To heat a metal with an open-top preheater, the object to be heated is mounted on a structure above which
kind of burner?
a. Gas
b. Electric
c. Combination oil and compressed air
d. Combination gas and compressed air
a
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The principal parts of an electric motor include the stationary frame, or stator and the revolving part, or ____.
a. commutator b. armature c. rotor d. pole
Determine the purchase quantity of 2 × 6 rafters needed for the roof in Figure 14.67. The slope of the roof is 4:12.
What will be an ideal response?
A ground circuit voltage drop test taken on a vehicle's alternator indicates a 0.965V drop. Technician A says this could cause a problem in the alternator's field current. Technician B says this could affect the output circuit of the alternator. Who is correct?
A. Technician A only B. Technician B only C. Both Technician A and B D. Neither Technician A nor B
What must be done with an A/C system before replacing any system component?
A. vent the refrigerant to atmosphere B. recover all refrigerant to an A/C station C. equalize low side and high side pressures D. ensure there is sufficient refrigerant to recharge the system