Some older cars, a simple thermal relay flasher is used to control flashing lights. When a anver wishes to turn left, he pushes a lever behind the steering wheel. This causes the buib in the turning signal to blink. The simple thermal relay flasher uses a bimetallic strip. The strip repeatedly interrupts the low of an electric current. The diagram below shows a simplified flasher circuit. bimetallic strip brass Switch heating coil Metal X Metal Y e er aporulA() plare Steel nswong insulating material To bserant anula 2sw1stew bluow JenW (d) (a) The bimetallic strip acts as a switch in the thermal relay flasher. It switches off when electric current passes through the strip. Which metal strip, X or Y, expands more quickly? Explain your answer. loinon o Metal Y expands more quickiy as noc (b) A manufacturer of the thermal relay decides to replace Metal X with brass and Metal Y with steel. However, the thermal relay is found not to be working. Why is this so? What should be done to correct the fault? (Hint: Brass expands more than steel.)
Some older cars, a simple thermal relay flasher is used to control flashing lights. When a anver wishes to turn left, he pushes a lever behind the steering wheel. This causes the buib in the turning signal to blink. The simple thermal relay flasher uses a bimetallic strip. The strip repeatedly interrupts the low of an electric current. The diagram below shows a simplified flasher circuit. bimetallic strip brass Switch heating coil Metal X Metal Y e er aporulA() plare Steel nswong insulating material To bserant anula 2sw1stew bluow JenW (d) (a) The bimetallic strip acts as a switch in the thermal relay flasher. It switches off when electric current passes through the strip. Which metal strip, X or Y, expands more quickly? Explain your answer. loinon o Metal Y expands more quickiy as noc (b) A manufacturer of the thermal relay decides to replace Metal X with brass and Metal Y with steel. However, the thermal relay is found not to be working. Why is this so? What should be done to correct the fault? (Hint: Brass expands more than steel.)
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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how to do part a and b? thank you!
Transcribed Image Text:Some older cars, a simple thermal relay flasher is used to control flashing lights. When a
anver wishes to turn left, he pushes a lever behind the steering wheel. This causes the bulb
in the turning signal to blink.
The simple thermal relay flasher uses a bimetallic strip. The strip repeatedly interrupts the
now of an electric current. The diagram below shows a simplified flasher circuit.
bimetallic strip brass
Switch
heating coil
Metal X
Metal Y
ing
onwon
Steei
insulating material
To bsotentnelev
bluow jerW (d)
(a) The bimetallic strip acts as a switch in the thermal relay flasher. It switches off when
electric current passes through the strip. Which metal strip, X or Y, expands more quickly?
Explain your answer.
lounoo o Metal Y expands more quickiy as
(b) A manufacturer of the thermal relay decides to replace Metal X with brass and Metal Y
with steel. However, the thermal relay is found not to be working. Why is this so? What
should be done to correct the fault? (Hint: Brass expands more than steel.)
cooled o b aud
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