Bundle: Refrigeration And Air Conditioning Technology, 8th + Lab Manual + Lms Integrated For Mindtap Hvac-r, 4 Terms (24 Months) Printed Access Card
8th Edition
ISBN: 9781337087315
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Question
Chapter 19, Problem 1RQ
To determine
The recommended repair for a defective relay.
Expert Solution & Answer
Answer to Problem 1RQ
The recommended repair for a defective relay is to replace it.
Explanation of Solution
The relay is a switching device and it works to isolate or change the state of an electric circuit from one state to another state. The classification of the relay is based on its function. The some types of relay are listed below.
- Monitoring relay.
- Protective relay.
- Auxiliary relay.
- Regulating relay.
- Reclosing relay.
These different types of relays have different application in different types of fields such as motor control, electrical fuel pump, in controlling large power loads and high voltage. The most important advantage of the relay is that it takes a relatively small amount of power to operate the relay coil. It can be also used to control the motors, lamps, or heaters.
The relay is manufactured by the magnetic coil which is considered to be a throw away device. Due to the parts in the relay, it is not available for the rebuilding or repairing it. Therefore, the recommended repair for the defective relay is to replace it.
Conclusion:
The recommended repair for a defective relay is to replace it.
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2 A metal block of mass m = 10 kg is sliding along a frictionless surface with an initial speed
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FEB = kx²,
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Q1: Determine the length, angle of contact, and width of a 9.75 mm thick
leather belt required to transmit 15 kW from a motor running at 900 r.p.m. The
diameter of the driving pulley of the motor is 300 mm. The driven pulley runs at
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Chapter 19 Solutions
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