When selecting heater elements for the overload relays, the electrician should remember that each of the relays carries only ____ of the motor current.
a. a fifth
b. a quarter
c. a third
d. half
d. half
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Why should the control joints in a concrete slab-on-ground be provided as soon as possible?
What will be an ideal response?
____ bearings are the most popular because they provide the greatest amount of friction reduction and can handle axial and radial loads.
A. Tapered B. Ball C. Needle D. Roller
Technician A says that volumetric efficiency is a comparison of the actual volume of air-fuel mixture drawn into the engine to the theoretical minimum volume that can be drawn into the cylinder. Technician B says that a supercharger consumes some engine power as it forces a greater amount of air into the cylinders for more power. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
What is the usual cause of a bowed upper coupler bolster plate?
A. high hitch coupling B. overloading C. aggressive tractor coupling D. not setting landing gear height before coupling