ESAS POWERLINE PREBOARD

premopremo remo · 75問 · 2年前

通報

問題一覧

Point at which solid, liquid and vapor forms of a substance simultaneously exist

Triple

A hygrometer is an instrument to measure

relatice humidity

How does an adiabatic process compare to an isentropic process

both: heat transfer = 0; isentropic: reversible

A large class of devices (such as turbines, centrifugal compressors and pumps) involves work. Assuming reversible steady-state, steady-flow process with negligible changes in kinetic and potential energy, the elementary work is

-V dP

What cycle is use for cooling system for aircraft?

Bell coleman

A simultaneous generation of electricity and steam (or heat) in a single power plant is called:

cogeneration

The temperature of a body is 50°F, find the temperature in deg. Rankine

509.7

. How many calories are required to raise 20 kg of aluminum (Cp=0.208 BTU/lbm-°F) from 80°C 600°C?

2.163x10^6 Cal

Shaft work of -15 BTU/lb and heat transfer of -10 BTU/lb, the change of enthalpy of a system by:

A Camot engine operates between 250°F and 1200°F. What is the thermal efficiency?

57.23%

Work of a polytropic (n=1.21) compression of air (Cp/Cv = 1.40) n a system with moving boundary from P1=15 psia, V1=1.0ft^3 to P2=150 psia, V2=0.15ft^3 is

5150 ft-lb

What is the empirical formula for nitric acid?

HNO3

What is the charge of elements that belongs to group 2A (IIA)

The chemical process which occurs when water is added to cement is called

hydration

In electrolysis, the anions migrate to the anode Which of the following ions migrate to the other electrode?

Cations

In an aqueous solution, if some acid is added, its pH will

decrease

What is the percent of alcohol in a 90-proof whisky?

45%

Which of the following is not true about ideal gases?

They do not apply pressure

A sealed tank contains 27°C at a pressure of 2 atm If the temperature increases to 100°C. the pressure inside the tank will be?

2.49 atm

If the gram equivalent weight of H2SO4 is 1.22, it is dissolved in water to make 175 Liter solution. What is its Normality?

0.70 N

What field of study encompasses the procurement and production of metals?

Metallurgy

Use of copper in steel alloying

Increase atmospheric corrosion resistance

How many atoms are in the unit cell of a body-centered cubic (BCC) structure

What is the ASTM tension testing designation for standard methods for steel products?

A370

What is the generic name of a class of polymer which is commercial known as nylon?

Polyamide

What physical property of a maternal refers to the highest potential difference that an insulating material of a given thickness can withstand for a specified time without occurrence of electrical breakdown through its bulk?

Dielectric Strength

What is the SI unit of luminous intensity

candela

A thunder is heard 4 seconds after a flash of lightning appears and the temperature is 40°C How far is the source of sound? Consider speed of sound at STP is 332 m/sec

1.424 km

What is the wavelength of the sound emitted by violin string vibration 500 times per second? Assume the velocity of sound to be 1,100 m/sec

2.2 m

A lamp placed 60 cm from a lens forms an image on the screen 30 cm away from the lens on the side opposite lamp. What is the focal length of the lens?

20 cm

If the mass on a body were doubled, its acceleration due to gravity would be

unchanged

A child on a sled is sliding down the hill covered with snow. The combined mass of the child and the sled is "m", the angle of inclination of the hill is "φ" (phi), and the coefficient of kinetic friction between the snow and the sled runners is "µ" (mu). Which of these expressions gives the frictional force?

µ mg cos φ

A 100 kg block rests on a 40 deg inclined plane Neglecting friction how much pull must one exert to bring the block up?

64.3 kg

What horizontal pull is needed to move a 6 kg sled with a coefficient of friction of 0.4 and a frictional force of 20 N?

20 N

A typical jet fighter plane launched from an aircraft carrier reaches a take-off speed 175 mi/hr in a launch distance of 310 ft. How long in seconds doe's it take to launch the fighter?

2.4

A stone is dropped down a well and 5 sec later the sound of the splash is heard. If velocity of sound is 1100 ft/sec, what is the depth of the well

352.55 ft

A boy carried a weighing scale inside an elevator In what way can the boy have the same weight all throughout his ride

Moving at constant speed

A 60-kg man jumps with a speed of 1 m/sec into a 40-kg log. What is the speed of the log relative to the shore?

0.6 m/sec

Find the kinetic energy given mass of 90 kg with velocity of 5 m/sec

1125 N-m

A 10-kg, 1 meter long cylinder having 50 cm diameter was placed on a level floor, find approximate pressure exerted on the floor?

500 Pa

A steel rod with a cross-sectional area of 150 mm^2 is stretched between two fixed points. The load at 25°C is 5000 N. At what temperature will the stress be zero? Assume = 11.7×10^-6/°C and E=200 GPa

39.24°C

.A 20-mm diameter steel rod, 250 mm long is subjected to a tensile force of 75 kN. If the Poisson's ratio u is 0.30, determine the lateral strain of the rod. Use E=200 GPa

εy=-3.581×10^-4 mm/mm

A simple beam L meters long carries a concentrated load of "P" Newtons at the midspan the maximum bending moment of the beam?

PL/4

Unit of Young's Modulus

Kg/cm^2

Unit of Strain is

unitless

Which statement about area moments of inertia is FALSE?

The area moment of inertia arises whenever the magnitude of the surface force varies linearly with distance

Poisson's ratio is the ratio of the

Unit lateral deformation to the unit longitudinal deformation

What is called weight per unit volume of a substance

Specific weight

Which of the following are NOT units of pressure?

kg/m^2

The property of a fluid which determines its resistance to shearing stress is called

Viscosity

The standard atmospheric pressure is _____ kPa

101

Find gauge pressure of sea water of specific gravity of 10.1 kN/m^3 at 100 m head

1010 kPa

When a submarine dives to a depth of 120 m, to how large total pressure is its exterior surface subjected? The density seawater is about 1.03 g/cm^3

1.21 MPa

A 980kg/m^3 man is floating on fresh water. Find the percent of his volume visible?

Device used to measure the velocity of a liquid?

Pitot tube

On doubling the speed, N. of a centrifugal pump, all of the following are true, EXCEPT

Head, horsepower and volume flow rate are independently variable

Under which of the following conditions is Bernoulli's equation valid?

All of the above

An essential part of a large dam and provides an efficient and safe means of releasing flow water that exceeds the design capacity of the reservoir

Spillway

A garden hose has an inside diameter of 0.5 inch and water flows through it at 8 fps What nozzle diameter is required for water to emerge at 40 fps?

0.224 inch

What is the volume flow rate of water in Liters/sec if the power developed under a head of 400 m is 12,500 kW and the hydraulic efficiency 80%

3982

Future worth is equivalent to

P(1+i)^n

What is the effective rate of interest corresponding to 8% compounded semi-annually?

8.16%

A P2,500 loan was originally made at 8% simple interest for 4 years. At the end of this period the loan was extended for 3 years, without the interest being paid, but the new interest rate was made, 10% compounded semi-annually How much should the borrower pay at the end of 7 years?

P4,442.32

A man invests P20,000 now for the college education of his 2 year old son If fund eams 14% effective interest, how much will the son get each year starting his 18th to the 22nd Birthday

P41,583.28

What is the capitalized cost of a machine with an initial cost of P250,000.00, a maintenance cost of P10,000.00 per year, and an infinite life? The effective annual interest rate is 10%

P350,000.00

Cash-out Casinos is considering purchasing new slot machines. The Present Worth (PW) of Alternative A is Php19,437, the Annuity Worth (AW) of Alternative B is Php8 352 the Future Worth (FW) of Alternative C is Php20,439, and the Rate of Return (ROR) of Alternative D is 5% Assuming all alternatives have a 3-year useful life and that the Minimum Attractive Rate of Retum (MARR) for Cash-out is 9%. What alternative that should be chosen?

Alternative A

Which is NOT a requirement for PRBEE?

At least 40 yrs old, good moral conduct

Who is in-charge in recommending the member of board in case of vacancy?

Commissioner of PRC

What is Rule 11 in R.A 79207

Places and Dates of Examinations

What is the minimum size of stainless steel grounding rod as specified by PEC?

16 mm

A GFCI should be installed in which location?

bathroom

What is the reason the code requires each separate phase conductor to be located in the same raceway?

to reduce inductive heat

Which of the following insulation color identity the grounded conductor of a branch circuit?

White

PEC part 2, 2020 Edition is the

6th edition

Which of the following is not a Distance relay?

Differential Relay

As per OSHS what is the rule number for health and safety committee?

1040

What is the Law for renewable energy is

R.A 9513

In R.A. 11361, the Prevention and Removal of Power Line Obstruction on Private Propert what section

Sec 8

Tall growing plants refers to plants, vines and other plant species, which grow or have the potential to grow more than __________ in height from the ground

3 meter

The overall energy program formulated and updated yearly by the DOE and submitted congress pursuant to R.A. 7638 is known as PEP which means

Philippine Enegry Plan

A 150 candela lamp at a distance of 12.37 m gives a sufficient illumination on a certain wort plain. How far a 250 candela tamp be placed to have the same illumination?

15.97 m

Current in an electrical circuit will take to return to the source

only the path of least resistance

Which of the following bus has a function of directing memory and I/O devices transfer?

Address

Which of the following is the busiest bus and the one that carries that actual data?

Data bus

The MATLAB command will correctly define x, y, and z as symbols?

syms x y z

The MATLAB command use for clear window

clc

MATLAB command for getting the roots of 3x^2-4x+7=0

Roots

Which of the following user-defined header file used in C++?

Dy default, all the files in C are opened in

Text

The LCD display of a portable computer is powered by

low voltage DC

is an act of sending e-mail or emating wett pages that are designed to collect an individual's online bank credit card or other login information

Phishing

Device that transmits two or more signals at the same time

A. Multiplexer

Which of the following does NOT contribute noise to a communication system?

None of the above

What defines information system?

Composed of people and computers that processes or interprets information

Divide (15) base 16 by (011) base 2 Express the answer in base 10

In MS Excel, in cell A2 the input value is equal to 2. at cell B2. the input formula was A2 4/SAS2 The formula at cell B2 is copied to C2 and D2 Where $ means absolute cell reference. What is the output in cell D2?

What is the value of "A" after this program segment is performed? A = 0 DO 771 = 1.4 77 A=A+1

What refers to the negotiable claim issued by a bank in lieu of a term deposit

Certificate of Deposit

In financial accounting another term for Acid Test Ratio is

Quick ratio

100

It is a financial action that does not promise safety of the initial investment along with the return on the principal sum

speculative capital

DC CIRCUITS POWERLINE

DC CIRCUITS POWERLINE

75問 • 2年前

premopremo remo · 100問 · 2年前

AC CIRCUIT POWERLINE

AC CIRCUIT POWERLINE

100問 • 2年前

premopremo remo · 80問 · 2年前

DC CIRCUIT SUPPLEMENTARY PROBLEMS

DC CIRCUIT SUPPLEMENTARY PROBLEMS

80問 • 2年前

premopremo remo · 88問 · 2年前

AC CIRCUIT PASS REVIEWER

AC CIRCUIT PASS REVIEWER

88問 • 2年前

premopremo remo · 50問 · 2年前

AC CIRCUIT PART 8 PINOYBIX

AC CIRCUIT PART 8 PINOYBIX

50問 • 2年前

premopremo remo · 20問 · 2年前

AC CIRCUIT PART 1 PINOYBIX

AC CIRCUIT PART 1 PINOYBIX

20問 • 2年前

premopremo remo · 80問 · 2年前

DC MACHINES POWERLINE REVIEWER

DC MACHINES POWERLINE REVIEWER

80問 • 2年前

premopremo remo · 64問 · 2年前

AC MACHINES (ALTERNATOR) POWERLINE REVIEWER

AC MACHINES (ALTERNATOR) POWERLINE REVIEWER

64問 • 2年前

premopremo remo · 63問 · 2年前

POLYPHASE POWERLINE REVIEWER

POLYPHASE POWERLINE REVIEWER

63問 • 2年前

premopremo remo · 59問 · 2年前

AC CIRCUIT POWERLINE SUPPLY

AC CIRCUIT POWERLINE SUPPLY

59問 • 2年前

premopremo remo · 54問 · 2年前

AC MACHINES (TRANSFORMER)

AC MACHINES (TRANSFORMER)

54問 • 2年前

premopremo remo · 32問 · 2年前

CIRCUIT TRANSIENT POWERLINE

CIRCUIT TRANSIENT POWERLINE

32問 • 2年前

premopremo remo · 92問 · 2年前

POWERSYSTEM POWERLINE

POWERSYSTEM POWERLINE

92問 • 2年前

premopremo remo · 61問 · 2年前

POWERLINE REVIEWER POWERPLANT

POWERLINE REVIEWER POWERPLANT

61問 • 2年前

premopremo remo · 45問 · 2年前

AC MOTORS SUPPLEMENTARY

AC MOTORS SUPPLEMENTARY

45問 • 2年前

premopremo remo · 40問 · 2年前

POWERSYSTEM SUPPLYMENTARY

POWERSYSTEM SUPPLYMENTARY

40問 • 2年前

premopremo remo · 42問 · 2年前

ALGEBRA

ALGEBRA

42問 • 2年前

premopremo remo · 33問 · 2年前

ANALYTIC GEOMETRY

ANALYTIC GEOMETRY

33問 • 2年前

premopremo remo · 23問 · 2年前

TRIGONOMETRY

TRIGONOMETRY

23問 • 2年前

premopremo remo · 28問 · 1年前

HYDRAULICS/

HYDRAULICS/

28問 • 1年前

premopremo remo · 7問 · 1年前

STRENGTH OF MATERIALS

STRENGTH OF MATERIALS

7問 • 1年前

premopremo remo · 46問 · 1年前

ENGINEERING MECHANICS

ENGINEERING MECHANICS

46問 • 1年前

premopremo remo · 25問 · 1年前

AC MACHINES (MOTOR)

AC MACHINES (MOTOR)

25問 • 1年前

premopremo remo · 47問 · 1年前

ENGINEERING ECONOMY

ENGINEERING ECONOMY

47問 • 1年前

premopremo remo · 50問 · 1年前

THERMODYNAMICS

THERMODYNAMICS

50問 • 1年前

premopremo remo · 59問 · 1年前

APPLIED PHYSICS AND ELECTROMAGNETICS

APPLIED PHYSICS AND ELECTROMAGNETICS

59問 • 1年前

premopremo remo · 47問 · 1年前

GENERAL CHEMISTRY AND MATERIAL SCIENCE

GENERAL CHEMISTRY AND MATERIAL SCIENCE

47問 • 1年前

premopremo remo · 62問 · 1年前

PEC 2017

PEC 2017

62問 • 1年前

premopremo remo · 69問 · 1年前

ESAS 2 EVAL

ESAS 2 EVAL

69問 • 1年前

premopremo remo · 55問 · 1年前

ESAS 3 EVAL

ESAS 3 EVAL

55問 • 1年前

premopremo remo · 25問 · 1年前

ESAS 1 EVAL

ESAS 1 EVAL

25問 • 1年前

premopremo remo · 93問 · 1年前

EE1 CIRCUITS

EE1 CIRCUITS

93問 • 1年前

premopremo remo · 93問 · 1年前

EE 2 MACHINES EVAL

EE 2 MACHINES EVAL

93問 • 1年前

premopremo remo · 93問 · 1年前

PASS BOARD EXAM

PASS BOARD EXAM

93問 • 1年前

premopremo remo · 98問 · 1年前

MATH PRE BOARD POWERLINE

MATH PRE BOARD POWERLINE

98問 • 1年前

premopremo remo · 3回閲覧 · 100問 · 1年前

EE POWERLINE PREBOARD

EE POWERLINE PREBOARD

3回閲覧 • 100問 • 1年前

ESAS OBJECTIBE TYPES

ESAS OBJECTIBE TYPES

EE MODULE 1

EE MODULE 1

premopremo remo · 74問 · 1年前

EE MODULE 2.2

EE MODULE 2.2

74問 • 1年前

MATH MODULE 2

MATH MODULE 2

MATH MODULE 2 101

MATH MODULE 2 101

premopremo remo · 54問 · 1年前

MATH MODULE 2 102

MATH MODULE 2 102

54問 • 1年前

ESAS MODULE 1

ESAS MODULE 1

ESAS MODULE 4

ESAS MODULE 4

ESAS MODULE 4.2

ESAS MODULE 4.2

premopremo remo · 15問 · 1年前

ESAS MODULE 4.3

ESAS MODULE 4.3

15問 • 1年前

EE MODULE 3

EE MODULE 3

EE MODULE 2

EE MODULE 2

premopremo remo · 99問 · 1年前

EE REFRESHER 4

EE REFRESHER 4

99問 • 1年前

premopremo remo · 98問 · 1年前

MATH REFRESHER 4

MATH REFRESHER 4

98問 • 1年前

ESAS REFRESHER 4

ESAS REFRESHER 4

premopremo remo · 99問 · 1年前

ESAS REFRESHER 3

ESAS REFRESHER 3

99問 • 1年前

MATH FLASHING

MATH FLASHING

premopremo remo · 39問 · 1年前

MATH FLASHING 1.2

MATH FLASHING 1.2

39問 • 1年前

premopremo remo · 32問 · 1年前

MATH MULTIVECTOR

MATH MULTIVECTOR

32問 • 1年前