ESAS REFRESHER 4

100問 • 1年前

問題一覧

A train running at 60 kph decelerates at 2.5 m/mins for 12 mins. How far in km did the train travel during that time?

11.82

If a baseball player can throw a ball a maximum distance of 200 ft over the ground. What is the maximum vertical height to which he can throw it? Assume the ball to have the same initial speed in each case

50 ft

A lead hammer weighs 10 lbf. In one swing of the hammer, the nail is driven 0.6 inches into a wood block. The velocity of the hammer's head at impact is 18 ft/sec. What is the average resistance of the wood block?

1010 lbf

A phonograph turntable rotates at a constant rate of 78 rpm it is found that a small object placed on a record will remain at rest relative to the record if the distance from the center is less than 3 inches, but will slip if the distance is any greater. What is the coefficient of static friction between object and record?

0.52

Modulus of Resilience" is

A measure of materials ability to store stain energy

Poisson's ratio is the ratio of the

Unit lateral deformation to the unit longitudinal deformation

A steel pipe 1.25 m in diameter is required to carry an internal pressure of 760 kPa. If the allowable tensile stress of steel is 140 MPa, determine the required pipe thickness

3.4 mm

A surveyor's 100-ft steel tape is 99.990 ft long at 69°F and 99.999 ft long at 80°F. What distance would have to be measured with the tape to establish a true length of 350 ft at 95°F?

349.96 ft

Cavitation is the result of

static pressure in a fluid becoming less than fluid vapor pressure

A test specimen with a circular cross section has an initial gage length of 500 mm and an initial diameter of 60 mm. The specimen is placed in a tensile test-apparatus. When the instantaneous tensile force in the specimen is 60 kN, the specimen has a longitudinal elongation of 0.16 mm and lateral decrease in diameter of 0.0151 mm. What is the modulus of elasticity?

66.3 GPa

Which of the following must be satisfied by the flow of any fluid, real or ideal? I. Newton's second law of motion II. the continuity equation III. the requierement of a uniform velocity distribution IV. Newton's Law of viscosity V. the principle of conservation of energy

I, II and V

At or below critical velocity in small pipes or at very low velocities, the loss of head due to friction.

varies directly as velocity

A circular access port 2 ft in diameter seals an environmental test chamber that is pressurized to 15 psi above external pressure. What force in Ibs does the port exert upon its retaining structure?

6800

A bubble at the bottom of the sea has four times the volume as it reaches the surface. How deep is the sea? Take sp. gr. of sea water 1.03.

30.08 m

A pressure gauge 7 m above the bottom of the tank containing liquid reads 92 kPa, another gauge height 5 m reads 105 kPa. Determine the specific weight of the liquid.

6.5 kN/m^2

Water flows through a long ½ inch hose at 3 gallons per minute. Water velocity in ft/sec is nearest to:

Which of the following is NOT a thermodynamic property

Phase

A compression ignition cycle is modeled by which ideal cycle

Diesel cycle

Which of the following statement about Mach number (M) is FALSE:

Mach no, has the dimensions of velocity

If the specific volume of a gas is 0.72m^3/kg what is its specific weight

13.63 N/m^3

In an adiabatic, isentropic process p_{1} = 20c psi, k = 1.4

786° R

Work of a polytropic (n = 1.21) compression of air (C_{0} / C_{v} = 1.4) in a system with moving boundary from P_{1} = 15 psia, V_{1} = 1f * t ^ 3 to P₂ = 150 0.15 ft is:

5150ft - lb

A Carnot cycle heat engine operates between 1540°F and 40°F and rejects 250 BTU/lb to the low temperature reservoir or heat sink. Maximum entropy change in BTU/lb-°R of the working fluid for any process in the cycle is:

0.50

In manufacturing process 1000 kW of waste heat at temperature 327 deg * C is available for utilization purpose. If ambient temperature is 27 deg * C the designed heat engine producing 510 kW of net power output will be

Impossible

What is true about the polytropic exponent, n, for a perfect gas undergoing isobaric process?

n = 0

Which of the following metals has the highest specific heat capacity

Aluminum

A pressure cooker reduces cooking time because of the

Boiling point of water inside is elevated

In the periodic table of elernents, which ONE of the following is light metal

Potassium

A type of reaction has two compounds as reactants and two compounds as products

Double displacement

The electronic configuration, 1s^2 2s^6 3s^2 3p^5 is that of

A halogen

Given 50 deg. C convert to deg. F is

122

How Many moles are represented by 6.38 gm of CuSO4?

0.04

What is the pH value for H ^ + concentration 5.4x10 ^ - 6 mol/L?

5.27

The purpose of nickel in steel alloying is to increase.

toughness, hardness, corrosion resistance, and reduce thermal expansion

The maximum hardenability of any steel depends on

the carbon content

The technique widely used in determining the inter-atomic distances in ionic crystals is:

x-ray diffraction

Which of the following is not a type a crystalline lattice imperfection?

Diffusion

What term is used to describe a polymer that has rubberlike properties?

Elastomer

What does BIOS means?

Basic Input/Output System

The simplex method is extremely efficient in solving which of following classic problems

the "allocation problem

The binary coding scheme most common used in microcomputers is called

ASCII

What is the 7's compliment of (1234) base 8

6543

What value would the computer assign to the variable D8-1.0E8-1.5E6

9.85x10^7

A Mars rover communicates with the earth over a 128 kbps full-duplex channel. The distance between Mars and earth is approximately 60 * 10 ^ 9 m. Neglecting control, parity, and other error-checking bits. How much time elapses between when the rover begins transmitting an 8 MB photograph back to the earth and when it receives confirmation receipt signal?

920 sec

What is the factor name of the formula (1 + i) ^ n ?

Single payment compound amount factor

Which of the following does not affect owner's equity?

license to start business

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

speculative capital

Which of the following situations has a conventional cash flow so that an internal rate of return can safely be calculated and use?

You invest in a safe dividend stock and receive a dividend each year

Measure of effectiveness of investment of capital?

rate of return

Given a nominal interest rate per year of 10% and two compounding subperiods per year, what is the effective rate per compounding subperiod?

What is the S.I. unit of thermodynamic temperature?

kelvin

The voltage of a galvanic cell does not depend on which of the following parameters?

Concentration of solutions

The mole is the basic unit of measurement in chemistry. Which of the following is NOT equal to or the same as one mole of the substance indicated?

16 g of Oxygen (O₂) molecules

Two major types of chemical bonds are observed in chemical bonding lonic and covalent Which of the following has a bond that is the least ionic in character?

H₂

A bicycle tire has a volume of 600 cm³. It is inflated with CO₂ to a pressure of 80 psi at 200 How many grams of CO, are contained in the tire?

5.98 g

What is the pH value of Hydrochloric Acid with 0.5 M?

0.301

Helium is found to difuse two times faster than gas "X". What is the molecular mass of gas (Hint: Applying Graham's Law of effusion, rate = 1/(MW))

16.0 g/mol

Plastically deforming a metal generally results in

Increased strength and decreased ductility

Which of the following materials is NOT a viscoelastic material?

metals

The diffusion of defects through a crystal is described by:

Fick's law

A thermocouple measures which of the following?

Ratio of a temperature to a standard

Which of the following is a non-renewable source of energy?

nuclear

An object 6 cm high is placed 12 cm away from a concave mirror whose focal length is 36 cm. What is the height of the image?

9 cm

A device that transforms a number of vertical bars into a computer readable program

bar code reader

To reach the end of a document (doc or docx.) you use the key?

Ctrl+End

All are basic operation in Boolean Algebra except

Logical subtraction

In printers, the term resolution is a measurement usually expressed in linear horizontally and vertically of the sharpness of a printed image.

dots/inch

A 15 pins, 3 row, female connector is use for

VGA

It is a family of general-purpose, high-level programming language is BASIC which means?

Beginner's All-purpose Symbolic Instruction.code

On the internet, the highest subdivision, usually a country. However in the United states, the subdivision is by organization, such as commercial (.com), educational (edu) or government (goy)

domain

In a spreadsheet, the formula $A$3+$B3+D2 is entered into cell C2, The contents of cell C2 are copied and pasted into cell D5. The formula in cell D5 is?

$A$3 +$B6+E5

What frequency range does cellular phone belongs

UHF

Which of the following is NOT an octal number

What is the Octal equivalent of Hexadecimal number EE

356

For the program segment shown, the input value of X is 5. What is the output value of T? INPUT X N = 0 T = 0 DO WHILE N<X T = T + X ^ N N = N + 1 END DO OUTPUT T

781

What is the principal accounting equation?

Equity Asset - Liability

A certain company is planning to grow 30% during the next fiscal year. What has to increase if this company is to achieve their goal

any combination of A, B and C

Capitalized cost of any structure or property is computed by which relationship?

First cost+ cost of perpetual maintenance

If i interest rate, n = period, P = present worth and F = future worth, which of the following best describes Future worth?

P(1+i)^n

Firm A uses full absorption costing while firm Buses variable product costing. How will the financial statements of these companies differ?

Firm A has a higher cost of goods sold, higher inventory value, and higher retained earnings

What must two investments with same present worth and unequal lives have?

Different equivalent uniform annual cash flows

Defined as the creative problem solving process of planning, organizing, leading, and controlling an organization's resources to achieve its mission and objectives.

Management

What refers to management function which is to encourage others to follow the example set for them, with great commitment and conviction?

Leading

What is defined as an organized method of providing past, present, and projected information on internal operations and extemal intelligence for use in decision-making?

Management Information System

In project management, "R & D" stands for:

Research and Development

An investment currently cost P28.000. If the current inflation rate is 6% and the effective annual return on investment is 10%, approximately how long will it take for the investment's future value to reach P40,000?

2.3 yrs

A P5000 is put into an empty savings account with a nominal interest rate of 5%. No other contributions are made to the account. With monthly compounding, how much interest will have been earned after 5 yrs

P1416.79

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

P41,583.28

A newly-acquired equipment requires an annual maintenance cost of P15,000. If the annual maintenance cost is increased by 20% each year every year for 10 yrs. What is the estimated present worth of the maintenance costs if money is worth 12%

P186.295.02

The original cost of equipment is P150,000 and is depreciated by 10% sinking fund method. What is the annual depreciation charge if the book value after 10 years is the same as it had been depreciated at P14,000 each year by straight line formula?

P8784.36

Also known as Old EE law?

R.A. 184

What is sec. 37 of Article IV R.A. 79207

Certificate of specialty

Fine/penalty of a person who will commit against the rule of anti-pilferage act?

More than P10,000

Overcurrent devices shall not be located in the vicinity of easily ignitable material such as in

clothes closets

Grounding shall NOT be connected to

soldered fittings

OSHS Rule number for Personal Protective Equipment and Devices safety is

1080

In OSHA what color is used to alert people to the presence of an emergency egress? This is important for helping people escape from an area if they need to, also indicates safety equipment or information.

Green

It refers to the basic rules, procedures, requirements and standards that govem the operation, maintenance and development of the electric distribution in the Philippines

Philippine Distribution Code (PDC)

What does acronym "SPUG" mean?

Small Power Utilities Group

100

As specified by the Energy Regulatory Commission, a contestable customer is a customer with a demand of at least ______ MW

One

DC CIRCUITS POWERLINE

premopremo remo · 75問 · 2年前

DC CIRCUITS POWERLINE