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Republic of the Philippines PROFESSIONAL REGULATION COMMISSION Manila**BOARD OF ELECTRICAL ENGINEERS REGISTERED ELECTRICAL ENGINEERING Licensure Examination Set A**ENGINEERING SCIENCES AND ALLIED SUBJECTSMarch 18, 2020 Wednesday 2pm - 6pmPREBOARD EXAM 11 – ESAS 4INSTRUCTION: Select the correct answe...

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Republic of the Philippines PROFESSIONAL REGULATION COMMISSION Manila BOARD OF ELECTRICAL ENGINEERS REGISTERED ELECTRICAL ENGINEERING Licensure Examination -------------------------------------------------------------------------Set A

ENGINEERING SCIENCES AND ALLIED SUBJECTS March 18, 2020 Wednesday

2pm - 6pm

PREBOARD EXAM 11 – ESAS 4 INSTRUCTION: Select the correct answer for each of the following questions. Mark only one answer for each item by shading the box corresponding to the letter of your choice on the answer sheet provided. STRICTLY NO ERASURES ALLOWED. Use pencil No. 2 only. 1. In throttling process A. There is no work done B. There is no heat transfer

C. There is no change in enthalpy D. All of these

2. The rent of an apartment is originally P 3,000.00 if the land lady implements a P 50.00 increase per month. What is the average per-year inflation during the 5 years of increase. A. 14.87 percent C. 14.29 percent B. 20.00 percent D. 11.11 percent 3. Which of the following is NOT acceptable as a FORTRAN statement? A. A = B B. A = B+C C. AB=C*D D. A*B=C*D 4. BIOS stands for (Sept 2014 & April 2016) A. Basic Input Output Society C. Basic Input Output System B. Base Input Output Society D. Base Input Output System 5. Most common pressure measuring device use today (Sept 2014) A. Manometer C. Bourdon tube gauge B. Kelvin gauge D. Barometer 6. A. B. C. D.

Codes are always Eight bits per character Either seven or eight bits per character Agreed upon in advance between sender receiver The same in all modern computers

7. Which of the following phases of steel has a face-centered cubic structure? A. pearlite B. ferrite C. austenite D. cementite 8. APRIL 2018. What is the chemical formula of Sodium Chloride? A. Na2Cl B. NaCl C. NaCl2 D. Na2Cl2 9. A car moving at 30 m/s slows uniformly to speed 10 m/s in 5 seconds.

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A. 10 m

B. 15 m

C. 30 m

D. 20 m

10. A solid cube of aluminum is 2.00 cm on each edge. The density of aluminum is 2700 kg/m³. Find the mass of the cube? A. 32.4 g B. 34.2 g C. 21.6 g D. 26.1 g 11. The number 17 base 8 is equivalent to binary. A. 1110 B. 111 C. 1111

D. 10000

12. The amount of electricity a battery can produce is controlled by the __________. A. Thickness of the plate C. Strength of the acid B. Plate surface area D. Discharge load 13. A system or circuit conductor that is intentionally grounded. A. Grounding conductor C. Grounding electrode conductor B. Grounded Conductor D. Grounding equipment 14. The iron that has been cooled quickly from molten state is known as A. White cast iron C. Pink cast iron B. Blue cast iron D. Brown cast iron 15. Find the horsepower rating of a motor of an elevator that can carry a total of 100 kg in 30 feet within 10 seconds. A. 1.4 HP B. 1.2 HP C. 1.6 HP D. 1.8 HP 16. Under what condition is mass conserved in a fluid flow. (REE-Sept 2018) A. The fluid is baratropic C. The flow is adiabatic B. The flow is isentropic D. It is always conserved 17. When the pressure is measure with respect to the true zero pressure reference, it is called: A. vacuum pressure C. gage pressure B. absolute pressure D. atmospheric pressure 18. What is the temperature in deg C of 2 liters of water at 30 deg C after 500 calories of heat have been added? A. 30.25 B. 35.70 C. 38 D. 39.75 19. Mandarin Bank advertises 9.5% account that yields 9.84% annually. Find how often interest is compounded. (Sept 2014) A. Monthly B. Bimonthly C. Quarterly D. Annually 20. What is the empirical formula for C2H6? A. C3H2 B. C2H C. CH3

D. CH2

21. Where receptacles are connected to a 20-A branch circuit, what should be the maximum allowable rating of a cord-and-plug connected load? A. 20 A B. 25 A C. 16 A D. 24 A 22. Which of the following is the strongest type of bonds? A. covalent B. metallic C. ionic D. van der waals

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23. A Carnot refrigerator requires 10kW to remove 20 kJ/s from a 20 degC reservoir. What is Th? A. 440K B. 400K C. 360K D. 340K 24. Property of a fluid by which its own molecules are attracted is called A. Adhesion B. Cohesion C. Viscosity D. Compressibility 25. A couple produces A. translatory motion B. rotational motion

C. combined translatory and rotational motion D. none of these

26. At an annual rate of return of 8 percent, what is the future worth of $100 at the end of four years? A. $130 B. $132 C. $135 D. $136 27. What is CD ROM? (April 2016) A. Compact Disk Read Only Memory B. Compatible Disk Read Only Memory

C. Compact Data Read Only Memoery D. Compatible Data Read Only Memoery

28. The ratio of lateral strain to the linear strains is A. Poisson's ratio C. modulus of rigidity B. modulus of elasticity D. bulk modulus 29. 1 kWHR is how many kilojoules? A. 360 B. 3600

C. 1000

D. 100

30. Varignon's Theorem is used to determine the __________. A. mass moment of inertia C. location of centroid B. moment of inertia D. moment of area 31. An audio frequency is said to be within: A. 400 Hz to 40,000 Hz C. 20 Hz to 20,000 Hz B. none of the other choices D. 100 Hz to 100,000 Hz 32. A bar of uniform cross section is subject to uniaxial tension and develops a strain in the direction of the force 1/800. Calculate the change of volume per unit volume. Assume mu = 1/3. A. 1/2400(inc) C. 1/2400 (dec) B. 1/1200(inc) D. 1/1200(dec) 33. Given a spring with a spring constant of 60 N/m. What is the work done in compressing by 4.2 cm? A. 0.02 J B. 0.06 J C. 0.03 J D. 0.05 J 34. A tank contains oil (SG = 0.80), gasoline (SG = 0.9) and seawater (SG = 1.03), if the depths of the liquids are 0.5 m, 0.8 m and 1 m of oil, gasoline and seawater respectively. Find the pressure at a depth of 1.8 m. A. 10.104 kPa B. 21.092 kPa C. 24.089 kPa D. 16.567 kPa 35. The hexadecimal number B6C7 is equal to the decimal number: A. 46791 B. 49671 C. 49761 D. 47691

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36. The Hooke's law hold good within A. yield point B. elastic limit Euler's limit

C. plastic limit

37. APRIL 2018. What is the equivalent of 1 kilobyte A. 1024 bytes B. 1000 bytes C. 10,000 bytes bytes

D.

D. 200

38. A 3500 kg car accelerates from rest. The constant forward tractive force of the car is 1000 N and the constant drag force is 150 N. What distance will the car travel in 3 seconds? A. 1.1 m B. 0.19 m C. 1.3 m D. 15 m 39. Which of the following describes shear stress in Newtonian fluid? A. It is nonexistent B. It is proportional to the absolute viscosity. C. It is proportional to the velocity gradient at a point of interest. D. both A and B 40. Which of the following expression is incorrect?(REE-Sept 2018) A. The future worth of a present amount, (F/P, I,n) = 1(P/F,i,n) B. The future worth of an annuity, (F/A,i,n) = 1/(A/F,i,n) C. The present worth of an annuity, (F/A,I,n)=1/(A/P,i,n) D. (A/F,i,n) – 1 = (A/P,i,n) 41. Engr. Trinidad loans from a loan firm an amount of P 100,000 with a rate of simple interest of 20% but the interest was deducted from the loan at the time the money was borrowed. If at the end of one year, she has to pay the full amount of P 100,000, what is the actual rate of interest? A. 24.7% B. 23.5% C. 25.0% D. 25.8% 42. A company deposits $1000 every year for ten years in a bank. The company makes no deposits during the subsequent five years. If the bank pays 8% interest, the amount in the account at the end of 15 years is nearest to A. $10,800 B. $15,000 C. $16,200 D. $21,200 43. Which among the following interests is the smallest? A. 11.70% compounded monthly B. 11.81% compounded quarterly C. 11.64% compounded continuously D. 11.99% compounded biannually 44. Three force 20N, 30 N and 40N are in equilibrium. Find the angle between the 30N and 40 N. A. 25.97deg B. 28.96 deg C. 30 deg 15 min 25 sec 40 deg

D.

45. A machine has an initial cost of P50,000.00 and a salvage value of P10,000.00 after 10 years. What is the book value after 5 years using straight line depreciation? A. P35,000.00 B. P25,000.00 C. P15,000.00 D. P30,000.00 46. A circle has a diameter of 20 cm. Determine the moment of inertia of the circular area relative to the axis perpendicular to the area through

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the center of the circle. A. 17,279 B. 14,280

C. 19,007

D. 15,708

47. The purpose of a preamble in an Ethernet is A. Clock synchronization C. Collision avoidance B. Error checking D. Broadcast 48. Adiabatic process is? A. no heat transfer B. reversible

C. irreversible D. constant pressure

49. In the computation of the size of building wire, the PEC requires that at least a certain percent increase must be added. What percent is this? A. 50 percent B. 20 percent C. 15 percent D. 25 percent 50. If you borrow money from your friend with simple interest of 12 percent, find the present worth of P20,000, which is due at the end of nine months. A. P18,992.08 B. P18,782.18 C. P18,348.62 D. P18,120.45 51. An open system first law should be utilized for all the following except: A. nozzle B. a turbine C. a piston-cylinder device with no inlet/exhaust valves D. a compressor 52. A heat pump delivers 20000 kJ/hr of heat with a 1.39 kW input. Calculate the COP. A. 3 B. 4 C. 5 D. 2 53. __________ is any building, room or separate place which houses or encloses electric supply equipment connected to transmission or distribution lines over Section 2(e), Article I of R. A. 7920. A. substation C. power plant B. power house D. electrical room 54. Which is NOT an extensive property of thermodynamics? (REE-Sept 2018) A. Density B. Mass C. Volume D. Energy 55. What is the ratio of stress to strain below the proportional limit? A. modulus of rigidity C. Young's modulus B. Hooke's constant D. Poisson ratio 56. What is the chemical formula for Ammonia? A. NH3 B. NH4 C. N3H2

D. N2H3

57. The Moody diagram is used in fluid mechanics to obtain: A. drag coefficient C. pressure coefficient B. Stroudal number D. friction factor 58. A baseball is thrown in a horizontal plane following a parabolic path with an initial velocity of 100m/s at an angle of 30 deg above horizontal.

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