Alternating current frequency is measured in:
A) Bandwidth (BW). B) Power Width Modulations (PWM).
C) Gigabytes (GB). D) Hertz (Hz).
D
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When normal surfaces are parallel to the front view, they are referred to as ____________________ surfaces.
Fill in the blank(s) with the appropriate word(s).
Which of the following boiler types would likely have need for the thickest insulation?
a. Hydronic heating boiler (15 psig / 200 kPa) b. Hospital boiler (150 psig / 1.1 MPa) c. Feed moisturizer boiler (200 psig / 1.5 MPa) d. Utility boiler (900 psig / 6.3 MPa)
Technician A says that tie rod ends are used to connect the steering linkage to the steering knuckles. Technician B says that some ball and socket joints are sealed and do not require lubrication. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
If the starter "whines" when engaged, which of these is a possible cause?
A) Worn leather armature brake B) Open pull-in winding C) Worn or defective starter drive D) Defective solenoid