EVALUATION EXAM 8 (PEC & EE LAWS, Thermodynamics and Fluid Mechanics) Flashcards by Pauline Peralta

To designate, limited to warning against starting, use of, or the movement of equipment which is under repair or being worked upon.
A. Blue
B. Green
C. Orange
D. Purple with Yellow

A. Blue

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A disconnecting means shall be located within sight from the motor controller.
A. manufacturing rule
B. wiring design rule
C. construction rule
D. installation rule

D. installation rule

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The color reserved for use in equipment grounding conductor is _________.
A. Black
B. Green
C. Yellow
D. White

B. Green

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Which location may be temporarily subject to dampness or wetness?
A. Dry
B. Wet
C. Moist
D. Damp

A. Dry

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DMC stands for _____.
A. Distribution Management Committee
B. Distribution Management Code
C. Distribution Management Commission
D. Distribution Management Cooperative

A. Distribution Management Committee

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NGCP warns _____ alert if tropical disturbance within 24 hours.
A. Yellow
B. Blue
C. Red
D. Weather Disturbance

B. Blue

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The wire of maximum operating temperature up to 75 degree Celsius is ______.
A. TW
B. THWN
C. THHN
D. USE

B. THWN

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What is PDC stands for in EPIRA?
A. Philippine Distribution Commission
B. Philippine Distribution Committee
C. Philippine Distribution Code
D. Philippine Distribution Coordination

C. Philippine Distribution Code

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“The earth” best defines of which of the following term?
A. Ground
B. Grounded Conductor
C. Grounding Electrode
D. Bonding

A. Ground

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When wrapping a splice with both rubber and friction tape, the main purpose of the friction tape is to _______.
A. provide extra insulation
B. build up the insulation to the minimum thickness required
C. protect the rubber tape
D. provide a waterproof seal

C. protect the rubber tape

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What is the weight percent of engineering sciences and allied subjects?
A. 40
B. 45
C. 30
D. 25

C. 30

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The color to designate dangerous parts of machines or energized equipment
A. Red
B. Orange
C. Blue
D. Yellow

B. Orange

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Which of the following is TRUE for fluid?
A. It has a very regular molecular structure.
B. It cannot sustain a shear force in motion.
C. It cannot sustain a shear force at rest.
D. It is liquid only

C. It cannot sustain a shear force at rest.

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What is the absolute velocity of a real fluid at a surface?
A. the same as the bulk fluid velocity
B. the velocity of the surface
C. proportional to the smoothness of the surface
D. proportional to the kinematic viscosity of the fluid

B. the velocity of the surface

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Commercially used pressure measuring device today is _____.
A. Manometer
B. Kelvin gauge
C. Barometer
D. Bourdon Tube gauge

D. Bourdon Tube gauge

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In a combustion chamber, fuel is burned to raise the temperature of the medium prior to production of work through an expansion process. The heat generated during the combustion reaction is the _____.
A. heat of formation
B. heat of vaporization
C. specific heat
D. heat of reaction

D. heat of reaction

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What refers to the measure of the disorder represent in a given substance or system?
A. Enthalpy
B. Entropy
C. Heat Capacity
D. Molar Heat

B. Entropy

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Which of the following relationship defines enthalpy?
A. h = pv + T
B. h = u + pu
C. h = + p/v
D. h = u + p/T

h = u + pu ; The updated board exam question corrected this so choose the corrected version that is, h = u + pV

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Which of the following statements about work for a quasi-equilibrium process is incorrect?
A. The differential work is inexact
B. Work is area under a P-T diagram
C. Work is a path function
D. Work is always zero for a constant-volume process

B. Work is area under a P-T diagram

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Which of the following can be considered a control volume system?
A. Compression of air in a sealed balloon by squeezing
B. The Goodyear Blimp during flight
C. Expansion of gas cylinder after combustion
D. Filling a car tire with air at a service station

D. Filling a car tire with air at a service station

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Which of the following is the basis for Bernoulli’s law of fluid flow?
A. principle of conservation of mass
B. Continuity equation
C. principle of conservation of energy
D. Colebrook equation

C. principle of conservation of energy

What type of thermodynamics system that allow energy to cross the system boundary but does NOT allow the mass to cross the boundaries of the system?
A. insulated system
B. open system
C. isolated system
D. closed system

D. closed system

Which of the following ratio is correct in providing a physical meaning for the Reynolds number?
A. Inertial force/viscous force
B. Buoyant force/inertial force
C. Viscous force/inertial force
D. Drag force/viscous force

A. Inertial force/viscous force

First law of thermodynamics is also known as ________.
A. Conservation of Heat
B. Conservation of Energy
C. Heat Transfer
D. Utilization of Energy

B. Conservation of Energy

A leak from a faucet comes out in separate drops. Which of the following is the main cause of this phenomenon? A. Air resistance B. Viscosity of fluid C. gravity D. surface tension

D. surface tension

Which of the following is TRUE for a propeller-type impeller centrifugal pump? A. The head developed is due to the push of the vanes and flow is almost entirely axial. B. The head developed cannot be determined by the rotation of the vanes. C. The head developed is due to the rotation of the impeller. D. The head developed is due to the action of centrifugal force.

A. The head developed is due to the push of the vanes and flow is almost entirely axial.

Which one of the following is standard temperature and pressure (STP)? A. 0 K and one atmosphere pressure B. 32°F and zero pressure C. 0°F and zero pressure D. 0°C and one atmosphere pressure

D. 0°C and one atmosphere pressure

This law of thermodynamics states that "Energy cannot be created nor destroyed". A. Zeroth Law B. First Law C. Second Law D. Third Law

B. First Law

What is the value of the work done for a closed, reversible isometric system? A. zero B. positive C. negative D. either positive or negative

A. zero

The instrument used to measure small pressure. A. Venturi B. Bourdon tube gauge C. Manometer D. Orifice

C. Manometer

The negative sign for a gage reading is called A. transmission of pressure B. vapor of pressure C. vacuum pressure D. pressure head

C. vacuum pressure

What system in which neither mass nor energy cross the boundaries and is not influenced by the surroundings. A. Open System B. Isolated System C. Closed System D. All of these

B. Isolated System

The total entropy of pure substances approaches zero as the absolute thermodynamic temperature approaches zero A. Newton's Second Law of Motion B. Newton's Third Law of Motion C. Second Law of Thermodynamics D. Third Law of Thermodynamics

D. Third Law of Thermodynamics

Which of the following is used for thermal power plant? A. Brayton Cycle B. Reversed Carnot Cycle C. Rankine Cycle D. Otto Cycle

C. Rankine Cycle

What system in which there is no exchange of matter with the surrounding or mass does not cross its boundaries? A. Open System B. Closed System C. Isolated System D. Nonflow System

B. Closed System

What refers to the thermodynamic properties which are dependent on the amount of the substance present? A. Extensive B. Intensive C. Reversible D. Irreversible

A. Extensive

What is known as the total heat and heat content at various times in the history? A. Enthalpy B. Entropy C. Internal Energy D. Latent heat

A. Enthalpy

What law states that the pressure of gas is inversely proportional to its volume at constant temperature? A. Boyle's Law B. Dalton's Law C. Gay Lussac's Law D. Charles's Law

A. Boyle's Law

Which of the following cannot be a property of a gas? A. density B. pressure C. viscosity D. temperature

C. viscosity

Which of the following is the least efficient? A. Gas Turbine B. Diesel Engine C. Carnot Engine D. Gasoline Engine

D. Gasoline Engine

What is another term used for isometric process? A. isochoric B. polytropic C. Isothermal D. Reversible

A. isochoric

This law of thermodynamics states that if two systems are in thermal equilibrium with a third system, then the two systems are in thermal equilibrium with each other A. Zeroth law B. First law C. Second Law D. Fourth law

A. Zeroth law

How does an adiabatic process compare to an isentropic process? A. adiabatic: heat transfer = 0; isentropic: heat transfer not equal to zero B. adiabatic: heat transfer not equal to zero; isentropic: heat transfer = 0 C. adiabatic: reversible; isentropic: not reversible D. both heat transfer = 0; isentropic: reversible

D. both heat transfer = 0; isentropic: reversible

Under what conditions is mass conserved in fluid flow? A. The fluid is baratropic B. The flow is isentropic C. The flow is adiabatic D. It is always conserved

It is always conserved

If the shear stress in a fluid varies linearly with the velocity gradient, which of the following describes the fluid? A. It is a perfect gas. B. It is at constant temperature C. It is inviscid D. It is a Newtonian Fluid

D. It is a Newtonian Fluid

This principle states that "Where the velocity of a fluid is high, the pressure is low, and where the velocity is low, the pressure is high". A. Archimedes Principle B. Torricelli's Theorem C. Flow Principle D. Bernoulli's Principle

D. Bernoulli's Principle

Which of the following is NOT an extensive property? A. Kinetic Energy B. Momentum C. Mass D. Density

D. Density

A process in which pressure is constant A. Isobaric B. Isochoric C. Isometric D. Isothermal

A. Isobaric

Which of the following about a streamline is most accurate? A. It is the path of a fluid particle. B. It is a line normal to the velocity vector everywhere. C. It is fixed in space in steady flow. D. It is defined for nonuniform flow only.

C. It is fixed in space in steady flow.

What is the definition of pressure? A. area/force B. lim force ->0 force/area C. lim area ->0 force/area D. lim force ->0 area/force

C. lim area ->0 force/area

What is NOT a basic component of motion of a fluid element? A. Translation B. rotation C. angular distortion D. twist

D. twist

In estimating the loading of a branch circuit, what loading shall be used for each receptacle? A. 200 VA B. 180 VA C. 150 VA D. 160 VA

180 VA