Which of these devices can retain a high-voltage charge after power has been removed?
a. Capacitors used in motor circuits
b. Control relays
c. Compressor contactor
d. Compressor terminals
a. Capacitors used in motor circuits
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While working with caustic chemicals the technician should
A. Always wear approved rubber gloves. B. Always wear eye protection that is equal to the protection provided by regular eye glasses. C. Always wear hearing protection. D. Both A and B
One of the three factors that will cause a three-phase motor’s magnetic field to rotate is that the _____.
a. voltages of a three-phase electrical system are 180° out of phase with each other b. stator windings around the inside of the motor are arranged in a specific manner to induce rotation c. stators have dual-voltage d. three voltages maintain constant polarity
A luminaire is _____.
A. a complete lighting unit B. a method of lighting C. the power source for a lighting unit D. the lamp portion of a lighting unit
The surface of the postcentral gyrus contains the
A) primary sensory cortex. B) primary motor cortex. C) visual cortex. D) olfactory cortex. E) auditory cortex.