An O-ring is referred to as what type of seal packing?
A. mechanical
B. rubber
C. squeeze
D. compression
Answer: C
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Which of these devices can retain a high-voltage charge after power has been removed?
a. Capacitors used in motor circuits b. Control relays c. Compressor contactor d. Compressor terminals
Compression testing is being discussed. Technician A says that the ignition should be disabled. Technician B says that the fuel system should be disabled. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
If a contractor saves 35.5 hours of a mason's time and a laborer's time each, and the mason earns $22.50 an hour and the laborer earns $13.70 an hour, what is the dollar amount of savings to the contractor?
What will be an ideal response?
A delta-delta transformer has a primary voltage of 7200 V and a secondary voltage of 360 V. What is the turns ratio?
A. 11.55:1 B. 15:11.55 C. 20:1 D. 51:20