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ESAS Terms 1
ESAS Terms 1
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1
What is the process of heating raw rubber with less amount of sulfur?
Sulfurization
Vulcanization
Raw rubberation
Polymerization
2
Which of the following is a safety device on compressor?
Relief Valve
Intercooler Relief Valve
Strainer
Overspeed Shutdown
3
In electrolysis, the anions migrate to the anode. Which of the following ions migrate to the electrode?
Acidic Ions
Neutral Ions
Cations
Basic Ions
4
A substance that losses electron during oxidation reduction process.
Catalyst
Solvent
Oxidizing Agent
Reducing Agent
5
What percent of human body is carbon?
18
24
15
20
6
Theory of atomic structure that states that no two electrons in a given atom can have the same set of 4 quantum numbers?
de Broglie
Bohr
Pauli
Heisenberg
7
Which of the following materials is NOT a Viscoelastic material?
Plastic
Metal
Glass
Concrete
8
The ores from which aluminum is obtained is
Malachite
Stibnite
Fluorite
Bauxite
9
The prescence of oil or scale on boiler tubes causes
Galvanic Action
Oxidation
Overheating
Electrolysis
10
Minimum energy needed for reaction is called
Conduction band
Valence band
Fermi Energy
Activation Energy
11
The linear portion of stress strain diagram of steel is known as
Modulus of Elongation
Yield Point
Irreversible Range
Elastic Range
12
Stress is directly proportional to strain. The constant of proporionality is called
Poisson's Ratio
Section Modulus
Factor of Safety
Young's Modulus
13
Which of the following is highly reactive in its pure form?
He
HCl
CO2
Na
14
Is a device for measuring intensities of pressure exerted by the atmosphere
Siphon
Barometer
Bourdon Gage
Venturi Meter
15
For shear stress, what is the constant of proportionality?
Shout Modulus
Share Modulus
Shear Modulus
Shark Modulus
16
The equation of the curve formed by the path of a projectile is a
Semi-circle
Momentum
Parabola
Hyperbola
17
What is the first coordination number for a Body Centered Cubic (BCC) crystal structure?
12
8
6
4
18
The electric power industry was divided into four sections by RA9136 namely: generation, transmission, distribution, and
Electricty end-users
Supply
Residential consumers
Commercial consumers
19
A description of the arrangements of atoms or ions in a material is called
Mixture
Structure
Component
Composition
20
Liquid in chemistry is
Solute
Water
Solvent
Viscosity
21
Which of the following is CORRECT regarding the sizing of the rating of over-current protective device of a circuit?
125% of the non-continuous load plus 80% of the continuous load
125% of the continuous load plus 80% of the non-continuous load
125% of the non-continuous load plus 100% of the continuous load
125% of the continuous load plus 100% of the non-continuous load
22
Which of the following is The Ideal Gas Law?
P1T1 = P2T2
V = k*(1/P)
PV = nRT
(V/T) = k
23
In a crystal structure, which is an interstitial atom?
An atom missing at a lattice point
An extra atom sitting at a non-lattice point
A different element at a lattice point
A line defect
24
When the charge of an atom becomes unbalanced, the charge atom is called
anion
a proton
a neutron
an electron
25
It is the point where the buoyant force and the centerline intersect each other.
Circumcenter
Orthocenter
Centroid
Metacenter
26
The purpose of Aluminum in steel alloying is
Brittleness
Deoxidize
Atmospheric Corrosion Resistance
Hardness and Strength
27
It is used principally of alleviating the transient pressure in large pipeline system
Standpipe
Spillway
Weir
Culverts
28
The maximum shear stress in circular shaft is directly proportional to the
Cross-Sectional Area
Speed
Polar Moment of Inertia
Diameter
29
How are elements numbered 58 to 71 in the periodic table called?
Actinons
Earth Metals
Noble Gas
Lanthanons
30
What does RA 9136 stand for?
Electrification Power Reform Act of 2001
Energization Power Reform Act of 2001
Energy Power Reform Act of 2001
Electric Power Industry Reform Act of 2001
31
What impurity in steel can cause "red shortness" which means the steel becomes unworkable at high temperature?
Phosphorus
Silicon
Sulfur
Magnesium
32
What is the chemical formula of Dinitrogen Pentoxide
N2O5
N203
N2O4
N20
33
When a solid has a crystalline structure, the atoms arranged in repeating structures called
Lattice
Crystal
Unit Cell
Magnetic Domain
34
Objects that emit their own light are called _______ bodies.
Solar
Photovoltaic
Illuminated
Luminated
35
What is used for predicting the behavior of non-ideal gases?
Expansivity Factor
Van der Waal's Factor
Compressibility Factor
Emissivity Factor
36
A metal subject to static loading at elevated temperature continue to elongate with time. What do you call this process?
Extension Rate
Expansion Rate
Creep Rate
Uncontrolled Elongation Rate
37
What are the elements that comprise vinegar?
Carbon, Hydrogen, Oxygen
Sulfur, Hydrogen, Oxygen
Phosphorus, Hydrogen, Oxygen
Carbon, Nitrogen, Oxygen
38
In the periodic table of elements, the number of new artificially prepared (synthetic) elements is
16
14
15
13
39
The usual function of disconnect switches in high voltage circuits is to
Open the circuit in the event of an overload
Open or close the circuit under load
Isolate energized buses, equipment which are not in service
Maintain continuity of service
40
A spring whose force constant is k is cut in half. Each of the new spring has a force constant of.
k
2k
k
k/2
41
The ratio of shearing stress divided by shearing strain is the coefficient of rigidity or
Modulus of Rigidity
Modulus of Elasticity
Shearing Elasticity
Shear Modulus
42
The molecules of the same composition, what are variations of atomic arrangement known as
Isomers
Polymers
Noncrystalline Structures
Monomers
43
Question in Picture
Ferroelectricity
Superconductivity
The Curie Transition
The Meissner Effect
44
Enthalpy of an ideal gas is a function of
Temperature
Internal
The product of pressure and specific volume
Entropy
45
Question in Picture
First Law of Thermodynamics
Second Law of Thermodynamics
Fourth Law of Thermodynamics
Third Law of Thermodynamics
46
The mass moment of inertia of a cylinder about its central axis perpendicular to the circular cross section is
Directly proportional to its radius
Directly proportional to its length
Independent of its length
Independent of its radius
47
What is the oxidation state of Aluminum?
+3
+2
-2
-4
48
Entropy is the measure of
The heat capacity of a substance
The change in the enthalpy of a system
Randomness or disorder
The total heat content of a system
49
Glass is said to be an amorphous material. This means that
it has no apparent crystal structure
is a supercooled vapor
it has a high melting point
it behaves like amphoteric elements
50
What is the color code of steam pipe lines?
Red
Yellow
Silver Gray
Green
51
The SI unit of atmospheric pressure is the
psi
N/m2
Atmosphere
Torr
52
Elements which generally exhibits multiple oxidation states are
Noble Gasses
Metalloids
Transition Elements
Non-metals
53
Base samples causes litmus to turn
Blue
Red
Yellow
Green
54
The ores from which zinc is obtained is
Pyrite
Magnetite
Dolomite
Sphalerite
55
Question in picture
it violates the Mechanical Energy Balance
It violates the second law of thermodynamics
It violates the first law of thermodynamics
the temperature of sea water is too low
56
An Economizer is used to
desuperheat the steam
heat the fuel oil
heat the feedwater before it enters the boiler
heat air before it enters the furnace
57
The number of atom/s per unit cell in a Face-Centered-Cubic (FCC) structure is
1
2
6
4
58
Question in Picture:
Material Safety Data Sheet
Management Safety Duty Sheet
Management Safety Data Sheet
Material Signages Data Sheet
59
What refers to a slender member which prevents parts of a structure moving to each other under compressive force?
Arch
Tie
Column
Strut
60
The purpose of copper in steel alloying is to increase
Machinability
Atmospheric Corrosion Resistance
Brittleness
Dynamic & High Temperature Strength
61
Impulse is the change in
Acceleration
Rotary Speed
Momentum
Kinetic Energy
62
The Chairman and members of the Board of Electrical Engineering are appointed by ____.
Secretary of Department of Labor and Employment
Secretary of Department of Energy
President of the Philippines
Chairman of the Professional Regulation Commission
63
Which of the following gases is classified as electronegative?
Methane
Sulfur Hexafluoride
Nitrogen
Acetylene
64
How many degrees of freedom does a coin rolling on the ground have?
Two
Six
One
Three
65
Carbon and Hydrogen containing only carbon single bond.
Alkynes
None of these
Alkanes
Alkenes
66
What is the empirical formula for nitric acid?
HNO3
NH2OH
HNO2
NH4OH
67
What element is known as the lightest metal?
Aluminum
Manganese
Magnesium
Lithium
68
Question in Picture
Standpipe
Culverts
Weir
Spillway
69
When an air entrainment agent is introduced into a concrete mix
The strength will increase
The strength will not be affected
The water cement ratio must be reduced from 10-15%
The strength will decrease
70
A compression ingnition cycle is modelled by which ideal cycle?
Ranking Cycle
Otto Cycle
Brayton Cycle
Diesel Cycle
71
Momentum is most closely related to
Potential Energy
Power
Impulse
Kinetic Energy
72
An isentropic process is one which
is reversible but not Adiabatic
is Adiabiatic and reversible
is Adiabiatic but not reversible
Occurs at Constant Pressure but not Constant Termperature
73
Which of the following thermodynamic cycles is the most efficient?
Rankine
Carnot
Combined Brayton-Rankine
Brayton
74
Question in picture
Gay-Lussac's Law
Dalton's Law
Boyle's Law
Avogradro's Law
75
Which is the strong bond between hydrogen atoms known as?
The Metallic Bond
The Covalent Bond
The Ionic Bond
The Van der Waals
76
Inward force that must be appliad on the body to keep the body rotating in circular motion
Centrifugal
Centripetal
Resisting
External
77
What is the transfer of heat due to motions of a fluid near the surface of an object?
Convection
Insulation
Radiation
Conduction
78
It is the ratio molecular weight of a polymer to the molecular weight of a single monomer.
Linear Polymer
Degree of Polymerization
Degree of Thermosetting
Copolymer
79
The heat transfer during adiabatic process is
Reversible
Dependent on Temperature
Irreversible
Zero
80
All of the following statements about the Carnot cycle are true EXCEPT
it is the most efficient cycle between any two temperatures
it is irreversible
it operates between two constant temperature reservoirs
it is a cycle in which the heat is transferred isothermally
81
Which of the following best defined the phrase "likely to become energized"?
Near energized electrical equipment
Equipment that is exposed to lightning
Failure of insulation
High-voltage equipment
82
What is a substance that cannot be decomposed into simpler substances during ordinary chemical reactions?
Elements
Atoms
Molecules
Compounds
83
What group of steels are air-hardened, medium alloy tool steels?
Group D
Group A
Group H
Group S
84
Gases, water, alcohol, and benzene are examples of
Bingham Fluids
Dilatant Fluids
Newtonian Fluids
Pseudoplastic Fluids
85
What are the Van der Waals Forces?
Weak secondary bonds between atoms
Primary bonds between atoms
Forces not present in liquids
Forces between electrons and protons
86
An object at rest may have
Potential Energy
Kinetic Energy
Velocity
Momentum
87
In deep well installation or operation, the difference between static water level and operating water level is called
Drawdown
Priming Level
Suction Lift
Clogging
88
Steel used for axles, gears, and similar parts requiring medium to high hardness and high strength is known as
High Carbon
Very High Carbon
Medium Carbon
Low Carbon
89
What overload condition that occurs near large concentrated load?
Lateral Buckling
Rotation
Superposition
Local Buckling
90
Name the process that has no heat transfer
Reversible
Isothermal
Polytropic
Isentropic
91
What is the standardized communication technique of expressing instructions to a computer?
Programming Language
Logic
Algorithm
Flow Chart
92
The change in length per unit length of a straight bar caused by a change in temperature of one degree is called
Coefficient of Temperature Elongation
Temperature Coefficient of Expansion
All of these
Coefficient of Linear Expansion
93
Prefix Peta refers to
1018
10-15
1015
1012
94
The ratio of the volume stress to the volume strain is called
All of the above
Coefficient of Volume Elasticity
Reciprocal of Compressibility
Bulk Modulus
95
The ultimate stress divided by working stress is
Moment-Shear Ratio
Poisson's Ratio
Shear-Strain Ratio
Factor of Safety
96
Salt water, rubber, iron rust are called
Molecule
Element
Chemical Compound
Mix Atom
97
Chemical symbol of Sodium Oxide.
NaO
HNO3
Na2O2
NH4OH
98
The variation of shear and moment along the longitudinal axis is visualized by
Moment-Shear Diagram
All of these
Moment-Shear-Load Diagram
Moment Load Diagram
99
Current in an electrical circuit will take ________ to return to the source.
Only the path of least resistance
Any and all paths available
A high impedance path only
The path in the earth
100
The moment of inertia of an object does not depend on
The location of the axis of rotation
Its angular speed
Its mass
Its size and shape
