An instrument called a clamp-on ammeter is so called because the tongs can be clamped around a single wire.
Answer the following statement true (T) or false (F)
True
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Answer the following statement(s) true (T) or false (F)
1. There is one basic function of synchronous motor control in starting.
2. The principal difference between synchronous motor control and induction motor control is in the control of the field.
3. In the accompanying figure, when the stator is energized, the rotor circuit must be open at all times.
4. In the accompanying figure, the normally open contacts M in the F coil circuit prevent the DC field from being
energized before the motor is started.
5. In the accompanying figure, the ammeter and rheostat control the excitation current.
Answer the following statement(s) true (T) or false (F)
1. A grounded conductor is a system or circuit conductor that is intentionally grounded. 2. The conductors between the inverter and the batteries in a stand-alone system, or the conductors between the inverter and the photovoltaic output circuit in a grid-tie system, are referred to as the inverter output circuit. 3. If conductors are installed in conduit located outside of a building or underground in a trench, you need to use 90° C, wet rated conductors. 4. Conductor ampacity must be derated for high ambient temperatures when the ambient temperature around the conductor is higher than the base temperature rating of 30° C (86° F). 5. Every circuit must be protected from an electrical current that exceeds the conductor’s voltage.
The Solar Pathfinder TM and the Solmetric SunEye TM are examples of solar site ____________________ devices.
Fill in the blank(s) with the appropriate word(s).
Profile tolerances are always equally disposed bilateral unless otherwise specified.
Answer the following statement true (T) or false (F)