Electricity for Refrigeration, Heating, and Air Conditioning
9th Edition
ISBN: 9781285179988
Author: Russell E. Smith
Publisher: Cengage Learning
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Chapter 5, Problem 1RQ
What are the three types of electrical diagrams used in the heating, cooling, and refrigeration industry?
Expert Solution & Answer
To determine
The three types of electrical diagrams used in heating, cooling, and refrigeration industry.
Explanation of Solution
The three types of electrical diagrams used in heating, cooling and refrigeration industry are as follows:
- 1. Schematic diagrams: Schematic diagrams are the diagrams having symbols of electrical components and lines to represent wiring and these are also known as circuit diagrams. They represent the connection of the electrical objects in a circuit that helps to find an error in a circuit so that it can be rectify before manufacturing it.
- 2. Pictorial diagrams: Pictorial diagrams are also similar to schematic diagrams. They differ by the presentation of electrical objects in the circuit. In pictorial diagrams, the electrical objects are represented by the actual picture of the electrical objects. These diagrams are easy to understand because of the picture presentation of objects.
- 3. Installation diagrams: Installation diagrams are also called as wire diagrams. The wires are represented by the different colors and sizes so that the installer easily understands the connections. These diagrams also give the information about the arrangement of the devices and their relative positions.
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Q1: Determine the length, angle of contact, and width of a 9.75 mm thick
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5. A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a pair of spur gears having
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Chapter 5 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning
Ch. 5 - What are the three types of electrical diagrams...Ch. 5 - A load is an electrical device that __________. a....Ch. 5 - What is the major load of an air-conditioning...Ch. 5 - Identify the following symbols for loads:Ch. 5 - Prob. 5RQCh. 5 - What do the terms normally open and normally...Ch. 5 - What is the difference between a magnetic starter...Ch. 5 - Prob. 8RQCh. 5 - Draw a heating and a cooling thermostat and...Ch. 5 - A three-pole contactor would allow how many paths...
Ch. 5 - A disconnect switch is used to __________. a. open...Ch. 5 - What determines whether a pressure switch opens or...Ch. 5 - Identify the following symbols for...Ch. 5 - What is the difference between a thermal overload...Ch. 5 - What is the purpose of a transformer? Draw the...Ch. 5 - Which of the following is not a requirement for an...Ch. 5 - What is the purpose of a legend on a schematic...Ch. 5 - A factual diagram is _____. a. a pictorial diagram...Ch. 5 - Identify the following symbols for safety devices.Ch. 5 - Prob. 20RQCh. 5 - True or False: The schematic diagram tells service...Ch. 5 - What is the difference between a pilot duty and a...Ch. 5 - What type of switch would be used to open or close...Ch. 5 - What is the purpose of a fuse in an electrical...Ch. 5 - True or False: A solenoid valve is a device that...Ch. 5 - What is a signal light used for in a control...Ch. 5 - Change the following normally open elements from...Ch. 5 - Draw the symbols for the following electrical...Ch. 5 - Add letter designations to the symbols to indicate...Ch. 5 - Draw a symbol for a magnetic starter.
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