MATH AND ESAS Flashcards
Circle with same center but unequal radii
Concentric
Cylinder with elliptical cross section
Cylindroid
Line segment joining two point
Chord
Cylinder Container: Open Top
Radius = Height
Cylindrical Container: Closed
2Radius = Height
Limacon
r = a+bcosθ
Cardioid
r = a±cosθ
Lemniscate
r² = a²cosθ
Rose
r = a sin nθ and r = a cos nθ
Special Rule of Addition of Probability: P (A ∪ B) = P(A) + P(B)
Mutually Exclusive Event
Special Rule of Multiplication: P (A ∩ B) = P(A) ∙ P(B)
Independent Events
General Rule of Distribution
Bayesian Event
Normal Distribution
Empirical
Bell Shaped Distribution: P(1) - P(-1)
68% of Data
Bell Shaped Distribution: P(2) - P(-2)
95% of Data
Bell Shaped Distribution: P(3) - P(-3)
99.7% of Data
Distance of Point from Y-Axis
Abscissa
Distance of Point From x-axis
ordinate
Iceberg with density of 917 kg/m3: at what volume will it be visible
8.3%
Iceberg with density of 917 kg/m3: at what volume will it submerge
91.7%
Human Body in freshwater with density of 980 kg/m3: at what % of body will it float?
2%
Human Body in freshwater with density of 980 kg/m3: at what % of body will it submerge?
98%
A bar of uniform cross section is subject to a uniaxial tension and develops a strain in the direction of the force of 1/800. Calculate the change of volume per unit volume. Assume μ = 1/3
1/2400 inc
A bar of uniform cross section is subject to a uniaxial compression and develops a strain in the direction of the force of 1/800. Calculate the change of volume per unit volume. Assume μ = 1/3
1/2400 dec
In a spreadsheet (EXCEL), the number in cell A2 is set to 2. Then cell B2 is set to A2*4/$A$2, where $ indicates the absolute cell address. This formula is copied into cells C2 and D2. What is the value shown in cell D2?
16
Spreadsheet Excel: A3 set to 3
24
Not a method of truss analysis
Maxwell
Fluid velocity measurement
Pitot Tube
Air pressure measuring instrument
Barometer
Measure Pressure
Manometer
Measure Density
Pycnometer
Pressure of head of a liquid
PIezometer
Flow rate through a pipe
Venturi meter
Measure relative humidity
Hygrometer
Measure specific gravity
Hydrometer
Pressure measuring device today
Bourdon Tube Gauge
Straight Line Path
Laminar Flow
Random Path
Turbulent Flow
Combination of Laminar and Turbulent
Critical
Laminar FLow, Vave Fraction of Vmax in a Pipe
1/2
Laminar FLow, Vave Fraction of Vmax in a Parallel Plate
2/3
Moment Diagram: No external load
Linear
Moment Diagram: Uniform Distributed Load
Parabolic
Moment Diagram: Concentrated load at midpoint
Triangle
Maximum bending moment for simply supported beam with udl over entire length of beam if W = weight of beam and L = length of beam, is:
WL/8
Maximum bending moment for simply supported beam with udl over concentrated load of beam if W = weight of beam and L = length of beam, is:
WL/4
Maximum bending moment for simply supported beam with udl over uniform distributed load of beam if W = weight of beam and L = length of beam, is:
WL^2/8
Waves: Bending and spreading around corners
Diffraction
Waves: one medium to another
Refraction
Waves: wave bounces back after hitting a surface/boundary
Reflection
Waves: Overlapping of two or more waves
Interference
Heat absorbed
Endo
Heat Released
Exo
Transferring of Electrons
Ionic
Sharing of Electrons
Covalent
Sharing of free electrons
Metallic
Weak type of chemical bond
Van Der Waals
Available for Service but is not in operation
Cold Reserve
Operation but is not in service
Hot Reserve
Connected to bus and is ready to take a load
Spinning Reserve
Alerts: Low Contingency
Yellow
Alerts: Contingency reserve is zero
Red
Alerts: Tropical Disturbance 24hours
Blue
Alerts: Peace and Order
Security
Alerts: Load shedding in the next 30 minutes
Demand Control Immense Warning
Strengths: Highest ordinate
Ultimate
Strengths: Rupture Ordinate
Rupture
Strengths: Withstand without permanent deformation
Yield
Strengths: Maximum Strength
Tensile
Steel Used for drills, cutting tools
High Carbon Steel
Steel Used for gears, axles
Medium Carbon Steel
Steel used for structural shapes, wires, screw machine parts
Low carbon steel
Rules in Designing (Significant Changes)
Wiring Rule, Installation Rule and Manufacturing Rule
Big Persons in EE Industry: Qualified to become PRC Commissioner
PEE
Big Persons in EE Industry: Qualified to become ERC Commissioner
Lawyer
Big Persons in EE Industry: Current PRC Commissioner
Charito A. Zamora
Big Persons in EE Industry: Current Chairman of BEE
Francis Mapile
PRBEE - RESOLUTION NO. ___________________ SERIES OF 2017
18
PRC - Created Under
PD 223
PEP - PERSUANT TO
RA 7683
CPD POINTS
15
Continuous Load, Max current continue for
3 hours or more
Minimum Size of Conductor for lighting
2.0mm2
Minimum Size Connected to 40A CKT
5.5mm2
PEC 2009 IS BASED ON
NEC 2005
PEC 2017 IS BASED ON
NEC 2017
Longer Axis of Ellipse is called
PROLATE
Shorter Axis of Ellipse is called
OBLATE
Find the values of z such that e^4z = i
(π/8 )i+(kπ/2) i
e^iz is equal to
e^-3√3
Sine Angles at maximum ratio of sides
1:1:1
What is log(3-2i)
0.5570 - j0.2554
Tetrahedron Volume is
√2/12 b^3
Tetrahedron Area is
√3 b^2