Every year, animals produce more offspring than is necessary to continue the species, this is called the _____
a. hunting limit
b. biological surplus
c. overpopulation
d. disease barrier
d
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While performing steel-erection work, it is best to wear _____.
a. shirts with open pockets for easy access b. short-sleeve shirts to keep your arms free c. long-sleeved shirts d. an unbuttoned shirt over a t-shirt
A 280 in^3 engine has 85% volumetric efficiency at its redline speed of 6500 RPM. What is the maximum airflow to the engine? Round to the nearest whole number
What will be an ideal response?
The most common type of single phase motor used in HVACR equipment is:
A) Repulsion start Induction run (RSIR). B) Series wound Universal DC motors. C) Permanent split capacitor (PSC). D) Capacitor start induction run.
Which statements are true about sinusoidal waveforms?
A) A sinusoidal waveform has no fundamental frequency B) Sinusoidal waveforms do not repeat C) A sinusoidal waveform does not contain harmonics D) They are a composite of fundamental and harmonic frequencies