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. P & IDs
Charles Law
1. have a basic effect 2. have an acid effect 3. be neutral 4. change red litmus paper blue
Mechanical flow diagrams
basic oxygen process
2. Force - work done - power - mechanical efficiency
70 MPa
View of a cutting plane
Problem solving order
Boyle's law
3. Force
Mass x acceleration (N)
Total heat required for change of state
M x g x h (kg x 9.81 m/s/s x height (m))
Exactly 180 degrees
4. Orthographic projection means...
Ideal mechanical advantage
View of a cutting plane
Dividing the ultimate strength by the factor of safety
Permanent and removable
5. If a right- angle triangle has an angle of 28O 37' and the hypotenuse is 120 mm - the length of the opposite side is...
A. sine of 90
57.48 mm
White metal and bronze
Permanent and removable
6. The moment of a force about a point is...
A twisting or turning effect
ellipse
polygon
Pm x A x L
7. A pinch of salt is added to a glass of water. The result is...
A solution
hardness
To calculate power from an engine
10.8 m N of W
8. 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
The equilibrant
Output power(W)/input power(W)
Trapezium
9. 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.
Charles Law
Unified National
brinell hardness test
The equilibrant
10. Whether a material will break under sudden impact or hard blow
57.48 mm
Toughness
0.0002
benefits of nickel
11. The amount of stretch or compression of an elastic material is directly proportional to the applied force - stress = E (modulus of elasticity) x Strain
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
12. Acute angle
Less than 90 degrees
hexagon
Ultimate stress/working stress
4.4 m/s
13. A parallelogram with adjacent sides of unequal lengths
Composite material
1 cm
Rhomboid
Specific heat
14. PVn(super script n) = C
Specific heat
polytropic
10.8 m N of W
effective pressure
15. H2SO4 is the chemical formula for...
Rhomboid
Sulfuric acid
brinell hardness test
hardness
16. Quantity of heat required to change the temp of a unit mass of a substance by 1 degree
A = 4/3h2 [(square root)d/h-0.608]
Malleability
hexagon
Specific heat
17. Velocity ratio is...
Latent heat of evaporation
Conditions required to produce sulphide corrosion cracking
Ideal mechanical advantage
Details of P & IDs
18. Ratio of the opposite to the adjacent side of a right- angled triangle
10.8 m N of W
Tangent
Isothermal
displacement
19. The rate at which heat flow through a slab of a material does not depend on...
polygon
1 cm
4.4 m/s
The specific heat of the material
20. Reflex angle
velocity
Greater than 180 degrees
latent heat of evaporation (vaporation)
Mass x acceleration (N)
21. A quadrilateral with no parallel sides
Total heat required for change of state
Trapezium
Mechanical flow diagrams
A
22. 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
Ultimate stress/working stress
Coefficient of friction
The equilibrant
A
23. The factor of safety is always expressed...
As a ratio
Transformed to different forms
1 cm
161
24. Copper fails due to...
Ammonia
Work
Mechanical flow diagrams
Chlorides
25. Pm = mean effective pressure (Pa) - A= area of piston (m2) - L= length of stroke (m) - N= number of power strokes per second
57.48 mm
0.0723
To calculate power from an engine
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
26. When classifying beams - the term simple beam refers to a beam
That is supported at two ends
A. sine of 90
Under deposit corrosion - enhanced oxygen generation - contact of live organisms
Be the same at any point in the process
27. When heat is supplied to a liquid in sufficient quantity to change the liquid to a vapour without changing the temperature - the heat supplied is known as...
Latent heat of evaporation
Tangent
hexagon
Process flow drawing
28. Expansion of a gas is said to be adiabatic when expansion takes place at...
A / SinA = b / SinB = c / SinC
Falling temperature
A
Continuity flow
29. The dryness fraction of steam at a pressure of 400 kPa and a heat content of 2500 kJ/kg is...
4.4 m/s
0.89
Be the same at any point in the process
Tangent
30. Use of the equation PV = a constant - means the numerical result of pressure times volume for a compression or expansion process will
The equilibrant
A
Be the same at any point in the process
Resultant
31. Sensible heat + total latent heat - mc(specific heat) x delta t + mLf/mLe - Lf = latent heat of fusion - Le = latent heat of evaporation
Specific heat
Areas of sectors (bounded by 2 radii and arc between them)
Total heat required for change of state
One
32. A parallelogram with four equal sides
Celsius
Rhombus
hardness
velocity
33. Malleable cast iron is produced by...
Charles Law
Heating and cooling white cast iron at a controlled rate
Heat engines
Ideal mechanical advantage
34. The most common scale in use is the...
Latent heat of evaporation
dryness fraction
Chlorides
Celsius
35. A 10 m long steel pipe when heated to increase its temperature by 85
Ideal mechanical advantage
1 cm
More than 90 degrees
polytropic
36. A scalar quantity is one which has only magnitude and can be fully described by...
Greater than 180 degrees
179.02
A number with the necessary unit
A Greek letter alpha linear
37. Steam turbine bearings are usually made of...
White metal and bronze
General gas law
Details of P & IDs
Heat engines
38. Is the heat being added or removed to/from a substance without a change of state - still having a changing in temp
Stroke
Sensible heat
Dividing the ultimate strength by the factor of safety
hexagon
39. Sine Rule
ellipse
linear motion relationships
A / SinA = b / SinB = c / SinC
Boyle's law
40. 1. In a right angle triangle - the sine of an acute angle is equal to...
View of a cutting plane
Opposite side / hypotenuse
Coefficient of cubical expansion is often used instead of 'volume' - coefficient of liquids only
A
41. The total direction traveled by the piston within a cylinder power stroke - if pressure is being applied during the stroke
Falling temperature
hardness
Stroke
velocity
42. 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
benefits of copper
Octagon
hardness
Relative density
43. A triangle with two equal sides
Isosceles triangle
Material balance
A
polygon
44. Work done(J)/time(second) - unit of watts - 1 watt = 1 joule/second
One
Scalene triangle
Charles Law
Power
45. A gas occupies 8.62 m3 at 1800 kPa and 26
161
45 kN
Rhombus
elasticity
46. In the equation 0.004 + D = 0.0042 - the value of D is...
1/2mv2 (kg x velocity(m/s))
0.0002
Specific heat
polygon
47. 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)
Permanent and removable
Coefficient of friction
linear motion relationships
ellipse
48. A straight line that joins 2 points or circumference
Chord
Less than 90 degrees
A solution
elasticity
49. coefficient of volumetric expansion
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
50. Factor of safety
Ultimate stress/working stress
Greater than 180 degrees
Boyle's law
One angle is exactly 90 degrees