Air core transformers are ____.
A. efficient
B. inefficient
C. as efficient as iron/steel core transformers
D. about 30 percent efficient
Answer: B
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One major advantage of using a masonry saw is the reduced amount of dust caused by the dry sawing process.
Answer the following statement true (T) or false (F)
The number of 4' × 8' panels of vertical siding (to the nearest panel) required for a hip roof structure that is 40' long and 25' wide with 10' high walls, fifteen 3' × 5' windows, one 8' × 7' garage door, and two 8' × 7' sliding doors is _____.
a. 34 b. 36 c. 38 d. 40
An oscilloscope's seconds/division switch is set on 20 ?s/cm. If the trace is 7.5 cm long, what is the period?
A) 0.0015 s B) 1.5 ?s C) 5 ?s D) 150 ?s
The output unit of a PC performs calculation and logical decisions
Indicate whether the statement is true or false