=nRT - Boyle's law and Charle's law combined
General gas law
Mass
The equilibrant
Pm x A x L
3. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
Stroke
70 MPa
Latent heat of evaporation
Increase
4. Work per power stroke (J)
A number with the necessary unit
Latent heat of evaporation
Octagon
Pm x A x L
5. A parallelogram with four equal sides
Rhombus
Mass
Boyle's law
A. sine of 90
6. Stainless fails due to...
Chlorides
Mensuration
179.02
distance
7. Area of a segment
Power
Unified National
Complementary angles
A = 4/3h2 [(square root)d/h-0.608]
8. The rate at which heat flow through a slab of a material does not depend on...
Naperian (Natural) logarithms
A number with the necessary unit
dryness fraction
The specific heat of the material
9. The pressure that should be used when calculating power - pressure is not constant throughout a power stroke - decreases as gas/steam expands
effective pressure
70 MPa
Stress corrosion cracking
Total heat required for change of state
10. 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% -
Rhomboid
benefits of nickel
benefits of chromium
Conditions required to produce sulphide corrosion cracking
11. The factor of safety is always expressed...
Purpose of material balance
As a ratio
Heating and cooling white cast iron at a controlled rate
57.48 mm
12. Resistance to corrosion - improved properties at high and low temperatures - lowers coefficient of expansion
brinell hardness test
520.72 kJ/kg
Output power(W)/input power(W)
benefits of chromium - nickel and copper in alloy steels
13. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation
A solution
Total heat required for change of state
Stress corrosion cracking
Ultimate stress/working stress
14. Factor of safety
Be the same at any point in the process
Ultimate stress/working stress
Chord
velocity
15. 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
Specific heat
Trapezoid
Naperian (Natural) logarithms
Conditions required to produce sulphide corrosion cracking
16. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
4.4 m/s
Composite material
Mensuration
Specific heat
17. The precise measurement of heat flow out of a system for chemical and physical processes
Ultimate stress/working stress
Charles Law
Calorimetry
Mensuration
18. 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
Latent heat of evaporation
benefits of chromium
One angle is exactly 90 degrees
A solution
19. coefficient of superficial (area) expansion
0.0002
A
White
Gamma - coefficient of superficial = 2x coefficient of linear expansion
20. Expansion of a gas is said to be adiabatic when expansion takes place at...
elasticity
0.89
Unified National
Falling temperature
21. Kinetic energy (Ek)
Ammonia
Pm x A x L
1/2mv2 (kg x velocity(m/s))
Adiabatic
22. Refers to the length of the actual path over which a body travels - not concerned with direction - magnitude only
effective pressure
distance
1 cm
A. sine of 90
23. Resistance to wear - abrasion and penetration
hardness
brinell hardness test
As a ratio
velocity
24. The amount of heat required to completely melt 25 kg of ice from a temperature of -10
8908 kJ
Stroke
70 MPa
Falling temperature
25. 1. Info for sizing equipment 2.compare plant performance against design: flow rates - efficiencies - recovery efficiencies
Details of P & IDs
Purpose of material balance
displacement
0.89
26. P & IDs
distance
Chlorides
Mechanical flow diagrams
1/2mv2 (kg x velocity(m/s))
27. One is the trigonometric value of...
0.89
Stroke
A. sine of 90
161
28. 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
Isothermal
Relative density
57.48 mm
179.02
29. Reflex angle
Latent heat of evaporation
Greater than 180 degrees
Specific heat
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
30. The term _____ is used as a measure of the quantity of matter.
basic oxygen process
Mass x acceleration (N)
Chlorides
Mass
31. In the equation 0.004 + D = 0.0042 - the value of D is...
White metal and bronze
0.0002
Details of P & IDs
Toughness
32. Is the rate a body moves in a specific direction - direction must be specified - velocity(m/s) = displacement(m)/time(s)
The specific heat of the material
velocity
Work
Sulfuric acid
33. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second
velocity
Permanent and removable
Output power(W)/input power(W)
To calculate power from an engine
34. u = initial velocity (m/s) - v = final velocity (m/s) - t = time (s) - s = distance (m) - a = acceleration (m/s/s) - g = acceleration due to gravity (m/s/s)
A twisting or turning effect
Charles Law
Celsius
linear motion relationships
35. Ability to withstand deformation above elastic limit under compression without failure
Malleability
The equilibrant
A
179.02
36. A 10 m long steel pipe when heated to increase its temperature by 85
Calorimetry
dryness fraction
Sensible heat
1 cm
37. Negative terminal of the rectifier must always be connected to the structure that is being protected
Heat engines
Problem solving order
Cathodic protection system
0.0723
38. A triangle with no two sides of equal length
Material balance
Scalene triangle
Specific heat
Be the same at any point in the process
39. Any two angles whose sum is 90
Ammonia
Relative density
1/2mv2 (kg x velocity(m/s))
Complementary angles
40. The most common material used in making large industrial diesel engine pistons is...
Problem solving order
velocity
Falling temperature
Cast iron
41. The relationship between the pressure and volume of a gas at constant temperture; when volume increase - pressure decreases.
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
42. The parts/fraction of steam that is dry is called dryness fraction - o expressed as a fraction - percentage or decimal
benefits of chromium - nickel and copper in alloy steels
dryness fraction
One angle is exactly 90 degrees
520.72 kJ/kg
43. A automobile travels at 60 miles per hour. Expressed in metres per second - this would be equivalent to...
0.89
Continuity flow
26.81 m/s
Chlorides
44. All sides equal - all angles are equal and opposite sides parallel - divided into 6 ISOSCELES triangles - each angle in an octagon is 135 - A = 4.83s2
Octagon
Rhomboid
8908 kJ
Naperian (Natural) logarithms
45. 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
Sensible heat
Coefficient of friction
The specific heat of the material
Isosceles triangle
46. When classifying beams - the term simple beam refers to a beam
That is supported at two ends
2.3026
Exactly 180 degrees
Calorimetry
47. A gas occupies 8.62 m3 at 1800 kPa and 26
2.3026
View of a cutting plane
161
A twisting or turning effect
48. 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
0.89
Toughness
displacement
1 cm
49. A = arc length x radius / 2 - A = (pi/360) x pir2 - length of radii and angle between radii known
Ultimate stress/working stress
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
elasticity
Areas of sectors (bounded by 2 radii and arc between them)
50. Obtuse angle
Latent heat of evaporation
Material balance
A = 4/3h2 [(square root)d/h-0.608]
More than 90 degrees