Manila - Fb 12 - Geas

Excel Review Center FB 12 - GEAS

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TIME ELEMENT: 4 HOURS

1. Which of the following standard units is

defined in terms of an object as opposed to an event?

A. Kilogram *

B. Meter C. Second D. All of the above

2. Two forces of 10 N each act on an

object. The angle between the forces is

120. The magnitude of their resultant is A. 10 N *

B. 14 N

C. 17 N

D. 20 N

3. A pencil 10 cm long is placed 100 cm in

front of a mirror of focal length + 50 cm. The image is A. 3 cm long and erect

B. 10 cm long and erect

C. 3 cm long and inverted

D. 10 cm long and inverted *

4. In the matrix management organization,

which of the following is true? A. The functional manager is

responsible for employee skills

improvement. *

B. The project manager is responsible

for employee skills improvement.

C. The project manager is responsible

for the employee’s annual

appraisal.

D. The employee is responsible for his

or her own skills improvement.

5. Carbon dioxide is composed of what

percentage of dry air of atmosphere by volume? A. 0.03 % *

B. 0.13 %

C. 0.01 %

D. 0.09 %

6. A particle moving with respect to an

observer has a mass ______ that of an identical object at rest with respect to the observer.

A. greater than *

B. much lesser than C. the same as D. slightly lesser than

7. A 200-g ball moving at 5.0 m/s strikes a

wall perpendicularly and rebound elastically at the same speed. The impulse given to the wall is A. 1 N

.s

B. 2 N.s *

C. 2.5 N.s

D. 10 N.s

8. How many MeV are there in 3 amu?

A. 2478 MeV

B. 2590 MeV C. 2653 MeV D. 2793 MeV *

9. Which of the following ratios is correct in

providing a physical meaning for the Reynolds number, Re?

A. Re = buoyant force / inertial force B. Re = viscous force / inertial force C. Re = drag force / viscous force

D. Re = inertial force / viscous force * 10. Conversion factors make use of

A. A relationship between two units or

quantities in fractional form * B. The fact that units are always

written as whole numbers C. Numbers which cannot be divided

into smaller units D. A direct connection between weight

and volume 11. A toboggan reaches the foot of a hill at a

speed of 4.0 m/s and coasts on level snow for 15 m before coming to a stop. The coefficient of kinetic friction is

A. 0.004

B. 0.05 *

C. 0.16

D. 0.27

12. A 1.0-lb slug mass has a kinetic energy

of 1.0 ft. lb when its speed is A. 0.25 ft/s

B. 1.0 ft/s

C. 1.4 ft/s *

D. 8.0 ft/s

13. What is the formula for a straight-line

depreciation rate?

A. (100% - % net salvage

value)/estimated service life * B. % net salvage value/estimated

service life C. Average net salvage

value/estimated service life D. Average gross salvage

value/estimated service life 14. It is often desired to know the number of

atoms, n, in a crystal structure that posseses more than a specified amount of energy, E. Which of the following equations gives n, given that N is the total number of atoms present, M is a constant, k is the Boltzmann constant, and T is the temperature of the specimen?

A. n = (M/N)e^(-kE/T) B. n = (EM/N)e^-kT C. n = MNe^(-E/kT) * D. n = MNe^(-kT/E)

15. A solid circular disk weighing 32.2 lb

and having a diameter of 3 ft is suspended at its midpoint horizontally from the end of a vertical steel wire 3 ft

long and 1/8 inch in diameter. The shear modulus of elasticity for the wire is G = 12 x 106 lb per sq. in. Determine the period of torsional vibration. A. 7.45 s B. 8.17 s * C. 9.32 s D. 9.85 s

16. A ball is thrown at a 40 angle below the horizontal at 8.0 m/s. After 0.40 s the horizontal component of its velocity will be A. 5.1 m/s

B. 6.1 m/s *

C. 6.7 m/s

D. 10.4 m/s

17. A lens placed 9.00 cm from a postage

stamp produces a virtual image of it 3.00 cm from the lens. The lens has a focal length of A. – 2.25 cm

B. + 2.25 cm

C. – 4.50 cm *

D. + 4.50 cm

18. Which of the following statements is

false?

A. For a diatomic molecule, the bond

dissociation energy is the change in the enthalpy of the reaction when the diatomic molecule is separated into atoms.

B. The average bond energy is the approximate energy required to break a bond in any compound in which it occurs.

C. The energy released when a

gaseous molecule is formed from its gaseous atom can be estimated using average bond energies.

D. Change in H is negative when energy is absorbed in the formation of a compound from its elements. *

19. A ball dropped from a height of 3.0 m

bounces up to a height of 1.0 m. The

coefficient of restitution is A. 0.33

B. 0.58 *

C. 1.7

D. 3.0

20. The program evaluation and review

technique (PERT) method of scheduling

differs from the critical path method (CPM) because the PERT method:

A. Uses weighted averages of activity

durations to calculate project

duration. *

B. Uses ‘‘dummy’’ activities to

represent logic ties.

C. Uses ‘‘free float’’ instead of ‘‘total

float’’ in the schedule calculations.

D. Uses bar charts instead of logic

diagrams to portray the schedule.

21. A road slopes upward so that it climbs

1.0 m for each 12 m of distance along the road. A car whose weight is 10 k N moves up the road at a constant speed of 24 m/s. The minimum power the car’s engine develops is A. 1.7 k W

B. 2.0 k W

C. 20 k W *

D. 0.24 MW



22. The Economic Order Quantity (EOQ) is

defined as the order quantity which minimizes the inventory cost per unit time. Which of the following is not an assumption of the basic EOQ model with no shortages?

A. The demand rate is uniform and constant.

B. There is a positive cost on each unit inventoried.

C. The entire reorder quantity is delivered instantaneously.

D. There is an upper bound on the quantity ordered. *

23. Which of the following radioactive

substances have small masses? A. Beta rays * B. Alpha rays C. Gamma rays D. Y-rays

24. The 2.0-kg head of an ax is moving at

60 m/s when it strikes a log. If the blade of the ax penetrates 20 mm into the log, the average force it exerts is A. 3 k N

B. 90 k N

C. 72 k N

D. 180 k N *

25. As the volume of the cube becomes larger and larger, the surface area-to-volume ratio A. increases B. decreases * C. remains the same D. sometimes increases and

sometimes decreases

26. Which cast iron is easy to machine and have good wear resistance?

A. Gray cast iron * B. Malleable cast iron C. Ductile cast iron D. White cast iron

27. What is the molarity of ethanol in 90-proof whiskey? Density of alcohol = 0.8 g/ml. (MW ethanol = 46 g/mole)

A. 5.34 M B. 6.68 M C. 7.83 M * D. 8.24 M

28. What is next to the fundamental state in

the electron orbital angular momentum?

A. S state B. G state * C. P state D. D state

29. What is the crystal structure at room

temperature of gamma iron? A. FCC * B. BCC C. HCP D. Either FCC or HCP depending on

the temperature

30. An 800-kg car moving at 80 km/h

overtakes a 1200-kg car moving at 40 km/h in the same direction. If the two cars stick together, the wreckage has an initial speed of A. 8 km/h

B. 40 km/h

C. 56 km/h *

D. 60 km/h

31. Oxides, carbides, nitrides and glasses

are all _____.

A. rubber B. polymers

C. ceramics * D. all choices are correct

32. A 200-kg satellite circles the earth in an orbit 7.0 X 10⁶ m in radius. At this altitude g =8.2m/s². The speed of the satellite is A. 38 m/s

B. 0.85 km/s

C. 7.6 km/s *

D. 7.9 km/s

33. What is the energy associated with a

photon of wavelength lambda? A. h/lambda B. ch(lambda) C. h(lambda) * D. hc/lambda

34. One mole of O2 has a mass of

A. 32 g * B. 16 g C. 8 g

D. 64 g

35. A motor takes 8.00 s to go from 60 rad/s to 140 rad/s at constant angular acceleration. The total angle through which its shaft turns during this time is A. 320 rad

B. 640rad

C. 800 rad *

D. 1600 rad

36. The principal quantum numbers

(denoted as n) are positive number and range from A. 1 to 7 *

B. 1 to 8

C. 1 to 6

D. 1 to 5

37. A brass rod 5.0 ft long with a square

cross section 0.50 in on a side is used to support a 520-lb load. Its elongation is A. 0.0008 in

B. 0.0048 in

C. 0.0096 in *

D. 0.048 in

38. Which of the following statements

regarding a galvanic cell is FALSE?

A. A negative value of cell voltage means that the reaction in the cell proceeds spontaneously from right

to left.

B. If the standard potential of a cell is

zero, a concentration difference alone is sufficient to generate a voltage.

C. It is possible to have a gas electrode in a galvanic cell.

D. The cell voltage is totally

independent of the number of electrons transferred in a given reaction. *

39. A shearing stress that acts on a body

affects its A. width B. length C. volume D. shape *

40. An astronaut whose total mass is 100 kg

ejects 1.0 g of gas from his propulsion pistol at a speed of 50 m/s. His recoil speed is A. 0.5 mm/s *

B. 5 mm/s

C. 5 cm/s

D. 50 cm/s

41. The specific heat of soil is 0.20 kcal/kg-

degC and the specific heat of water is 1.00 kcal/kg-degC. This means that if 1 kg of soil and 1 kg of water each receive 1 kcal of energy, ideally,

A. the water will be warmer than the

soil by 0.8 deg Celsius B. the soil will be 5 degree Celsius * C. the water will be 5 degree Celsius D. the water will warm by 1 degree

Celsius and the soil will warm by 0.2 degree C

42. Under very slow deformation and at high

temperature, it is possible to have some plastic flow in a crystal at a shear stress lower than the critical shear stress. What is this phenomenon called?

A. Creep * B. Twinning C. Slip D. Bending

43. Calculate the volume of 0.3 N base

necessary to neutralize 3 liters of 0.01 N nitric acid.

A. 0.05 L B. 0.10 L * C. 0.15 L D. 0.20 L

44. Five kg of aluminum (Cv = 0.91 J/gmK)

at 250K are placed in contact with 15

kg of copper (Cv = 0.39 J/gmK). If any transfer of energy is prevented, what will be the final temperature of the metals?

A. 321 K *

B. 334 K C. 341 K D. 358 K

45. Which element is expected to have a “sea” of electrons?

A. Cobalt * B. Chlorine C. Hydrogen D. Oxygen



46. What is the principle behind why a jet

plane flies in air? A. The thrust of the jet compensate for

the force of gravity. * B. The weight of the air whose volume

is equal to the volume of the plane

is more than the weight of the plane.

C. The flow of the air around the wings causes an upward force, which compensate for the force of gravity

D. The gravity does not act on the body moving with high speed.

47. The Bohr model of the atom

A. explained the color lines in the hydrogen spectrum

B. could not explain the line spectrum of atoms larger than hydrogen

C. had some made-up rules without explanations

D. all choices are correct *

48. The elements with atomic number of 2, 8, 18, 36 and 54 are all ______.

A. alkali metals B. halogens C. noble gases * D. transition elements

49. The maximum density of water is at what temperature?

A. 0ºC B. 4ºC * C. 100ºC D. 50ºC

50. Which of the following statements is

true?

A. Increasing the temperature

decreases the activation energy. B. The Arrhenius equation can be

used to determine the activation energy of a reaction. *

C. Activation energy is the difference in energy between the reactants and the products.

D. Molecules can collide in any

orientation, and a reaction occurs if there is enough energy

51. A Carnot refrigerator operates between

two reservoirs. One reservoir is at a higher temperature, Th and the other is at a cooler temperature, Tc. What is the coefficient of performance, COP, of the refrigerator?

A. Th/Tc B. Th – Tc/Th C. Th/Tc – Tc D. Tc/(Th – Tc) *

52. A steel wire has a fundamental

frequency of vibration of 400 Hz. The fundamental frequency of another steel

wire of the same length and under the same tension but whose diameter is twice as great is A. 100 Hz

B. 200 Hz *

C. 400 Hz

D. 800 Hz

53. Which of the following statements about

cold-worked metal is FALSE?

A. Cold-working a metal significantly reduces its ductility.

B. Col-working causes a slight decrease in the density and

electrical conductivity of a metal. C. There is a considerable increase in

the hardness and the strength of a cold-worked metal.

D. Cold work decreases the yield point of the metal. *

54. What is the reason why certain isotopes

have an unstable nucleus? A. Because the number of protons

outweight the number of neutrons. B. Because the number of protons

outweight the number of electrons. C. Because the number of electrons

outweight the number of protons D. Because the number of neutrons

outweight the number of protons. *

55. The Van der Waals forces of attraction

between molecules is weakest in which element?

A. Neon B. Argon C. Helium * D. Xenon

56. For a heat engine operating between two temperatures (T2 > T1), what is the maximum efficiency attainable?

A. 1 – T2/T1 B. 1 – T1/T2 * C. T1/T2 D. T2/T1

57. If 1.0 kg of punch of specific heat

capacity 3.4 k J/kg. C at a temperature

of 5C is poured into a 1.0-kg glass

punch bowl that is at 20C, the final temperature of the punch is

A. 6C

B. 8C *

C. 10

D. 12C

58. Wave nature of matter is not apparent in

our day to day working because the wavelength of matter is

A. directly proportional to energy

B. inversely proportional to energy C. directly proportional to momentum D. inversely proportional to

momentum *

59. Which of the following is FALSE?

A. Ceramics are inorganic,

nonmetallic solids that are processed or used at high

temperature. B. Metals are chemical elements that

form substances that are opaque, lustrous, and good conductors of heat and electricity.

C. Oxides, carbides and nitrides are considered to be within the classes of materials known as glasses. *

D. Polymers are formed by many

atoms with low molecular weight, bonded together by primary valence bonds.

60. The difference between an echo and a

reverberation is

A. an echo is a reflected sound; reverberation is not

B. the time interval between the original sound and the reflected

sound * C. the amplitude of an echo is much

greater D. reverberation comes from

acoustical speakers; echoes comes from cliffs and walls

61. Which combination of elements forms

crystalline solids that will dissolve in water, producing a solution of ions that can conduct an electric current?

A. Metal and metal B. Metal and nonmetal * C. Nonmetal and nonmetal D. All choices are correct

62. Two pieces of wire of the same

materials have their lengths in the ratio of 1:2 and the diameters in the ratio 2:1. If they are stretched by the equal forces, elongation will be in the ratio of

A. 1:2 B. 2:1 C. 1:8 * D. 8:1

63. An object 40 cm from a converging lens

has an image 40 cm away from the lens on the other side. The focal length of the lens is A. 20 cm *

B. 40 cm

C. 60 cm

D. 80 cm

64. When an electron in a hydrogen atom

jumps from an orbit farther from the nucleus to an orbit closer to the nucleus, it

A. emits a single photon with an

energy equal to the energy difference of the two orbits *

B. emits four photons, one for each of the color lines observed in the line spectrum of hydrogen

C. emits a number of photons dependent on the number of orbit levels jumped over

D. none of the choices

65. A magnifying glass is to be used at the fixed object distance of 10.0 mm. If it is to produce an erect image magnified 5.00 times, its focal length should be A. + 2.0 mm

B. + 8.0 mm

C. + 12.5 mm *

D. + 50.0 mm

66. When an ideal gas undergoes an

unrestricted expansion, no cooling occurs because molecules _____.

A. are above the inversion

temperature B. do equal work to lose energy C. do not exert any attractive force on

each other * D. collide without any energy loss



67. Anyone who has whirled a ball on a

sting knows that, if the ball’s speed is less than the critical value, the string goes slack. This critical value is equal to square root of ______.

A. the twice the product of the length

of string and gravitational acceleration

B. the product of the mass, gravitational acceleration and the length of string

C. product of the length of string and gravitational acceleration *

D. Square root of the quantity mass and gravitational acceleration divided by the length of the string.

68. What material is usually used for high

resistance thermocouple? A. Platinum * B. Palladium C. Molybdenum D. Rhodium

69. A football player kicked a football,

football does not behave as a wave because the de Broglie wavelength corresponding to football is

A. infinite B. much greater than the dimensions

of the field but not infinite C. of the same order as the

dimensions of the field D. much less than the dimensions of

the fields *

70. According to the activity series for metals, adding metallic iron to a solution of aluminum chloride should result to

A. a solution of iron chloride and metallic aluminum

B. a mixed solution of iron and aluminum chloride

C. the formation of iron hydroxide with hydrogen given off

D. no metal replacement reaction *

71. A gas is compressed from 5 L to 3 L under an average pressure of 2 bars.

During the compression 0.3 kJ of heat is given off. The internal energy of the gas A. decreases by 0.1 kJ

B. is unchanged

C. increases by 0.1 kJ *

D. increases by 0.4 kj

72. A man invested in two investments with

the same present worth but of unequal lives. He is expecting to have ______. A. identical salvage values

B. different salvage values

C. identical equivalent uniform annual

cash flows

D. different equivalent uniform annual

cash flows *

73. What is the origin of the energy

conservation equation used in flow systems?

A. Newton’s first law of motion B. Newton’s second law of motion C. The first law of thermodynamics * D. The second law of thermodynamics

74. Which is not a property of Molybdenum?

A. It has very low tendency for oxide

formation * B. It is used extensively in mercury

switches C. It has lower melting point than

tungsten D. It is wetted by mercury

75. Which one of the following is standard

temperature and pressure (STP)?

A. 0 K and one atmosphere pressure B. 0 degree Fahrenheit and zero

pressure C. 0 degree Celsius and atmosphere

pressure * D. 100 degree Celsius and zero

pressure

76. The quantum mechanics model of the atom is based on

A. the quanta, or measured amounts

of energy of a moving particle B. the energy of a standing electron

wave that can fit into an orbit * C. calculations of the energy of the

three-dimensional shape of a circular orbit of an electron particle

D. Newton’s law of motion, but scaled down to the size of electron particle

77. Substance A has a pH of 2 and

substance B has a pH of 3. This means that

A. substance A has more basic

properties than substance B B. substance B has more acidic

properties than substance A C. substance A is ten times more

acidic than substance B * D. substance B is ten times more

acidic than substance A

78. A fish frozen in the clear ice (n=1.3) of a frozen lake appears to be 40 cm below the surface. Its actual depth is A. 31 cm

B. 46 cm

C. 52 cm *

D. 80 cm

79. On what plane is the Mollier diagram

plotted?

A. p-V B. p-T C. s-u D. h-s *

80. The nuclear force is

A. attractive when nucleons are closer

than 10^-15 m * B. repulsive when nucleons are closer

than 10^-15 m

C. attractive when nucleons are farther than 10^-15 m

D. repulsive when nucleons are farther than 10^-15 m

81. During wet season, some roads in Metro

Manila have coefficient of frictions reduced to half their usual values. Under this condition, the maximum safe velocity for rounding the curves of these roads will reduce to ____ of its usual value.

A. 69 % B. 50 % C. 25 % D. 71 % *

82. An acid solution of unknown

concentration is to be titrated with a

standardized hydroxide solution that will be released from a buret. The buret should be rinsed with _____.

A. a sample of the hydrogen solution * B. a neutral salt solution C. distilled water at room temperature D. hot distilled water

83. What is another term for work

hardening? A. Strain hardening * B. Stress hardening C. Function hardening D. Substance hardening

84. Based on the Bohr-Sommerfeld model

of atom, what electron orbital momentum state is it if the angular momentum is equal to 1?

A. D state B. S state C. P state * D. G state

85. The rate of radioactive decay can be

increased by increasing the

A. pressure B. temperature C. size of the sample * D. all of the above

86. Which of the following materials have

the largest ultimate strength for tension? A. Copper * B. Aluminum C. Iron D. Pine wood (parallel to grain)

87. Light leaves a slab of transparent

material whose index of refraction is 2.0

at an angle of refraction of 0. The angle of incidence is

A. 0 *

B. 30

C. 45

D. 90

88. Which of the following units are

measures of rates?

A. amp and volt B. coulomb and joule C. volt and watt D. amp and watt *

89. Which quantity below is known as the

single payment present worth factor?

The symbol ^ represents exponentiation. A. (1 + i)^

-n *

B. (1 + i)^n

C. (1 + i) D. 1/[(1 + i)^n – 1]



90. How is the material purchase price

variance defined?

A. (quantity purchased x actual price) – (quantity purchased x standard price) *

B. (quantity issued – standard

quantity)(standard price) C. (actual price – standard

price)(quantity used) D. (quantity purchased – quantity

used)(actual price) 91. KBP Code imposes what penalties for

stations committing a grave offense for the second time during radio broadcasting?

A. P 40,000 * B. P 30,000 C. P 50,000 D. P 20,000

92. What is work-in-process classified as?

A. An asset * B. A liability C. An expense D. A revenue

93. The gradient series cash flow increases

by G each year until t = n, which time the final cash flow is _____. The symbol ^ represents exponentiation.

A. (n – 1)G * B. n(G) C. (1 + G)^

n

D. n(1+G) 94. If a Carnot engine exhausts heat at

140F is to have an efficiency of 33%, it must take in heat at

A. 200F

B. 440F *

C. 660F

D. 900F

95. Which of the following thermodynamic

relations is incorrect?

A. TdS = dU + pdV B. TdS = dH – Vdp C. U = Q – W D. H = U – pV *

96. A man borrows P 100,000 at a rate of

6% compounded continuously for 5 years. How much must be pay annually if money is compounded continuously? A. P 22,591.22 B. P 23,859.87 * C. P 24,385.29 D. P 25,338.16

97. Adding sodium chloride to water raises

the boiling point of water because

A. sodium chloride has a higher boiling point

B. sodium chloride ion occupy space at the water surface *

C. sodium chloride ions have stronger ion-ion bonds than water

D. the energy of hydration is higher

98. If the shear stress in a fluid varies

linearly with the velocity gradient, which of the following describes the fluid?

A. It is inviscid. B. It is a perfect gas. C. It is a Newtonian gas. *

D. It has a constant viscosity.

99. The greenhouse effect results in warmer temperature near the surface because

A. clouds trap infrared radiation near

the surface B. some of the energy is re-radiated

back toward the surface * C. carbon dioxide molecules do not

permit the re-radiation to leave D. carbon dioxide and water vapor

both trap infrared radiation 100. What would happen to the energy of a

photon if its wavelength were reduced by a factor of 2?

A. It would increase by a factor of 2. * B. It would increase by a factor of 4. C. It would decrease by a factor of 2. D. It would decrease by a factor of 4.

END

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