Answer the following statement(s) true (T) or false (F)
1. The relation of direction of motion of the wire in a field to direction of induced emf can be determined by Fleming’s right-hand rule.
2. An alternate way of stating Lenz’s law is that an induced voltage or current opposes a change of magnetic field.
3. When mechanical energy must be expended to rotate a coil within a magnetic field and cut the lines of flux, this energy is provided by engines called flux movers.
4. Not all generators are designed to maintain coils within a magnetic field but, instead, hold a magnet within a rotating coil.
5. The induction process in rotating machines produces AC, and if direct current (DC) is needed, it can be obtained from AC by using rectifiers.
1. False
2. True
3. False
4. False
5. True
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