Lab Manual for Smith's Electricity for Refrigeration, Heating, and Air Conditioning, 9th
9th Edition
ISBN: 9781285180014
Author: Russell E. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 20RQ
List at least five electrical safety rules that should be followed by refrigeration, heating, and air-conditioning technicians.
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Students have asked these similar questions
Give three(3 each) specific important safety precautions in handling the following gadgets/devices:
1. heater
2. Air conditioner
3. computer system
True or False
1. It is acceptable to use a hoist to lift something that weighs more than the rating on the hoist when the load is lifted carefully.
2. Typically, combustible material accidents occur at higher temperatures while flammable material accidents occur at room temperature.
3. Water reactive chemicals include calcium carbide, cyclooctene, metal hydrides, and metals like sodium and potassium.
4. When driving material lifting equipment, workers should maintain at least a 5-foot clearance from overhead power lines.
5. Workers should use at least 2 straps placed equally from the center when lifting a long I-beam.
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Multiple Choice
1. Which of the following chemicals is not considered a liver toxin?
A. Glacial acetic acid
B. Carbon Tetrachloride
C. Ethanol
D. Trichloroethylene
2. Which of the following is a safety practice intended to protect workers from a lightning strike?
A. Use a metal…
Question1. If an air conditioning system has three independent zones, how many space thermostats will the system have?
Question 2. A technician is traversing a duct and obtains the following 8 velocity: 500fpm, 400fpm, 375fpm,625fpm,275fpm,360fpm,450fpm,and 575fpm. What is the velocity value that can be used for the system calculations?
Chapter 1 Solutions
Lab Manual for Smith's Electricity for Refrigeration, Heating, and Air Conditioning, 9th
Ch. 1 - True or False: A heating and air-conditioning...Ch. 1 - What is a live electrical circuit?Ch. 1 - Which of the following voltages will a...Ch. 1 - Electrical shock occurs when a person _________....Ch. 1 - What are the important elements of electrical...Ch. 1 - Prob. 6RQCh. 1 - Which of the following is the standard by which...Ch. 1 - Prob. 8RQCh. 1 - What type of ladder should the technician use on...Ch. 1 - What precautions should be taken when you see a...
Ch. 1 - True or False: It is recommended that at least one...Ch. 1 - True or False: The correct fuse size for an...Ch. 1 - What is the difference between a two-prong plug...Ch. 1 - Which prong on a three-prong plug is the ground?...Ch. 1 - True or False: A grounding adapter does no good if...Ch. 1 - An electrical device that will open an electrical...Ch. 1 - True or False: Receptacles used on the job site...Ch. 1 - What precautions should you use when working in an...Ch. 1 - What is the difference between a fuse and a...Ch. 1 - List at least five electrical safety rules that...
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- Which of the following is typically included in a scheduled preventive maintenance program? oil and filter changes coolant and lubrication services replacement of filters all of the abovearrow_forwardWhat should be done in the case of a personal injury emergency?arrow_forwardMake decisions concerning needs and types of ventilation for acceptable indoor air quality?arrow_forward
- Which of the following would not increase the rate of heat transferred from a heater pipe? A. Insulating with materials whose thickness is below that of critical thickness for insulation. B. Blowing air over it C. Providing fins D. Placing the heater pipe within another whose thermal conductivity is smaller in number and 2 inches thickarrow_forwardList at least five precautions that must be adhered to while working on a vehicle with a high-voltage system.arrow_forward3. One precaution that needs to be foliowed in a work area displaying the sign shown above is be cut into 3.2-m-long pieces. How many 3,2-m-long pieces of pipe can be cut from the original A length of copper pipe measures 15.3 m. According to a job's specifications, the pipe needs to wear a leather apron. b. avoid using solvents. wear rubber gloves. d. prohibit welding. a. C. 4. 15.3-m-long copper pipe? a. two b. three C. four d. Five 5. What is strain? a. Determined by dividing the ioad by the smallest actual cross-sectional area e specimen b. The ratio between the original length and the change in length when an external forre applied C. The amount of stress that a material can absorb without exceeding its breaking stress d. A measurement of the deformation produced by the application of an external force ight of eve should be-arrow_forward
- Which of the following is not a true of group lockout or tagout? a. Each employee working on the equipment is an authorized employee b. A supervisor may attach a lock for an entire work crew. c. Each person working on the equipment must have a lock or tag d. A supervisor should be the first or last person to attach a lock or tagarrow_forwardFrom the following identify the true statement relating to the term Preventive maintenance The maintenance done after the failure of machine and can't save energy during the process. O The maintenance done before the failure of machine and can save energy during the process. O The maintenance done before the failure of machine and can't save energy during the process. The maintenance done after the failure of machine and can save energy during the process.arrow_forwardAs a crane contractor, what safety precautions should be followed to avoid accidents?arrow_forward
- Outline the safety procedures of Personal Protective Equipment that an operator/worker needs to comply with according to OSHA requirements during cutting plates/pipes with Oxy-Acetylene process.arrow_forwardCompare the two forms of maintenance.arrow_forwardIdentify the various elements that might be present in a control system involving a thermostatically controlled electric heater.arrow_forward
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General Industrial Safety; Author: Jim Pytel;https://www.youtube.com/watch?v=RXtF_vQRebM;License: Standard youtube license