FE MEGASET

Which of the following is the correct equation for a straight line depreciation rate?
A) (salvage value)(salvage life)^-1

B) (salvage life)(salvage value)^-1

C) (%salvage value)(salvage life)^-1

D) (100%-%salvage value)(salvage life)^-1

D) (100%-%salvage value)(salvage life)^-1

Fluid mechanics definition for shear stress

Your facility specializes in dealing with a large variety of pure alkali and alkali earth metals, along with creating numerous anhydrous salts for commerical use. What kind of white hazard rating would potentially cause the least amount of possible accidents?

A) Alkali

B) Oxy

C) W

D) Cor

C) W

The United States military has asked your company to create an explosive compound that is relatively inert when exposed to fire or high heat. What should the fire/hazard symbol reflect for flammability and reactivity, respectively?

A) 3, 3

B) 2, 2

C) 0, 4

D) 2, 1

C) 0, 4

The corrosion of metals can be prevented by doing some coating of material, which is more anodic than the metal. Which of the following coatings will protect the corrosion of iron products?

 

I) Zinc

II) Gold

III) Aluminum

IV) Magnesium 

Only I, III, and IV

Which of the following statements about the relationship between annealing and normalizing temperatures is true?

A) Annealing temperature is the same as normalizing temperature.

B) Annealing temperature is greater than normalizing temperature.

C) Annealing temperature is less than normalizing temperature.

D) Annealing temperature is sometimes greater and sometimes less than normalizing temperature.

C)Annealing temperature is less than normalizing temperature.

Which of the following heat treatment series can make a medium-carbon steel hard strong, as well as ductile?

A)Austenitizing followed by quenching

B) Austenitizing, then tempering, followed by quenching

C) Tempering, then quenching, followed by austenitizing

D) Austenitizing, then quenching, followed by tempering

D) Austenitizing, then quenching, followed by tempering

Water-cement (W/C) ratio is the primary factor affecting the strength of concrete. Based on this, which of the following statements is true?

I) Compressive strength decreases with an increase in W/C in the case of air-entrained concrete.

II) Compressive strength decreases with an increase in W/C in the case of non-air-entrained concrete.

III) Compressive strength increases with an increase in W/C in the case of air-entrained concrete.

IV) Compressive strength increases with an increase in W/C in the case of non-air-entrained concrete.

A) I, II

B) I, IV

C) II, III

D) III, IV

A) I, II

If a system is subjected to a suddenly applied nonperiodic force, the response will be:

A) periodic.

B) steady.

C) transient.

D) None of the above

C) transient

Since the forcing function dies too soon, the steady-state solution, which has a direct dependence on the forcing function, will also die. Therefore, the overall response becomes a transient one.

Find the volume of 0.650 N Ca(OH)₂ needed to completely neutralize 55.0 mL of 0.250 N H₃PO₄.

21.2 mL

(N₁V₁ = N₂V₂)

Find the number of electrons in N shell.

32

At the median lethal single dose (LD₅₀), what is true about the No Observable Adverse Effect Level (NOAEL)?

A) It doesn't say anything about the NOAEL.

B) The NOAEL is 50% of the median lethal dose.

C) For 50% of subjects, the NOAEL is reached.

D) The NOAEL is close to the LD₁₀ of the toxin.

A) It doesn't say anything about the NOAEL.

LD₅₀ (Lethal Dose, 50%) is the dose at which 50% of exposed test organisms die from acute exposure to a toxic substance. NOAEL (No Observed Adverse Effect Level) is the highest dose at which no adverse effects are observed in test subjects.

If austenitized plain carbon steels are quenched in air, what microstructure is ordinarily produced?

Pearlite

In steel alloys, when austenite is cooled, which of the following microstructures may be produced?

I) Pearlite

II) Bainite

III) Martensite

IV) Spheroidite

I, II, and III

Which of the following is the best definition for toughness of a material?

A) It is a material’s ability to be permanently deformed without failure when a force is applied.

B) It is the measure of a material’s ability to absorb highly localized rapidly applied loads.

C) It is the resistance of a material to localized deformation.

D) It is the property of a material to absorb energy when it is deformed elastically.

B) It is the measure of a material’s ability to absorb highly localized rapidly applied loads (notch toughness)

A is ductility, C is hardness, and D is resilience

Which of the following is indicated by a larger ASTM grain size number?

A) More grains per unit volume

B) More grain boundary area per unit volume

C) Smaller grain sizes

D) All of the above

D) All of the above

For a concrete mix with a water-cement ratio of 0.5, a slump of 3.5 inches, cement content of 556 lb/yd³, sand content of 36%, and air content of 4%, which of the following conditioning procedures can lead to the highest 28-day compressive strength?

A) Continuously cured in air  

B) Continuously moist-cured

C) Cured in moisture for 7 days and cured in air for 21 days

D) Cured in moisture for 14 days and cured in air for 14 days

D) Cured in moisture for 14 days and cured in air for 14 days

Molecular weight of air

29 g/mol

What is the coordination number of a simple cubic structure unit cell?

6

An object is placed under tensile force. Which action decreases the potential energy by half?

A) The length is decreased by one fourth.

B) The cross-sectional area is decreased.

C) The force is increased.

D) The modulus of elasticity is doubled.

D) The modulus of elasticity is doubled.

One end of a carbon steel bar was cold-worked while the other end was not cold-worked. Which end is anodic during corrosion?

A) The cold-worked end

B) The noncold-worked end

C) There is no corrosion reaction, so there is no anode.

D) Both ends are anodic.

A) The cold-worked end

because it has a higher energy

Focus of parabola

(h + p/2, k)

Foci of ellipse

(-ae,0) and (ae,0)

ae = c

eccentricity of a ellipse

e = c/a

Focus of hyperbola

(±ae,0)

product rule

u’v + v’u

quotient rule

(u’v-uv’)/v²

Chain rule

u’(x)f’(x)

Formula for finding the value at the end of x amount of years for an annuity

Annuity(F/A,i,n)(F/P,i,n)

Effective interest rate for compounded continuously

i_effective = e^r-1

True or False
When interest is compounded continuously its effective rate must be more than nominal annual rate

True

What angle units are the formulas for statics and dynamics in?

RADIANS

Which of the following statements about the diffusion coefficient D is false?

A) The diffusion coefficient is affected by temperature.

B) The diffusion coefficient is a function of proportional constant D₀

C) Proportional constant D₀ is a function of temperature.

D) The diffusion coefficient decreases with the increase of activation energy.

C) Proportional constant D₀ is a function of temperature.

What is the relationship between the natural logarithm of the diffusion coefficient and the reciprocal of the absolute temperature?

Linear

What do you do in fluid mechanics when you have non cylcindircal shape?

Find the hydraulic diameter!

first increase then decrease

For a closed system, what is the work done for an isochoric process

W = 0

Which item has no direct after-tax effect on cash flow calculations?

A) Operating income

B) Depreciation expense      

C) Initial cost of machine

D) Operating cost

C) initial cost of the machine

Which of the following is not a possible result of strain hardening a ductile metal

A) The metal becomes harder.

B) The metal becomes more ductile

C) The tensile strength of the metal becomes higher.

D) The yield strength of the metal becomes higher.

B) The metal becomes more ductile

What is pressure head?

p/γ

What is the length of the specimen used in the Jominy end-quench test?

100mm

During the hydration of portland cement, heat is:

released

h_g - h_f =

Enthalpy of vaporization

D) The moment diagram is parabolic between B and C.

The creep characteristics of materials are affected by temperature. For metals, above which percentage of the absolute melting temperature (Tm) will creep becomes important?

40%

Which of the following statements regarding concrete is false?

A) Water content affects workability.

B) Increase in water content increases concrete strength.

C) Super plasticizers are the most typical method to increase workability.

D) Air entrainment is used to improve durability

Increase in water content increases concrete strength.

The polytropic compression process of air in a compressor is PVⁿ = constant. What is the value of n in an isothermal compression of an ideal gas?

A) 0

B) -1

C) 2

D) 1

D)1

The ideal gas law for a fixed quantity of material states P₁V₁/T₁ = P₂V₂/T₂.
For an isothermal process, T₁ = T₂ and the temperatures cancel out, leaving P₁V₁ = P₂V₂.

B)

Forward curved fans are used to deliver high air volumes against static pressures in up to 6” water gauges. However, most applications are for pressures in _______ gauges or less.

3”

first increase then decrease

A thermodynamic system includes a boiler and a turbine. 1880 kJ/kg is added to the system by the boiler and the turbine is producing 400 kW of power. If we want to write the first law of thermodynamics for the system, which one of the following is correct?

A) ΔQ = 1880 kJ/kg for the boiler and W = -400 kW for the turbine

B) ΔQ = 1880 kJ/kg for the boiler and W = 400 kW for the turbine 

C) ΔQ = -1880 kJ/kg for the boiler and W = -400 kW for the turbine 

D) ΔQ = -1880 kJ/kg for the boiler and W = 400 kW for the turbine 

B) ΔQ = 1880 kJ/kg for the boiler and W = 400 kW for the turbine

T4

Which end condition results in the strongest column? Assume that the columns are made of the same material and have the same dimensions.

A) Pinned-pinned

B) Fixed-fixed

C) Fixed-pinned

D) Fixed-free

B) Fixed-fixed

TF = Y(s) / X(s) = G(s)

A transfer function is generally represented by;

A) Zeroes / Poles

B) Zeroes × poles

C) Poles / Zeroes

D) Zeroes + poles

Zeroes / Poles

At what percentage of ambient workplace air will methane become potentially explosive

5%

A₁ and A₂ represent the inlet and the throat area of the Venturi meter.

D

An aircraft is designed to fly at a high speed of 1700 mph. The Mach number is 3.5. What is the aircraft regime?

Supersonic since ma = 3.5> 1

Which one of the following is an intensive property?

A) The mass of an object divided by its volume

B) A measurement of the amount of matter in an object

C) A measurement of the gravitational force of attraction of the earth acting on an object

D) A measurement of the amount of space a substance occupies

A) The mass of an object divided by its volume

How to calculate annual net cash flow

Annual net cash flow = cash flow from operations – income taxes

Is depreciation tax dectuible?

Yes!

How to calculate income tax?

Income tax = (cash flow - tax savings)*income tax rate

A pole is a root of the characteristic equation or  

s+2=0

Therefore:

s = -2

 is the location of the single pole

The ratio of Fe³⁺ / Fe²⁺ in ferrous oxide is given as 0.04 / 0.94. What percentage of cation sites is vacant?

A) 6

B) 4

C) 2

D) 0

2

To balance the charge, each missing Fe²⁺ ion must be compensated by two Fe³⁺ ions. Out of 100 cation sites, four are Fe³⁺ and 94 are Fe²⁺. Therefore, only 2 are vacant.

In a PID control feedback loop, what is the main function of the integral type controller?

A)It's a controller gain that modifies the controller o/p proportional to the error.

B) It's a controller gain that modifies the controller o/p proportional to the integral of the error.

C) It's a controller gain that modifies the controller o/p proportional to the error rate of change.

D) None of the above.

B) It's a controller gain that modifies the controller o/p proportional to the integral of the error.

Which of the following statements about cold working and quenching of a steel alloy rod is incorrect?

A) Both cold working and quenching increase alloy strength.

B) Both cold working and quenching increase alloy hardness.

C) Both cold working and quenching increase alloy strength by increasing the number of dislocations in the alloy.

D) Both cold working and quenching reduce alloy ductility.

Answer C is correct: Cold working and quenching change the mechanical properties of a steel alloy by different mechanisms. Cold working increases the number of dislocations in the alloy, while quenching changes austenitized steel alloys into the martensite phase

30 kJ

kJ, kg, J/K, cm³

A spacecraft orbits in a circular path around earth and then moves into a different circular path in which the spacecraft moves more slowly than in the first orbit. Compared with the first orbit, which of the following statements about the second orbit is true?

A) There is smaller total mechanical energy, but a bigger radius.

B) The total mechanical energy does not change, but the radius becomes smaller.

C) At the same time, there is more mechanical energy and a larger radius.

D) The radius become smaller, but the mechanical energy is enhanced.

C) At the same time, there is more mechanical energy and a larger radius.

Which of the following statements is true for a pressurized cylindrical vessel?

A) Longitudinal stresses are greater than both the radial and tangential stresses.

B) Longitudinal stresses are independent of the radius of the vessel.

C) Both longitudinal and tangential stresses are dependent on the radius of the vessel.

D)Tangential stresses are independent of the radius of the vessel.

C) Both longitudinal and tangential stresses are dependent on the radius of the vessel.

How will the glass transition temperature, T_g, of an amorphous polymer change if the cooling rate of the polymer is increased?

A) Does not change

B) Increases

C) Decreases

D) Cannot be determined

B) Increases

What is "slump" an indication of?

A) The consistency of concrete

B) The posture of a truck driver

C) The hardness of concrete

D) The water content of concrete

A) The consistency of concrete

The robustness of a control system can be studied using which of the following?

A) The GM, PM, and the peak of the sensitivity function.

B) The poles on the jω axis

C) The zeros on the real axis.

D) The steady state error.

A) The GM, PM, and the peak of the sensitivity function.

A pressure tank is made of a parallelogram plate that is rolled and welded. If a torque T acts on the tank in addition to the inner pressure, what kind of stresses exist on an element in the welded line?

Nominal stresses in the x & y directions and shear stresses

Formula for taxable income

Taxable income = income – depreciation

Which of the following systems could be considered a system in thermodynamic equilibrium?

 

A) Water supply in a pressurized pipe

B) The warming of a room or building by a furnace

C) Ice cubes in a bowl outside the freezer

D) Boiling water in an uncovered pan at a steady high flame on the stove

D) Boiling water in an uncovered pan at a steady high flame on the stove

The temperature and specific volume of a simple substance are known. Which one of the intensive properties below is needed to be able to determine the rest of the properties?

A) Pressure

B) Specific enthalpy

C) Density

D) None of above

None of the above, For a simple substance, the specification of any two intensive, independent properties is sufficient to fix all the rest.

What are the primary constituents of portland cement?

A.

Calcium silicates

B.

Calcium sulfate

C.

Aluminates of calcium

D.

Aluminoferrites of calcium

Calcium silicates

Which of the following solid phases exist in hydrated cement paste?

A.

Calcium silicate hydrate

B.

Calcium hydroxide

C.

Calcium sulfoaluminates

D.

All of  the above

All of  the above

the forces of attraction between molecules.