Answer the following statement(s) true (T) or false (F)
1. DC motors are generally operated at or above normal speed.
2. DC motors used in industry are never controlled by solid-state controllers.
3. A shunt field power supply converts direct current into alternating current with a rectifier.
4. Shunt field power supplies intended for motors that operate above normal speed must be capable of delivering less than rated voltage.
5. Silicon-controlled rectifiers (SCRs) control voltage by turning on at different times during the
waveform.
1. False
2. False
3. False
4. True
5. True
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____________________ is the result of the combination of resistance and reactance.
Fill in the blank(s) with the appropriate word(s).
Harmonics are produced by linear loads that draw current in a continuous manner.?
Answer the following statement true (T) or false (F)
The gray matter of the spinal cord is dominated by
A) tracts. B) columns. C) meninges. D) cell bodies of neurons and glial cells. E) blood vessels.
____________________ misalignment exists when two shafts are not parallel to each other.
Fill in the blank(s) with the appropriate word(s).