Fiber-optic cable transmits light instead of _______________
A. electronic signals
B. high speed
C. telephone transmissions
D. computer transmissions
A
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Some starters have ____ compression disk resistors and are used for starting polyphase squirrel cage motors.
a. graphite b. steel c. platinum d. stainless steel
Which of the following tools and supplies would you need to install a water closet?
a. safety glasses b. miniature hacksaw c. tongue and groove pliers d. all of the above
A welding symbol might indicate a weld to be on the arrow-side, the far side, or both sides.
Answer the following statement true (T) or false (F)
What causes the little pops and ticking that can be heard in some furnaces before the blower comes on?
A) Small quantities of water in the gas B) Mechanical rattles from an unbalanced indoor blower C) Small concentrated pockets of gas that explode D) Expansion of the heat exchanger as it heats up