ASE-Style Multiple Choice
Which of the following is LEAST-Likely a type of punch?
A. a center punch
B. a drift punch
C. an aligning punch
D. a panel punch
Answer: D
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All chemical thinners work best at temperatures in the 40s, whereas overthinning will occur at temperatures in the mid to upper 60s, and no thinner is safe at high temperatures
Indicate whether the statement is true or false
If an electrician chooses to use plug fuses in a new electrical installation, they must be ____________________-plug fuses.
Fill in the blank(s) with the appropriate word(s).
The degree of distortion that happens during welding is directly related to the _____
a. surrounding air b. moisture in the air c. position of the weld d. stresses generated during welding
For the circuit shown in Figure P5.41, assume that switches S1 and S2 have been held closed for a long time prior to t = 0. S2 then opens at t = 0; however, S1 does not open until t = 96 s. Also assume
R1 = 5?, R2 = 4?, R3 = 3?, R4 = 6?, and C1 = C2 = 4F.
a. Find the capacitor voltage vC at t = 0.
b. Find the time constant ? for 0 < t < 96 s.
c. Find vC for 0 < t < 96 s.
d. Find the time constant for t > 96 s.
e. Use part c to find the capacitor voltage vC at t = 96 s, and use it to find vc for t > 96s
f. Sketch vC for all time.
