The most popular surface-mounted lift style is a two-post, drive-through, frame-engaging type. It has two lifting carriages, each one supporting two swing arms. Which of the following is LEAST-Likely to be used to keep the two carriages moving together?
A. Hydraulic circuits
B. Bearings
C. Steel chain
D. Cables
Answer: B
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A) Increases air flow across the radiator B) Rust inhibitor C) Cooling system lubricant D) Corrosion inhibitor
The primary advantage of mechanical fittings over heat-bonded joints is that they _____
a. are much stronger b. are less likely to leak c. can be used on smaller sizes of tubing d. can be taken apart and reassembled more easily
The primary winding of a transformer has 100 turns, and the secondary has 400 turns. An EMF of 120 volts is applied to the primary. What is the voltage at the secondary?
What will be an ideal response?
When exposed to intense heat, a lightweight metal truss can:
A. maintain its structural integrity B. often contain a fire to a specific area C. be expected to fail in 5 to 10 minutes D. be expected to support firefighting operations for at least 20 minutes