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A Sous-Estimez Pas(D3) > Concepts > Flashcards

Concepts Flashcards

1
Q 
(Differential Equations)
what is the inverse laplace transform of F(s) = (1/(s-3))-(16/(s^2+9))?
A. f(t) = e^-3t  - 16/3 sin3t
B. f(t) = e^3t  - 16/3 sin3t
C. f(t) = e^-3t  - 16/3 cos3t
D. f(t) = e^3t  - 16/3 cos3t
A

B

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2
Q 
(differential equations)
What is the LaPlace Transform of f(t)=1-2e^-2t
A. F(s)=1/s - 2/(s-2)
B. F(s)=1/s - 2s/(s-2)
C. F(s)=1/s - 2/(s+2)
D. F(s)=1/s - 2s/(s+2)
A

C

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3
Q 
(integral calculus)
it is an approximation of an integral by finite sum 
a. newton-raphson 
b. riemann sum 
c. fundamental theorem 
d. leibniz sum
A

B

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4
Q 
(Integral Calculus)
locate the centroid of a quarter circle of radius r on q1 of the cartesian plane. the center point of the circle is at the origin
A. (4r/3pi, 4r/3pi)
B. (3pi/4r, 3pi/4r)
C. (4pi/3r, 4pi/3r)
D. (3r/4pi, 3r/4pi)
A

A

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5
Q

(Eng’g Econ)
are those products that have an income-elasticity of demand greater than one. this implies that as income increases, more income will be spent on these products. examples are appliances entertain ment vacations etc.

A

luxury products

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6
Q

(Engineering Economics)
which of the following is false?
A. consumers are the basic consuming or demanding unit of commodities
B. staple products are goods and services desired after all necessities have been satisfied
C. duopsony involves several sellers
D. demand is the need or desire for a certain product with the willingness to pay

A

B

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7
Q

(Engineering Economics)

considered as the simplest type of business organization wherein the firm is owned and controlled by a single person

A

sole proprietorship

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8
Q

(Engineering Economics)

refers to the situation where the sales generated is just enough to cover the fixed and variable costs

A

break-even

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9
Q

(Engineering Economics)
is the worth of the property determined by a disinterested person in order to establish an amount which is fair to both the buyer and the seller

A

fair value

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10
Q

(Engineering Economics)
is the amount a willing buyer will pay to a willing seller for a property where each has equal advantage and neither one of them is under the compulsion to buy or sell

A

market value

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11
Q

(Engineering Economics)

is the amount of the property as reflected in the book of records of the company

A

book value

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12
Q

(Engineering Economics)

is the amount of the property which the owner believed to be it’s worth as an operating

A

use value

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13
Q

(Engineering Economics)

another word for salvage value

A

resale value

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14
Q

(Engineering Economics)
refers to the satisfaction or pleasure derived from the consumer goods and services is also missed the power to satisfy human wants and needs

A

utility

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15
Q

(Engineering Economics)
a market situation where in a given product is supplied by a very large number of vendors and there is no restriction of any additional vendor from entering the market

A

perfect competition

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16
Q 
(Engineering Economy)
it is the market situation where the action of one supplier affects the few total suppliers to perform a similar action 
A. monopoly
B. perfect competition 
C. duopoly
D. oligopoly
A

D

17
Q 
(Engineering Econ)
which of the following depreciation methods gives the lowest decrease in book value
A. straight line 
B. declining balance 
C. sum of years digit
D. sinking fund
A

D.

18
Q

(SMAT)

another term for circumferential, tangential or hoop stress

A

girth stress

19
Q

(SMAT)

refers to the stress beyond which the material will not return to its original shape and the load is removed

A

elastic limit

20
Q

(SMAT)

permanent deformation caused by excessive stress

A

permanent set

21
Q

(SMAT)
refers to the point where there is an appreciable elongation or yielding of the material even without any corresponding increase of load

A

yield point

22
Q

(SMAT)

refers to the highest ordinate in the stress-strain diagram

A

ultimate stress

23
Q

(SMAT)

sometimes known as the stress at failure

A

rapture strength

24
Q

(SMAT)

actual stress of the material when loaded

A

working stress

25
Q

(SMAT)

maximum safe stress that the material can carry

A

allowable stress

26
Q

(SMAT)

for symmetrically loaded and simply supported beams, maximum moment occurs at the point where shear is equal to

A

zero

A Sous-Estimez Pas(D3) (2 decks)

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