____ are the most common organism in the profundal zone
A) Insects
B) Salmon
C) Bacteria
D) Birds
C
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The opposing force that an inductor presents to the flow of alternating current is called _____.
a. inductive reactance b. inductive resistance c. resistance d. anti-current
Answer the following statement(s) true (T) or false (F)
1. Standard motor efficiency is calculated by the simple formula of watts output of the motor divided by watts input. 2. To reduce losses due to eddy currents in the motor, high-grade steel with a higher silicon content is used to reduce the friction of the magnetic materials and therefore reduce the heat produced in changing the magnetic fields of the motor iron. 3. I2R losses can be reduced by decreasing the wire size in the stator winding. 4. A high-efficiency motor is designed to run at 94.1% efficiency at full load. 5. Power factor typically improves with the hp rating of the motor and tends to peak about 75% to 100% of full load.
To resist corrosion, the recuperative cell on a condensing oil furnace is made of
A) High quality stainless steel B) Heavy galvanized steel C) Aluminized steel D) Teflon coated steel
Mixed format: (with a space between the whole number and the numerator)Fraction format:
Reduce all fractions. A piece of carbon
inch thick has a copper plating of
inch on each side. What is the total thickness?
Fill in the blank(s) with the appropriate word(s).