Annual plants live for _____ growing season(s)
A) 1
B) 2
C) 3
D) many
A
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Which plastid structures manufacturer pigments that give fruit their color?
a. Lysosomes c. Mitochondria b. Vacuoles d. Chromoplasts
Who administrates Right to Know legislation?
A. EPA B. MSDS C. ANSI D. OSHA
Answer the following statement(s) true (T) or false (F)
1. The synchronous motor can be implemented to correct or improve the power factor of three-phase industrial circuits, thereby reducing operating costs. 2. A squirrel-cage, or amortisseur, winding is provided for starting because the synchronous motor is not self-starting without this feature. 3. A synchronous motor must always be started as a three-phase AC induction motor with the DC field excitation connected. 4. With normal full-field excitation of a synchronous motor, the power factor has a peak value of unity, or 100%, and the AC stator current is at its highest value. 5. When starting synchronous motors of larger sizes through a starting compensator or an automatic starter, the voltage applied to the motor terminals at the instant of start is about half the value of the rated line voltage, and the starting surge of current is limited.
What procedure is used when heating a brazed copper joint?
A) Heat the pipe first and then the fitting. B) Concentrate the flame on the line where the pipe slips into the fitting. C) Use a fanning motion to heat the fitting evenly and slowly. D) Heat the fitting first and then heat the pipe after the fitting is hot.