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Which lay of wire rope has the strand wires in line with the rope axis? (Ans- Regular Lay At what speed should the counterweight safeties be set to tr... [Show More]
you are about to loosen a fishplate bolt. which wrench would be least likely to slip? (Ans- a. 6 point box end wrench b. 12 point box end wrench c. o... [Show More]
What material should be used for seating brushes? (Ans- Sandpaper Readings on the meter appear to be inaccurate, what should you do? (Ans- Test mete... [Show More]
Refer to figure, If load resistance R2 is reduced by half, what happens to the zener diode? (Ans- Zener current will decrease Refer to the figure, the... [Show More]
If the ratio of movement between a synchronous selector and the elevator car is 60 to 1, how far will the selector move if the car travels 30 feet? (Ans-... [Show More]
What is the name of the code that is the accepted standard for all electrical wiring in the United States? (Ans- National Electrical Code What is the ... [Show More]
Why are frequent inspections of line starter contractors necessary? (Ans- High current causes contact arcing. During hydraulic pump motor starting which of... [Show More]
The total weight of your elevator (force) is 8100 lbs. and its plunger area is 50 square inches. What is the system pressure? (Ans- 162 psi Refer to t... [Show More]
A 13 ft. I-beam needs to be cut into 4 equal pieces for blocking beams. What should each beam measure? (Unit 305) (Ans- 3.25 ft. The plans for the ... [Show More]
Hydro elevators in low rise applications do not need an _____ _____ room. (Ans- overhead machine Some advantages of hydros are lower equipment and build... [Show More]
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