If a pit is dug into the ground, the side of the hole gives a picture of the different layers or _____________________ of soil
Fill in the blank(s) with correct word
horizons
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Inspection of the connections between luminaire conductors and circuit conductors must be possible without ____.
A. having to disconnect any part of the wiring B. current flow C. personnel having to utilize a ladder D. opening attachment plugs
Technician A says that OAT type coolant should be changed every 2 years. Technician B says that IAT type coolant should be changed every 2 years. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
What three factors determine the friction coefficient of a material?
A) Heat, surface area, friction material B) Friction material, surface area, surface finish C) Heat, friction material, surface finish D) Heat, surface area, surface finish
The number of pulses per second from IGBTs is referred to as:
A) Hertz modulation. B) Harmonics. C) Voltage fluctuation. D) Carrier frequency.