Part II Flashcards
(47 cards)
For a given function, f(t) = f(-t). What type of symmetry does f(t) have?
a. odd symmetry
b. even symmetry
c. rotational symmetry
d. quarter-wave symmetry
b. even symmetry
The Taylor series expansion for cosx contains which powers of x?
a. 0, 2, 4, 6, 8,…
b. 1, 3, 5, 9,…
c. 1, 2, 3, 4, 5,…
d. ½, 3/2, 5/2, 7/2,…
a. 0, 2, 4, 6, 8,…
What is the name for a vector that represents the sum of two vectors?
a. scalar
b. resultant
c. tensor
d. moment
b. resultant
What is the term that describes a possible outcome of an experiment?
a. sample space
b. a random point
c. an event
d. a finite set
c. an event
In probability theory, what is the term that
describes the set of all possible outcomes of an experiment?
a. a set of random events
b. a fuzzy set
c. a cumulative distribution
d. a sample space
d. a sample space
If two random variables are independently distributed, what is their relationship?
a. they are not identically distributed
b. they are uncorrelated
c. they are mutually exclusive
d. either option A or option B is true
b. they are uncorrelated
How is the capital recovery factor (A/P, i, n) related to the uniform series sinking fund factor (A/F, i, n)? i is the effective annual rate of return, and n is the number of periods.
a. (A/P, i, n) = (A/F, i, n) + i
b. (A/P, i, n) = (A/F, i, n) – i
c. (A/P, i, n) = (A/F, i, n)/i
d. (A/P, i, n) = [(A/F, i, n) + i]/n
a. (A/P, i, n) = (A/F, i, n) + i
What is an annuity?
a. the future worth of a present amount
b. an annual repayment of a loan
c. a series of uniform amounts over a
period of time
d. a lump sum at the end of the year
c. a series of uniform amounts over a
period of time
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. 100%net salvage value/estimated
service life
d. average net salvage value/estimated
service life
a. (100% - %net salvage value)/(estimated service life)
Which of the following is true regarding the minimum attractive rate of return used in judging proposed investments?
a. it is the same for every organization
b. it is larger than the interest rate used to
discount expected cash flow from
investments
c. it is frequently a policy decision made
by an organization’s management
d. it is not relevant in engineering
economy studies
c. it is frequently a policy decision made
by an organization’s management
Which of the following situations has a conventional cash flow so that an internal rate of return can be safely calculated and used?
a. you purchase a house and pay the bank
in monthly installments
b. you lease a car and pay by the month
c. your company undertakes a mining
project in which the land must be
reclaimed at the end of the project
d. you invest in a safe dividend stock and
receive dividends each year
d. you invest in a safe dividend stock and receive dividends each year
What is a borrower of a particular loan almost always required to do during repayment?
a. pay exactly the same amount of interest each payment
b. repay the loan over an agreed-upon amount of time
c. pay exactly the same amount of principal each payment
d. both options A and C
b. repay the loan over an agreed-upon
amount of time
What is “work in process” classified as?
a. an asset
b. a liability
c. an expense
d. a revenue
a. an asset
What is the acid test ratio?
a. the ratio of owner’s equity to total
current liabilities
b. the ratio of all assets to total liabilities
c. the ratio of current assets (exclusive of
inventory) to total current liabilities
d. the ratio of gross margin to operating,
sales and administrative expenses
c. the ratio of current assets (exclusive of
inventory) to total current liabilities
Which of the following affects most of the electrical and thermal properties of materials?
a. the atomic weight expressed in grams
per gram-atom
b. the electrons, particularly the
outermost ones
c. the magnitude of electrical charge of
the protons
d. the weight of the atoms
b. the electrons, particularly the
outermost ones
What are valence electrons?
a. the outer-shell electrons
b. electrons with positive charge
c. the electrons of complete quantum shells
d. the K-quantum shell electrons
a. the outer-shell electrons
What is the strong bond between hydrogen atoms called?
a. the ionic bond
b. the metallic bond
c. ionic and metallic bonds
d. the covalent bond
d. the covalent bond
What are Van der Waals forces?
a. weak secondary bonds between atoms
b. primary bonds between atoms
c. forces between electrons and protons
d. forces not present in liquids
a. weak secondary bonds between atoms
In molecules of the same composition, what are variations of atomic arrangements known as?
a. polymers
b. non-crystalline structures
c. monomers
d. isomers
d. isomers
Which of the following accurately describes differences between crystalline polymers and simple crystals?
I. crystalline polymers, unlike crystals, are
made of folded chains of atoms
II. Crystal size can be increased by raising
the crystallization temperature only in
polymers.
III. While a simple crystal may be totally
crystallized, a polymer can reach only
partial crystallization
a. I only
b. II only
c. III only
d. I and III
d. I and III
What is the atomic packing factor (APF)
for a simple cubic crystal?
a. 0.48
b. 0.52
c. 1.0
d. 1.1
b. 0.52
How many atoms are in the unit cell of a body-centered cubic structure?
a. 1
b. 2
c. 3
d. 4
b. 2
How many atoms are there per unit cell
for a face-centered cubic structure?
a. 1
b. 2
c. 3
d. 4
d. 4
What is the 1st coordination number of a body centered cubic structure?
a. 4
b. 6
c. 8
d. 10
c. 8
