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MAE 488 EXAM 2 questions with verified answers already passed
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MAE 488 EXAM 2 questions with verified answers already passed
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MAE 488 EXAM 2Conservative Force - correct answer ✔✔A force, such as gravity, that performs work over a distance that
is independent of the path taken.
What does a damper resist? - correct answer ✔✔What does a damper resist?
What does a spring resist? - correct answer ✔✔Displacement
Parallel Axis Theorem - correct answer ✔✔I = Icm + md^2
When can gravity be ignored in a vertical mass-spring-damper system? - correct answer ✔✔When the
displacement is defined at equilbrium
kinetic energy formula mechanical - correct answer ✔✔KE=1/2mv^2
The equivalent spring constant of two springs in parallel? - correct answer ✔✔kt = k1 + k2
The equivalent spring constant of two springs in series is? - correct answer ✔✔kt = 1/k1 + 1/k2
kinetic energy rotational - correct answer ✔✔KE = ½Iω^2
The sum of the kinetic and potential is constant when? - correct answer ✔✔Forces considered are only
conservative
If a system has both translational and rotational elements - correct answer ✔✔concept of kinetic energy
to convert to purely translational or rotational
Op Amps Golden rules - correct answer ✔✔1. input terminals have no current ( i1 = i2 = 0)
, 2. op amp will try to maintain zero differential input voltage (vin = 0)
commutator - correct answer ✔✔A device that controls the direction of the flow of current through an
electric motor so force is always in same direction
Back EMF - correct answer ✔✔The emf induced in the spinning coil of electric motor or in any coil in
which the current is changing.
It is proportional to the angular velocity of the motor
What does Ohm's law state? - correct answer ✔✔The current flowing through a resistor at a constant
temperature is directly proportional to the voltage across the resistor
work per unit charge to move current
V = iR
Passive Circuit Element - correct answer ✔✔dissipates power
resistors, capacitors, inductors
Active Circuit Element - correct answer ✔✔energy source
voltage/current sourceop amp
current flowing through voltage supply moves in which direction? - correct answer ✔✔from negative
terminal to postive
current flowing through passive element (dissipates energy) moves in which direction? - correct answer
✔✔from positive terminal to negative
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