ACES REVIEW CENTER ELECTRICAL ENGINEERING PRE-BOARD EXAM SEPTEMBER 2002 ESAS 0820 644. 6395 INSTRUCTION: Shade the letter corresponding to the correct anaier on the answer for. No erasures absolutely. 1. A 3cm wavelength radar is located at the origin of x-y coordinate system. & car locatedt x = y = 200m is heading east (x-direction) at a speed of 120kph. What is the Doppler fi the requ radar? a 955.33H2 b. -993.71Hz ¢.-955.33H2 d. 99: Fy 2. AS per Executive Order No, 565-A, of Sept 11,2006, PRC is under whi & Office of the President = b. DOLE ¢. CHED d.NO" 3. A racket ejected 1% of its mass per second with a velocity of 2260m/s as Ihfeaves the launching pad. ‘What is its initial acceleration? a Zimis b. 12.2mis 4. The path of a projectile is & parabola b. ellipse a‘ cifcle>” d. hyperbola 5. Which of the following best describes the di shewss? b. itis the stress at which the: 5 0.2% below the fr i to calculate moments of inertia about parallel displaced axis -axis Of interest contribute most to the moment of inertia ia of a large area is equal to the summation of the inertia of the smaller areas -Phase conductors used in the Philippines. fue, green bred, black, green ¢. red, black, white —¢. black, red, blue 8. In deSqning a cylindrical pressure tank 1 min diameter, a factor of safety of 2.5 is used. The cylinder is ‘made of steel (ayies = 200 MPa), and will contain pressures up to 7 M Pa, Whats the required wall thickness, t based an circumferential stress consideration. a 22mm b. 44 mm ¢. 88mm 120mm 9. Find the force exerted by water with density p of height h in the wertical face of a dam of width w. & pgwh b. pewh"2 . pwh'2 4.86 pgwh"210. In a spreadsheet, the number in ceil A2 is set to 2. Then cell B2 is set to A2*4/SA $2, where $ indicates the absolute cell address. The eae is copied nko cea Cand Da iene shown in cell D2 is, a2 11. A system that is completely impervious to its surrounding or neither mass nor energy cross its boundaries. a closed system —bexclusive system c. special system isolated system 12, As of OSHS standard color of signs, what clo sued for markers to designate radiation harard? b. ydlow c.green yellow in combination with purple 13. A system in which there is no exchange of matter with the surrounding or mass di boundaries. open system ——_b equilibrium system c. closed system thermal 14. A thin homogeneous metallic plate containing a hole is heated sufficient! ‘coefficient of surface expansion is linear, the area of the hole will & increase at the same rate as the area of the metal increases. b. decrease at the same rate as the area of the metal increases; . stay the same d. increase at twice rate the area of the metal increases. 15. When was RA 7920 was approved? & Feb. 24,1995 b. Feb. 25,1995 hfe 25,1994 the loading dack is being cansidered years is $8000, The company’s rate of per yaar is most nearly SL Oa S563 ee eam, having no external Ind, is always d. circular. 16.4 company must relocate ane ofits factoriesin for purchase. The original cost is $20,000 and t return on maney invested is 10%. The capil 8 S4B10/yr b, $4950Ky¢ 17. The shape of the bending mor 3 linear b. 18, Find the product of (F 1 a 19802 18. Which of het el in increments of 2? 2DO5 UNL? ¢.DO5J=11L2 6,DO5) =1112 [2m high has 20cm diameter at the bottom and 10cm diameter an top. Find the 20. A wooden tani i horizontal force appli€d on top at failure if the breaking stress is 35M N/m“2. ag b, 3.39KN ¢.9.3IKN 4, 1.93kN a Lea alsocalled uick ratio b. current ratio ¢. incame ratio 4, profitratio 22. At what angle from the horizon must the sun be in order that the sunlight reflected from the surface of calm bady' of water shall be completely polarized? a. 60" b. 30° 053° 4.37" 23, Entropy is the measure of, a intemal energy b. heat capacity —c. randomnessardisorder —_d, changein enthalpy24, How much water overflows when a Pyrex vessel filled to the brim with LL of water at 20°C is heated to Q0°C, the coefficient of volume expansion of Pyrex and water are 9xL0"-6/°C and 2.1x10"-4P°C respectively? a Lalee b, M.lee Mace d. 1.Mec 25, Whats the formula for a straight line depreciation rate? & (100% -% net salvage value) / estimated service life b. % net salvage value / estimated service life +, 100% net salvage value / estimated service life 4. average net salvage value / estimated service life 26. What is in a machine that it is capable of absorbing and organizing new data, | cept, ‘reasoning logically and responding to inquiries? a, Self process intelligence b, artificial intelligence ¢. man-free intelligence d. all of the choices 27. Itrefers to the case hardening process by which the carbon content of increased? & carburizing b. annealing ¢. normalizing 28, Which of the following is the basis for Bernoulli's law for flu the principle of conservation of energy —b, the prifciple ¢. the continuity equation d. Fotixier*s law 29, Thermodynamics focus its study on which of the'toll ay & potential b. internal Jc kinetic 3 d, solar 230. Which isnot covered by thermodynas \ <> be ‘@. transformation of energy diesen e ay os <. utilization of energy 31, Poisson's ratio is the rats 32. When yst air to clean electrical equipment the air pressure should nat exceed 50 psi. The re. insulating tape b. may blow dust to surrounding equipment fe personal hazard to the user d, may rupture the air hose 33. As the simplex algorithm progresses from ane solution to the next in linear programming maximization problem? what will happen to the value of the objective function? a it will increase and then decrease b. it will decrease and then increase c. it will increase ar stay the same d. it will decrease or stay the same 34. As per OSHS what is the rule number for health and safety committee. a 100 b. 1080 ¢. 1000 6, 106035. In every work place with less than 100 workers, shall have a___ for health and safety committee. a. full time registered nurse b, part time registered nurse c. full time certified first aider d, part time certified first aider 36.4 work place with less than 100 workers is under what type and camposition of Health and Safety a type A b. type B «type d. type D 37. tis an internet scam done by cyber-criminals where the user is convinced mn information like passward and username on fake pages a phishing attack —_b, DoS attack c.websiteattack —d, MiTM attack 38, Whats the intensity of sound in W/m”? that wil comme boner ear, the threshold ald ba do. 39. Which of the following is NOT an cxtsive propery of see a Length b. Volume: 40. Which of the following is a solid state drive, a. flash drive b, floppy disk ©. tope drive ical disk 41. What type of fire is caused by woad, paper, fabric, plastielnd a Class Lor A b, Class 2 or B © Clas 307 C ws dor 42, What is an annuity? @. the future worth of a present amount, bb, an annual repayment of a [oan . aseries of uniform aenounts over 4. alump sum at the end of ay b, a 913 d. 7638 10 a3 valent uniform annual cash flows wivalent uniform annual cash flows: 46.T! +638 of transferring files from 3 computer on the internet to your computer is called downloading ——_b, uploading ¢. browsing d. scanning 47. Which of the following elements and compounds is unstable in its pure form? a. sodium, Na b. helium, He c. carbon dioxide, COz d. hydrochloric acid, HCI 48. What is work in process classified as? a asset c expenses d. revenue49. [tis also knows as cooperative processing that involve using two or morenetworked computers to perform an application task, a.clientcomputing b, server computing c. distributed processing client/server computing 50. The differential of the shear equation is which one of the follawing? @ tensile strength of beam b, load on the beam ¢, bending moment of the beam 4, slope of the dastic curve 51. It isthe an informal website publishing on the World Wide Web that consist of discrete, of informal diary style text entries which are displayed in reverse chronological order, sa the post appears first at the top of the web page. @. blogging b, texting . bwitting, d. Instagram 52. What type of steel hardening does not require a quench? a. nitriding b, carburizing ¢. tempering 53. In materials engineering and metallurgy ___ correspands to hard aredhardness —b. sourhardness —_c, black hard ardness 54. Which of the follwing is NOT a requirement for PEE (Professional El adyrsexperience b. Tyrsexperience ¢. BSE 00d citizen of the Philippines 55. $1000 is deposited into 9% account today. At th years, a $4000 purchase will be made. A pproxim purchase? a. $1230 b, $1420 $3000 will be deposited. in 5. left in the account 1 year after the d. $1690 56. Which of the following will occur if a itabsorbs energy. itl 4. it becomes more negative 57. As of OSHS standard color a is under repair or being w a. red recaution to the mowernent af equipment which a Oiaiow d. green s the operation of a computer? 58. Which of the foll does. fi worm d. hacking a. Trojan 59. For aff ity is defined as the constant of propartionality between shear stress and what other variable? ial derivative of velocity b, the time derivative of pressure derivative of density 4, the spatial derivative of density ‘60. Whatis the term for a deadlack situation that eccurs when a program references a different page for almost every instruction and there is not even enough real memary to hold most of the virtual memory? a. paging b. scanning thrashing d. handshaking 61. What network model enables engineer manager to schedule, monitor and control large and complex project by using only one time factor per activity? a. forecasting b. critical path method (CPM ) . simulation 4, program evaluation review technique(PERT)62. A solar cell has a dimension of lem by 2em. Itis directly exposed ta the sun for 2 minutes. How many joules of energy can be produced by the salar cel if the sunlight has a capacity of LOOW im*2? a42 baz 24 424 63. A bicycle tire has a valume of 600 cm?,Itis inflated with CO2 toa pressure of 5.4 atm at 20°C Approximately haw many grams of CO) are contained in the tire? a38g b.48g 60g 4.649 64. How many dynes are therein 1N? a0? b. 106 10% 4. 10°5 65. Suppose you are capable of carrying a weight of 400 M (about 90Ib). What size cul "you carry? The density of gold is 19,300 ka/m*3. a liom b. 13.45cm ©. 16.58.cm 4. 12.83, 66. It is the process of unifying the power of technalagy with entrepreneurial ski a entrepreneurship —b. technapeeneurship.¢. inovations cappbilities. 67. What refers to the activity of incorporating the technical know, coordinate warkforce, materials, equipment and all other resourct a. Engineering management b. Engineer Technical manger , General mi 68.A data lineis as follows: 21.459214.5307421557.82 hich, L omingisoninconeet storage of this data using the following READ statement 8 READ (5,96)A,8,1,,C.K cr 58 FORMAT (2F7.4,212,76.21 3 aA=2a52 bE =145: to cers 69. Which of these expression for a si ae, is occeptable? Assume B.H.IJ.K and L ae greater than zero. , a ALK) “l) od. A(-3) » Ms ne using improvised tools . servicing d, operating without authority 71. When worth calculations to compare two projects, which of the following cauld invalidate I @ Gvaluati er different time period b, mutually exclusive projects « tional cash flows: d. difference in the magnitude of the project mW went is rue fora fluid? cannot sustain a shear force atrest —_b, itcannot sustain a shear force © itisa liquid only d, it can strain 73. Two mutually exclusive projects are being considered. Project A requires an investment af $1,000,000 at year zero. Project A will pay $200,000/yr forever. Project B also requires an investment of $1,000,000 at year zero, However, it pays $1,500,000 the next and nothing after that, The internal rate of return (IRR) on project A is 20%, The IRR for project B is 50%. Which is the better project? The borrowing rate is 5%. a Project, becauseithasa lower IRR b, Project B, because it has a higher IRR ¢. The two projects are equivalent i, Project A, because its net present worth is higher74. Whats the cycle which is composed of two isothermal and two isentropic processes, a Carnot b. Diesel cc Otto d. Brayton 75.4 company purchases $200,000 of equipment in year zero. It decides to use straight line depreciation aver the expected 20 years life of the equipment. The interest rate is 14%, If its overall tax rate is 40%, what is the present worth of the after-tax depreciation recovery? a $23500 b, $24000 «$2650 d. $39700 76. Which of the following best describes the 0.2% offset yield stress? @. it is the stress at which the material plastically strains 0.2% b. itisthe stress at which the material elastically strains 0.2% ¢. itis 0.2% below the fracture point of the material i itis the dastic limit after which a measurable plastic strain has occurred se 77. 4. Buying insurance is a form of a Risk elimination b, Risk reduction —_c. Risk sharing 78. Matesials in this group are compased of one or mare metallic el fon, aluminum, copper, titanium, gold and nickel. What is this group called? a, metals, b, metalloid ©. solids 79. it is.a process with NO heat transfer? a isothermal b, isobaric G Pi ‘80. What is the requirement to be a CPD chairmay a PRC commissioner c, member of academe “A 81. Which of the following describes it |. itis a mathematical concept essional community flow lll. itis aline of constant entropy | and til = d. | and I SoS 82. A force of 200 Ibf acts Je of 28° with respect to horizontal. The block is pushed 2 ft horizontally. The work done by ly a 210) . c. 480) 4, 540) 83. The’ r ‘of liquid water at O°C is raised by 1°C, The number of calories consumed is most nearl| abica b.d.2cal ©. 99¢al 4, 100.cal 84. Api of x dollars is made at the end of each year for 3 yr, at an interest rate of 9% per year com nual y. W hat will the datlar value of the total investment be, most nearly, upon the deposit of the third payment? 30.77% b sLix ©. $2.3« d. $3.3x 85. The volatility of a stock is found to be 1.5 times the stock market average. If the risk premium for buying stocks averages 8.3% and the present treasury bill rate is 7%, what is thr expected return on the stock? a 12.45% b, 15.3% © 188% d. 19.45%86 A student needs PA0O0O0/yr for 4 yr te attend college. Her father invested P50000 in a 7% account for her education when she was bom. If the student withdraws P40000 at the end of her 17, 18°..29", and 20" years, how much money will be left in the account at the end of her 21st year? a. P17000 b, P25000 . P3400 d. Pa4no00 87. The president of a growing engineering firm wishes to give each of 50 employees a holiday bonus, How ‘much is needed to invest monthly for a year at 12% naminal rate compounded monthly, so that each employee will receive a P10000 bonus. a. P39424.40 b. P32712.20 c. P36001.20 4. P30803.20 88. 4 young engineer borrowed 10000 at 12% interest and paid 2000 per annun for the Last does he have to pay atthe end of the fifth year in order to pay aff his loan? a. 6999.39 b, P6292.93 c. P6222.39 d. P6922.9 thie years. folio, there is a 0.5 rhe will receive a total 89. An investment of $350,000 is made to be fallowed by revenue of $200,000. What is most nearly the annual rate of return on investment for this project? alse b. 3% 42% 90. An investor is considering a stock portfolio that cost $55, If he i probability that he will receive a total revenue of $20. If that event revenue of $100. W hat will be the investor's expected profit if he: ass b, S15 ©, $55 91. A Camot engine operates between 444K and 555K i iency? a 20% b. 30% d, 50% 92. Gasis enclosed in a cylinder with a wel ie indary. The gas is heated and expands: from a volume of 0.04 m* to 0,10 m* ata ‘of 200 kPa. Calculate the work done by the system. ay nl 8.0K) b.10 c vo dak 93. A ball was dropped from ah ve ree heightis made 4 times he, the velocity of the ball as it hits the floar wil ay an ade 2 Gun dtv0 94. A 40kg boy walksOrha 60kg on water normal ta the shore with a speed of 1.Sm/s towards the shore. What wi ofthelag with respect to the shore? aims Oa ©. 1.5mys d. 45s 95. ees ‘of a human body is SBOkg/cu.m. What percent of the human body will float in fresh water? b2 298 4. 10 96. A stflid steel ball has a weight of $0,000 dynes in air, 42,000 dynes in water and 36,000 dynes in an unknow | id. W hat is the specific gravity of the unknown liquid? aLls b, 1.50 e175 4, 2.00 97. What is the most nearly the effective annual interest rate on a loan if the nominal interest rate is 12% lyr compounded quarterly? a 11.8% b, 12% 123% 4, 12.6% 38. |F ABC base 16 is added to 123 base 8, what is the sum expressed in base 8. a sa71 b.Sla7 ©1057 4 Sa1798. A circular window with a radius of 0.25 m has its center 3m below the water's surface. The window is vertical. W hat is most nearly the farce acting on the window? a 29KN b.5.8kN 18 KN d.29KN 100. J ames is downloading an 800 kB file from the internet using his 28.8k modem. How long will it take him to finish downloading? a. 0.46 min b.3.7 min ©. 3.8 min 4.4.1 min