List some of the safety precautions to be observed when using power tools
What will be an ideal response?
Never operate any power equipment unless you are completely familiar with its control and features. Inspect all portable power tools before using them. See that they are clean and in good condition with no frayed or cut wires.
Make sure there is plenty of light in the work area. It is important to ensure that your tools are properly grounded. This means that the plug on the tool should have three prongs. Always make sure the tool is in the OFF position before connecting it to a power source.
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In a sensor network, the energy consumed by different functions by a sensor is as follows:
Assume the total number of nodes as P, the number of cluster heads to be m, the number of sensor nodes which send their data to different cluster heads as n, and the frame size to be B bits.
(a) Find the power consumption, during a frame time period if sensing and communication is done during every frame, assuming the other half of the nodes are sleeping at that time.
(b) Find the power consumption in the idle frame when sensing and
communication to the CH is done in every alternate frame. Remember that power is consumed even in the sleeping mode of the cycles, when sensing is not carried out.
(c) Find the total power consumption in different frames if sensing is done every other cycle, while transmission to CH is done every fourth frame.
(d) Repeat part (b) if there are 10 clusters, with each cluster consisting of 8 sensor nodes and aggregation done by CH every 8 frames while CH to base station communication takes place every 16 frames.
What is a measure of a pump’s ability to move liquid through the system?
A. Head B. Total head C. Discharge static head D. Suction static head
An effective method used to remove an old or inferior weld is _____.
a. plasma arc cutting b. brazing c. air-carbon arc cutting d. gas-tungsten arc cutting
The process of _____________________ involves converting complex compounds such as sugar into simpler compounds such as alcohol, acetic acid, and lactic acid
Fill in the blank(s) with correct word