Two resistances of 30 and 25 ohms are connected in parallel. In series with this combination is a 40 -ohm
resistance, and in parallel with this total combination is a 28-ohm resistance. Given a voltage of 1.28 volts, the
total current flowing through the circuit is _____.
a. 55 milliamps
b. 60 milliamps
c. 70 milliamps
d. 95 milliamps
c
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When a ledger is installed to strengthen a stair assembly, treated lumber must be used if the ledger is _____.
a. less than 2" in thickness b. fastened with lag screws c. in an area of high humidity d. fastened to a concrete floor
Air-insulation dams are installed to protect the insulation from ____.
a.air infiltration b.water vapor c.corrosion d.fire
Mandatory production controls (acreage allotments and quotas):
a. Eliminates slippage. b. Requires import restrictions. c. Provide the initial quota holder a windfall gain. d. Increase the share of income consumers spend on food. e. All of the above.
Explain the role that sound plays when a welder is tuning in a GMAW machine.
What will be an ideal response?