For the LED circuit of Example 9.14, determine the LED power consumption if the LED consumes 30 mA and the diode voltage is 1.5 V. How much power is required of the source?
What will be an ideal response?
Analysis:
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In a twin-span mullion system for a glass curtain wall, _____________.
A) two dead-load anchors are provided at every floor level. B) one dead-load anchor is provided at every floor level. C) only one dead-load anchor is provided for the entire height of the wall. D) one dead-load anchor is provided at every alternate floor level. E) two dead-load anchors are provided at every alternate floor level.
Hard-drawn copper tubing is harder than soft tubing because _____
a. it has been annealed b. it has other metals combined with the copper c. of the drawing process used to manufacture it d. it has been through a special tempering process after forming
ASE-Style Multiple Choice ____ is used to provide anticorrosion protection to weld zones.
A. Weld-through primer B. Self-etching primer C. Sealant D. Undercoat
What is the diametral pitch of a gear with a pitch diameter of 8 and 24 teeth?
a. 3 b. 4 c. 1/3 d. 12