暗記メーカー
ログイン
ESAS POWERLINE PREBOARD
  • premopremo remo

  • 問題数 100 • 3/10/2024

    記憶度

    完璧

    15

    覚えた

    35

    うろ覚え

    0

    苦手

    0

    未解答

    0

    アカウント登録して、解答結果を保存しよう

    問題一覧

  • 1

    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

  • 2

    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

  • 3

    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

  • 4

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

    1010 kPa

  • 5

    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

  • 6

    What is the empirical formula for nitric acid?

    HNO3

  • 7

    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

  • 8

    Which is NOT a requirement for PRBEE?

    At least 40 yrs old, good moral conduct

  • 9

    Use of copper in steel alloying

    Increase atmospheric corrosion resistance

  • 10

    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

  • 11

    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

  • 12

    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

  • 13

    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

  • 14

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

    syms x y z

  • 15

    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

  • 16

    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

  • 17

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

    45%

  • 18

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

    1040

  • 19

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

    speculative capital

  • 20

    The standard atmospheric pressure is _____ kPa

    101

  • 21

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

    Polyamide

  • 22

    Which of the following is not true about ideal gases?

    They do not apply pressure

  • 23

    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

  • 24

    A hygrometer is an instrument to measure

    relatice humidity

  • 25

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

    Cations

  • 26

    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

  • 27

    Which of the following are NOT units of pressure?

    kg/m^2

  • 28

    . 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

  • 29

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

    White

  • 30

    Device that transmits two or more signals at the same time

    A. Multiplexer

  • 31

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

    +2

  • 32

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

    Triple

  • 33

    The LCD display of a portable computer is powered by

    low voltage DC

  • 34

    How does an adiabatic process compare to an isentropic process

    both: heat transfer = 0; isentropic: reversible

  • 35

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

    2

  • 36

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

    10

  • 37

    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

  • 38

    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?

    16

  • 39

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

    Roots

  • 40

    What cycle is use for cooling system for aircraft?

    Bell coleman

  • 41

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

    Metallurgy

  • 42

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

    h

  • 43

    Poisson's ratio is the ratio of the

    Unit lateral deformation to the unit longitudinal deformation

  • 44

    What is the Law for renewable energy is

    R.A 9513

  • 45

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

    unchanged

  • 46

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

    cogeneration

  • 47

    In financial accounting another term for Acid Test Ratio is

    Quick ratio

  • 48

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

    2%

  • 49

    PEC part 2, 2020 Edition is the

    6th edition

  • 50

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

    Commissioner of PRC

  • 51

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

    hydration

  • 52

    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

  • 53

    A GFCI should be installed in which location?

    bathroom

  • 54

    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

  • 55

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

    +5

  • 56

    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

  • 57

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

    A370

  • 58

    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

  • 59

    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

  • 60

    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

  • 61

    Unit of Strain is

    unitless

  • 62

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

    Address

  • 63

    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

  • 64

    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

  • 65

    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

  • 66

    Device used to measure the velocity of a liquid?

    Pitot tube

  • 67

    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

  • 68

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

    Sec 8

  • 69

    What defines information system?

    Composed of people and computers that processes or interprets information

  • 70

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

    None of the above

  • 71

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

    8.16%

  • 72

    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

  • 73

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

    1125 N-m

  • 74

    Unit of Young's Modulus

    Kg/cm^2

  • 75

    What is Rule 11 in R.A 79207

    Places and Dates of Examinations

  • 76

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

    Certificate of Deposit

  • 77

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

    7

  • 78

    .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

  • 79

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

    509.7

  • 80

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

    16 mm

  • 81

    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

  • 82

    What is called weight per unit volume of a substance

    Specific weight

  • 83

    Dy default, all the files in C are opened in

    Text

  • 84

    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

  • 85

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

    57.23%

  • 86

    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

  • 87

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

    decrease

  • 88

    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

  • 89

    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

  • 90

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

    Viscosity

  • 91

    What is the SI unit of luminous intensity

    candela

  • 92

    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

  • 93

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

    All of the above

  • 94

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

    only the path of least resistance

  • 95

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

    to reduce inductive heat

  • 96

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

    Data bus

  • 97

    Future worth is equivalent to

    P(1+i)^n

  • 98

    Which of the following is not a Distance relay?

    Differential Relay

  • 99

    The MATLAB command use for clear window

    clc

  • 100

    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