A power shears is used to cut soft cold-rolled steel that is 6.85 mm thick. At what clearanceshould the shears be set to yield an optimum cut?TABLE 20.1 Clearance allowance value for three sheet-metal groups.Metal GroupA.0.0450.0601100S and 5052S aluminum alloys, all tempers2024ST and 6061STaluminum aloys; brass all tempers; soft cold-rolled steel, soft stainless steelCold-rolled steel, half hard; stainless steel, half-hard and full-hard0.075Select one:a. 0.325 mmb. 0.411 mmc. 0.285 mmd. 0.521 Fill in the blanks:A tensile test is carried out to determine the strength constant C and strain-rate sensitivityexponent m for a certain metal at 1000°F. If temperature were decreased to 900°F, the strengthconstant C would . .and the strain- rate sensitivity exponent m would. .Select one:a. C would stay constant, m would Decreaseb. Nothing would changec. C would Increase, m would Decreased. C would Increase, m would stay constante. C would Decrease, m would Increase

Given Data Thickness (t)= 6.85mm For soft cold rolled steel, clearance allowance=0.60 (from the…

A power shears is used to cut soft cold-rolled steel that is 6.85 mm thick. At what clearance should the shears be set to yield an optimum cut? TABLE 20.1 Clearance allowance value for three sheet-metal groups. Metal Group 1100S and 5052S aluminum alloys, all tempers 2024ST and 6061ST aluminum alloys; brass, all tempers; soft cold- rolled steel, soft stainless steel Cold-rolled steel, half hard; stainless steel, half-hard and full-hard 0.045 0.060 0.075 Select one: a. 0.325 mm b. 0.411 mm c. 0.285 mm d. 0.521

A power shears is used to cut soft cold-rolled steel that is 6.85 mm thick. At what clearance should the shears be set to yield an optimum cut? TABLE 20.1 Clearance allowance value for three sheet-metal groups. Metal Group 1100S and 5052S aluminum alloys, all tempers 2024ST and 6061ST aluminum alloys; brass, all tempers; soft cold- rolled steel, soft stainless steel Cold-rolled steel, half hard; stainless steel, half-hard and full-hard 0.045 0.060 0.075 Select one: a. 0.325 mm b. 0.411 mm c. 0.285 mm d. 0.521

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

A power shears is used to cut soft cold-rolled steel that is 6.85 mm thick. At what clearance
should the shears be set to yield an optimum cut?
TABLE 20.1 Clearance allowance value for three sheet-metal groups.
Metal Group
A.
0.045
0.060
1100S and 5052S aluminum alloys, all tempers
2024ST and 6061STaluminum aloys; brass all tempers; soft cold-
rolled steel, soft stainless steel
Cold-rolled steel, half hard; stainless steel, half-hard and full-hard
0.075
Select one:
a. 0.325 mm
b. 0.411 mm
c. 0.285 mm
d. 0.521

Fill in the blanks:
A tensile test is carried out to determine the strength constant C and strain-rate sensitivity
exponent m for a certain metal at 1000°F. If temperature were decreased to 900°F, the strength
constant C would . .and the strain- rate sensitivity exponent m would. .
Select one:
a. C would stay constant, m would Decrease
b. Nothing would change
c. C would Increase, m would Decrease
d. C would Increase, m would stay constant
e. C would Decrease, m would Increase

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