Welding in vertical and overhead positions should not be attempted with SMAW electrodes larger then 3/16? in
diameter unless the electrode is classified as _____.
a. low-hydrogen (F4)
b. fast-freeze (F3)
c. fill-freeze (F2)
d. fast-fill (F1)
a
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What are the three main circuit characteristics commonly measured to troubleshoot electrical circuits?
A) Frequency, current, and impedance B) Volts, watts, and impedance C) Capacitance, inductance, and resistance D) Voltage, current, and resistance
A ________ is used to tell the brake actuator how fast and how far the driver applied the brake pedal.
A. master cylinder B. fulcrum C. lever D. stroke sensor
Maximum transfer of voltage from a source to a load occurs when
A) at minimum load B) the load and source resistance are equal C) the load resistance is much smaller than the source resistance D) the load resistance is much larger than the source resistance
Before starting the unit:
A) Purge the system with nitrogen. B) Check the low- and high-side pressures. C) Check the power supply with the unit off. D) Remove the refrigerant.