Why are most plastics actually beneficial in a landfill?
What will be an ideal response?
The plastics are inert and therefore stable. They do not degrade and cannot, therefore, cause pollution of ground waters.
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In a cellular system, a cluster of 7-cell, is assigned 48 traffic channels. Show the assignment of channels to each cell if
(a) Omni-directional antennas are used. (b) 3-sector directional antennas are used. (c) 6-sector directional antennas are used.
What is used to help keep the passenger compartment warm during idle -stop (start-stop) operation?
A) Operating the A/C in reverse to provide heating instead of cooling B) A larger than normal heater core C) An auxiliary electric water pump D) Larger than usual water jackets in the ICE
Some alternators are cooled by engine coolant
Indicate whether the statement is true or false
In the circuit of Fig. 13.93,
(a) find the coupling coefficient,
(b) calculate vo,
(c) determine the energy stored in the coupled inductors at t = 2 s.
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