Engineering

Question 0

Combined Capacitors

Answer 0

Parallel: C = C(1) + C(2) + … Serial: 1/C = 1/C(1) + 1/C(2) +… …the inverse of combined resistors

Question 1

Resistance

Answer 1

R = rho * (L / A) R: resistance rho: resistivity L: length A: cross sectional area

Question 2

Pressure and Volumetric Flow Rate Change

Answer 2

P(1) / P(2) = (Q(1) / Q(2))^2

Question 3

Bernoulli’s Theorem

Answer 3

Question 4

Power density, power, antenna area, distance, and wavelength

Answer 4

W = AP/(lambda^2 * r^2) W: power density, W/m^2 A: antenna area P: power r: distance lambda: wavelength

Question 5

HAZOP

Answer 5

Hazard & Operability Analysis uses guidewords to identify deviation of process parameters from their design intent.

Question 6

Slip Meter

Answer 6

measures coefficient of friction

Question 7

Power, Potential Difference, & Resistance

Answer 7

When doubling potential difference and keeping resistance constant, power quadruples!

Question 8

Sling Weight Limit & Angle

Answer 8

cosα = w / n*l

w: total weight
n: # sling legs
l: per-leg tension

α: sling leg angle relative to vertical

Question 9

Inductance

Answer 9

L(series) = Σ(L(1)…L(i))

1 / L(parallel) = Σ( 1/L(1)…1/L(i))

…just like combining resistors

Inductance is expressed in units of Henry.