The memory section of the PLC which temporarily holds data as mathematical functions or logic decisions are made is the __________.
A. executive
B. scratch pad
C. data table
D. user program
Answer: B
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? Identify and state the historical significance of Frances Perkins.
What will be an ideal response?
When copper is being brazed to steel, _____
a. the technique is identical to brazing copper to copper b. more heat is applied to the steel fitting c. a filler metal with a high phosphorus content is best d. flux and a filler metal with a high silver content is used
For the circuit shown in Figure P15.41, let vin be a 1-kHz sinusoidal signal with 0° phase angle, 0 VDC offset, and 20-V peak-to-peak amplitude. Let vG be a rectangular pulse train, with pulse width 10 ?s and period 100 ?s with the leading edge of the first pulse at t = 0.
a. Sketch vo if the RC circuit has a time constant equal to 20 ?s.
b. Sketch vo if the RC circuit has a time constant equal to 1 ms.
The floor, ceiling, or roof assembly designed to resist in-plane (shear) forces is the _____.
a. diaphragm b. header c. lateral d. curtain wall