Describe how a tap is used.
What will be an ideal response?
One of the most practical and widely used methods of producing internal threads is to cut them with a round, formed, thread-cutting tool called a tap. The tap is inserted in a hole that is the same diameter as the root diameter of the thread to be produced. As the tap with its multiple cutting edges is turned, it advances into the hole to cut a thread. The thread is a specified size and shape to correspond with a mating threaded part. This process is called tapping, and the hole that is threaded is called a tapped hole. When the hole is a drilled hole, the drill is called a tap drill.
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How is radio propagation on land different from that in free space?
What will be an ideal response?
How much of the world is covered by forests?
What will be an ideal response?
Select a shop-welded/field-bolted connection for a W16 x 40 beam framing into a W21 x 50 girder with a reaction of 26 kips. Assume A992 steel, E70XX electrodes, and ¾"-diameter A325-N field bolts.
What will be an ideal response?
A switch controls the flow of electricity by:
A) Breaking the circuit when it is turned off. B) Modulating the current to a low level when it is turned off. C) Adding resistance to the circuit when it is turned off. D) Using up all the electricity when it is turned off.