The coil of a relay takes a current of 0.12 A when it is at the...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
The coil of a relay takes a current of 0.12 A when it is at the room temperature of 15C and connected across a 60-V supply. If the minimum operating current of the relay is 0.1 A, calculate the temperature above which the relay will fail to operate when connected to the same supply. Resistance-temperature coefficient of the coil material is 0.0043 per C at 6C. The coil of a relay takes a current of 0.12 A when it is at the room temperature of 15C and connected across a 60-V supply. If the minimum operating current of the relay is 0.1 A, calculate the temperature above which the relay will fail to operate when connected to the same supply. Resistance-temperature coefficient of the coil material is 0.0043 per C at 6C.
Expert Answer:
Related Book For
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
Posted Date:
Students also viewed these electrical engineering questions
-
The coil of a galvanometer has a resistance of 20.0 , and its meter deflects full scale when a current of 6.20 m A passes through it. To make the galvanometer into a no digital ammeter, a 24.8-m...
-
The coil of a generator has a radius of 0.14 m. When this coil is unwound, the wire from which it is made has a length of 5.7 m. The magnetic field of the generator is 0.20 T, and the coil rotates at...
-
The coil of a certain galvanometer has a resistance of 75.3; its needle shows a full scale deflection when a current of 1.62 mA passes through the coil. (a) Determine the value of the auxiliary...
-
In the accompanying Sales Transactions data, use Excel's filtering capability to extract a. all orders that used Paypal. b. all orders under $100. c. all orders that were over $100 and used a credit...
-
In analyses of the sources of economic growth, a common statistic reported about the U.S. economy is labor productivity. Defined as output per hour of work, labor productivity is a simple measure of...
-
Hillside issues $4,000,000 of 6%, 15-year bonds dated January 1, 2018, that pay interest semiannually on June 30 and December 31. The bonds are issued at a price of $3,456,448. Required 1. Prepare...
-
Jan Samson, CEO at CalleetaCO, sat staring at the now-empty boardroom. Her board of directors had reacted negatively to Jans growth proposals for expanding CalleetaCO globally, leaving Jan with a big...
-
Assume that $200,000 of Baker School District 6% bonds are sold on the bond issue date for $185,788. Interest is payable semiannually, and the bonds mature in 10 years. The purchase price provides a...
-
Consider the following triangular system: where b is a real number. (x+y+z+w = 2 -6x+5w 3z-w 2w = b2 "I -4
-
December 31, 2014, trial balances for Pledge Company and its subsidiary Stom Company follow: Pledge Company purchased 72,000 shares of Stom Company's common stock on January 1, 2011, for $300,000. On...
-
Match the following terms (a-h) with the definitions given below (1-8): A. prejudice about materiality B. inherent risk C. risk of planned detection D. audit assurance E. acceptable audit risk F....
-
The following events took place at Freddie Choo Painting during 2016: a. On 1 January, Freddie bought a van for $30 000. He had a tool chest and side racks for ladders installed for a total cost of...
-
In some countries it is known that payments can be made to local public servants to speed up the approval of permits, licences and other processes. These have been called facilitation payments but...
-
Below is a note from Eastwood Ltd's recent annual report: 1. Summary of significant accounting policies on non-current assets Property and equipment - Property and equipment is recorded at cost and...
-
At the beginning of 2015, Garrison Ltd acquired machinery that cost $100 000, had a useful life of 10 years and zero scrap value. During 2015 and 2016, the company depreciated this machinery using...
-
Below are some independent hypothetical situations. 1. A company pays its shareholders a $90 000 cash dividend. 2. A company borrows $25 000 from the local bank and signs a six-month note for the...
-
The Ops Manager of a small company producing a particular high-precision component is concerned about the variability of the manufacturing process. For a key dimension of the component, the following...
-
6 (a) Briefly develop a mathematical model of the behaviour of a copper-twisted pair cable (b) Derive the magnetic energy from: w given that: K + w, where the - - k symbols have their usual meaning...
-
Calculate the magnitude and direction of the Coulomb force on each of the three charges shown inFigure. -2.00 C 1.50 C 6.00 uC 2.00 cm -3.00 cm
-
Your physics teacher asks you to help her set up a demonstration of Faraday's law for the class. The apparatus consists of a strong permanent magnet that has a field of 0.10 T, a small 10-turn coil...
-
At what angle above the horizon is the Sun if light from it is completely polarized upon reflection from water?
-
You are to open the books of F. Polk, a trader, via the journal to record the assets and liabilities, and are then to record the dialy transactions for the month of May. A trial balance is to be...
-
Show the journal entries necessary to record the following items: 2017 Apr 1 Bought office furniture on credit from Durham Brothers Ltd 1,400. 4 We take goods costing 270 out of the business...
-
You are to show the journal entries necessary to record the following items which occured in 2016: (a) May 1 Bought a motor bike on credit from Lakeside Garage for 5,500. (b) May 3 A debt of 347...
Study smarter with the SolutionInn App