What is the least common type of polyphase system and what is it used for?
What will be an ideal response?
The least common type of polyphase system is two phase. It is used to power rectification.
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Manual control may be accomplished by simply connecting a switch in series with the motor.
Answer the following statement true (T) or false (F)
Provide three factors required for seed germination to occur. After these requirements are met, what are the three phases of seed germination?
What will be an ideal response?
A refrigerant's enthalpy is:
A) An index of environmental compatibility. B) Mathematically derived from the refrigerant's pressure and temperature. C) The total amount of heat in the refrigerant. D) A purely theoretical concept which has never been demonstrated.
Inching control requires the use of ____ contactor, because the power supplied to the motor must be different from full line voltage.
A. a plastic B. one C. a jogging D. a separate