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MAE 488 Exam #2 (Lectures 8 through 16) fully solved already passed
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MAE 488 Exam #2 (Lectures 8 through 16) fully solved already passed
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MAE 488 Exam #2 (Lectures 8 through16)
A damper resist - correct answer ✔✔velocity
A spring resist - correct answer ✔✔displacement
If the work done by a force is path independent, we say the force is a non-conservative force - correct
answer ✔✔False
The sum of the kinetic and potential energy in a system is ALWAYS a constant - correct answer ✔✔False
The parallel axis theorem allows one to calculate the moment of inertia about an arbitrary axis in terms
of a known moment of inertia about a parallel axis - correct answer ✔✔True
In a vertical mass-spring-damper system, gravity can be ignored if the displacement is defined with
respect to - correct answer ✔✔Static Equilibrium
The equation for the kinetic energy of a translating and rotating body with mass (m), velocity (v),
moment of inertia (I), and angular velocity (omega) is - correct answer ✔✔KE = T = (1/2)*m*(v^2) +
(1/2)*I*(omega^2)
The equivalent spring constant for multiple springs in series is simply the sum of all of the spring
constants - correct answer ✔✔False
Springs in parallel are similar to resistors in - correct answer ✔✔Series
Springs in series are similar to resistors in - correct answer ✔✔Parallel
, How do you find the equivalent spring force/resistance for springs in parallel and resistors in series? -
correct answer ✔✔Add them
How do you find the equivalent spring force/resistance for springs in series and resistors in parallel? -
correct answer ✔✔Add the inverses of each component, and then invert the fractional sum
What do springs in parallel and resistors in series have in common? - correct answer ✔✔Same
Deflection/Current
What do springs in series and resistors in parallel have in common? - correct answer ✔✔Same
Force/Voltage
What is the definition of a transfer function? - correct answer ✔✔Laplace transform of the OUTPUT,
divided by the Laplace transform of the INPUT, assuming zero initial conditions
The current in a resistor flows from the negative to the positive terminal - correct answer ✔✔False
In an armature controlled DC motor, the motor speed is controlled by varying the armature current -
correct answer ✔✔True
Impedance is the transfer function with current as the output and voltage as the input - correct answer
✔✔False
DC motors are based on two concepts from physics: ______ force and ______ law - correct answer
✔✔Lorentz Force; Faraday's Law
The Torque constant is the relationship between motor torque and voltage - correct answer ✔✔False
State the two golden rules that govern the operational amplifier - correct answer ✔✔1). No current
through the input terminals (i_1 = i_2 = 0)
2) Zero Voltage differential across the input terminals (V_in = 0)
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