Materials Science and Engineering: An Introduction, 10e WileyPLUS + Abridged Loose-leaf
10th Edition
ISBN: 9781119472070
Author: William D. Callister Jr., David G. Rethwisch
Publisher: Wiley (WileyPLUS Products)
expand_more
expand_more
format_list_bulleted
Question
Chapter 10, Problem 34QAP
To determine
To explain:
Why the hardness of tempered martensite diminishes with tempering time and with increasing temperature?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Fill in the chart and answer questions
Answer problems 10, 11, and 12 using the following information:An addition is being planned to a school building. You have been asked to determine theload that will be added to the panelboard that will serve this addition.The addition will be a building 80 ft 3 50 ft. It will consist of four classrooms, every40 ft 3 20 ft and a corridor that is 10-ft wide
The following loads will be installed:Each classroom:12 fluorescent luminaires, 2 ft 3 4 ft @ 85 VA each20 duplex receptaclesAC unit, 208-volt, 1-phase @ 5000 VACorridor:5 fluorescent luminaires, 1 ft 3 8 ft @ 85 VA each8 duplex receptaclesExterior:4 wall-mounted luminaires @ 125 VA each4 duplex receptacles
10. The calculated load is__________ VA.11. The connected load is__________ VA.12. The neutral load is_____________ VA.
A 1200-ampere service was installed, consisting of three sets of 600 kcmil THHN/THWN copper conductors per phase. The electrical contractor was careful to cut theconductors the same length. When the utility crew made up the connections at theservice heads, they cut the conductors to different lengths to make their connectionssimpler. The actual lengths of the service-entrance conductors in a given phase ended up being20 ft (6.1 m), 22 ft (6.7 m), and 24 ft (7.3 m). The maximum ampacity of a 600-kcmilTHHN/THWN copper conductor is 420 amperes using the 75°C column of Table310.16. This is more than adequate for the calculated 1200 amperes when three conductors are run in parallel. Determine how the load of 1200 amperes would divide in each of the three paralleledconductors in a phase.
Determine the conductor sizes for a feeder to a panelboard. It is a 120/240-volt,single-phase system. The OCPD has a rating of 100 amperes. The calculated load is15,600 VA. All the loads are 120 volts.
Chapter 10 Solutions
Materials Science and Engineering: An Introduction, 10e WileyPLUS + Abridged Loose-leaf
Ch. 10 - Prob. 1QAPCh. 10 - Prob. 2QAPCh. 10 - Prob. 3QAPCh. 10 - Prob. 4QAPCh. 10 - Prob. 5QAPCh. 10 - Prob. 6QAPCh. 10 - Prob. 7QAPCh. 10 - Prob. 8QAPCh. 10 - Prob. 9QAPCh. 10 - Prob. 10QAP
Ch. 10 - Prob. 11QAPCh. 10 - Prob. 12QAPCh. 10 - Prob. 13QAPCh. 10 - Prob. 14QAPCh. 10 - Prob. 15QAPCh. 10 - Prob. 16QAPCh. 10 - Prob. 17QAPCh. 10 - Prob. 18QAPCh. 10 - Prob. 19QAPCh. 10 - Prob. 20QAPCh. 10 - Prob. 21QAPCh. 10 - Prob. 22QAPCh. 10 - Prob. 23QAPCh. 10 - Prob. 24QAPCh. 10 - Prob. 25QAPCh. 10 - Prob. 26QAPCh. 10 - Prob. 27QAPCh. 10 - Prob. 28QAPCh. 10 - Prob. 29QAPCh. 10 - Prob. 30QAPCh. 10 - Prob. 31QAPCh. 10 - Prob. 32QAPCh. 10 - Prob. 33QAPCh. 10 - Prob. 34QAPCh. 10 - Prob. 35QAPCh. 10 - Prob. 36QAPCh. 10 - Prob. 38QAPCh. 10 - Prob. 1DPCh. 10 - Prob. 2DPCh. 10 - Prob. 4DPCh. 10 - Prob. 5DPCh. 10 - Prob. 6DPCh. 10 - Prob. 7DPCh. 10 - Prob. 8DPCh. 10 - Prob. 9DPCh. 10 - Prob. 10DPCh. 10 - Prob. 1FEQPCh. 10 - Prob. 2FEQPCh. 10 - Prob. 3FEQP
Knowledge Booster
Similar questions
- summarize in a short paragraph how to Advance Incident Response and Automation in ML home based security systemsarrow_forwardThe following problem concerns dynamic storage allocation. Consider an allocator that uses an implicit free list. The layout of each allocated and free memory block is as follows: 31 2 1 0 Header Block Size (bytes) I | Footer Block Size (bytes) Each memory block, either allocated or free, has a size that is a multiple of eight bytes. Thus, only the 29 higher order bits in the header and footer are needed to record block size, which includes the header and footer. The usage of the remaining 3 lower order bits is as follows: ⚫ bit 0 indicates the use of the current block: 1 for allocated, O for free. ⚫ bit 1 indicates the use of the previous adjacent block: 1 for allocated, O for free. ⚫ bit 2 is unused and is always set to be 0.arrow_forwardCPP41419 - Certificate IV in Real Estate Practice (1)arrow_forward
- Given the contents of the heap shown on the left, show the new contents of the heap (in the right table) after a call to free(0x400b010) is executed. Your answers should be given as hex values. Note that the address grows from bottom up. Assume that the allocator uses immediate coalescing, that is, adjacent free blocks are merged immediately each time a block is freed. Address 0x400b028 0x00000012 Address 0x400b028 0x400b024 0x400b611c 0x400b024 0x400b611c 0x400b020 0x400b512c 0x400b020 0x400b512c 0x400b01c 0x00000012 0x400b01c 0x400b018 0x00000013 0x400b018 0x400b014 0x400b511c 0x400b014 0x400b511c 0x400b010 0x400b601c 0x400b010 0x400b601c 0x400b00c 0x00000013 0x400b00c 0x400b008 0x00000013 0x400b008 0x400b004 0x400b601c 0x400b004 0x400b601c 0x400b000 0x400b511c 0x400b000 0x400b511c 0x400affc 0x00000013 0x400affcarrow_forwardCalculate the neutral current in a 120/240-volt, single-phase system when the current inphase A is 20 amperes and the current in phase B is 40 amperes. The load is resistive. Calculate the neutral current in a 208Y/120-volt, 3-phase, 4-wire system when thecurrent in phase A is 0, in phase B is 40, and in phase C is 60 amperes. The load isresistivearrow_forwardYour programming buddy notices that your code has some race conditions, and draws up the following locking mechanism: int locked = 0; void lock() { while (locked == 1) { } continue; // keep looping locked = 1; void unlock() { } locked = 0; Because the load-increment-store sequence is the critical section of your program, you place a call to lock() immediately before the i++ line, and a call to unlock() immediately after. However, running your supposedly-now-threadsafe program again, you discover that the output is still nondeterministic. Turns out your buddy's clever locking scheme doesn't do a very good job protecting the critical section after all. (Note: unlike semaphore locking and unlocking functions, lock() and unlock() DO NOT execute atomically.) C. Give an execution sequence of two threads in the lock() function that would end up with both threads holding the lock at the same time.arrow_forward
- Calculate the neutral current in a 208Y/120-volt, 3-phase, 4-wire system when the current in phase A is 20, in phase B is 40, and in phase C is 60 amperes. The load is resistive.arrow_forwardI need expert to solve this,if you don't know don't attempt,also show the signal flow diagramarrow_forwardSuppose we alter do stuff to look as follows: void *do_stuff(void *arg attribute ((unused))) { int a; for (a = 0; a < 1000; a++) i++; return NULL; } Because the code is not optimized, there will be one load-increment-store sequence per iteration of the loop. B. For each number, tell whether or not our program could output it, and briefly explain why or why not. • 2000 • 1500 . 2 1arrow_forward
- The following problem concerns the way virtual addresses are translated into physical addresses. Thememory is byte addressable. • Memory accesses are to 1-byte words (not 4-byte words). • Virtual addresses are 16 bits wide. • Physical addresses are 13 bits wide. •The page size is 512 bytes. • The TLB is 8-way set associative with 16 total entries. • The cache is 2-way set associative, with a 4 byte line size and 16 total lines. In the following tables, all numbers are given in hexadecimal. The contents of the TLB, the page table for the first 32 pages, and the cache are as follows: TLB Page Table 2-way Set Associative Cache Index Tag PPN Valid VPN PPN Valid VPN PPN Valid Index Tag Valid Byte 0 Byte 1 Byte 2 Byte 3 Tag Valid Byte 0 Byte 1 Byte 2 Byte 3 0 09 4 1 00 6 1 10 0 1 0 19 1 99 11 23 11 00 0 99 11 23 11 12 2 1 01 5 0 11 5 0 1 15 0 4F 22 EC 11 2F 1 55 59 OB 41 10 0 1 02 3 1 12 2 1 2 1B 1 00 02 04 08 OB 1 01 03 05 07 08 5 03 4 1 13 4 0 3 06 0 84 06 B2 9C 12 0 84 06 B2 9C 05 7 1 04…arrow_forwardPart II (8 points) int counter = 0; void handler(int sig) { counter++; } int main() { int i; signal(SIGCHLD, handler); for (i = 0; i < 5; i ++){ if (fork() == 0){ } } exit(0); /* wait for all children to die */ while (wait(NULL) != -1); printf("counter = %d\n", counter); return 0; } A. Does the program output the same value of counter every time we run it? Yes No B. If the answer to A is Yes, indicate the value of the counter variable. Otherwise, list all possible values of the counter variable. Answer: counter =arrow_forwardA useful helper function for opening a socket connection to a server was introduced in the course: int open_clientfd(char *hostname, int port) { int clientfd; struct hostent *hp; struct sockaddr_in serveraddr; if ((clientfd = socket(AF_INET, SOCK_STREAM, 0)) h_addr_list[0], (char *)&serveraddr.sin_addr.s_addr, hp->h_length); serveraddr.sin_port = htons(port); /* Establish a connection with the server */ if (connect(clientfd, (SA *) &serveraddr, sizeof(serveraddr)) < 0) return -1; return clientfd; } The problem with this function is that it is not thread safe: it uses function gethostbyname, which returns a pointer to a static variable. On the following page, reimplement open_clientfd in a thread safe way using the lock-and-copy technique. (Note 1: that the new function will take an additional input: a semaphore that will control access to the critical section so only one thread at a time can call gethostbyname and read the result stored in a static variable. Note 2: a call to malloc is…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
MATLAB: An Introduction with ApplicationsEngineeringISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Essentials Of Materials Science And EngineeringEngineeringISBN:9781337385497Author:WRIGHT, Wendelin J.Publisher:Cengage,
Industrial Motor ControlEngineeringISBN:9781133691808Author:Stephen HermanPublisher:Cengage Learning
Basics Of Engineering EconomyEngineeringISBN:9780073376356Author:Leland Blank, Anthony TarquinPublisher:MCGRAW-HILL HIGHER EDUCATION
Structural Steel Design (6th Edition)EngineeringISBN:9780134589657Author:Jack C. McCormac, Stephen F. CsernakPublisher:PEARSON
Fundamentals of Materials Science and Engineering...EngineeringISBN:9781119175483Author:William D. Callister Jr., David G. RethwischPublisher:WILEY
MATLAB: An Introduction with Applications
Engineering
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Essentials Of Materials Science And Engineering
Engineering
ISBN:9781337385497
Author:WRIGHT, Wendelin J.
Publisher:Cengage,
Industrial Motor Control
Engineering
ISBN:9781133691808
Author:Stephen Herman
Publisher:Cengage Learning
Basics Of Engineering Economy
Engineering
ISBN:9780073376356
Author:Leland Blank, Anthony Tarquin
Publisher:MCGRAW-HILL HIGHER EDUCATION
Structural Steel Design (6th Edition)
Engineering
ISBN:9780134589657
Author:Jack C. McCormac, Stephen F. Csernak
Publisher:PEARSON
Fundamentals of Materials Science and Engineering...
Engineering
ISBN:9781119175483
Author:William D. Callister Jr., David G. Rethwisch
Publisher:WILEY