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Sheet Metal Ex9 Flashcards

1
Q

90° bend, .064 inch thick, 2024 – T3
A.192–320
B 384–512
C 576–640

A

A 192–320

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2
Q

Which of the following would require most material for a 90° band?
A 2024
B 5052
C.7075

A

C.7075

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3
Q

Which of the following would require the most material for a 90° bend
A.2024
b. 5052.
C.7075

A

C.7075

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4
Q

Which of the following would require the most material for a 90° bend
A two bands of 2024
B one bend of 5052
C one bend of 7075

A

C one band of 7075

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5
Q

Which of the following would require the most material for a 90° bend
A one bend of 2024
B, two bands of 5052
C one band of 7075

A

B two bends of 5052

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6
Q

L bracket, 90° band, .064 thick, 2024 – T6
A 192
B 355
C 224

A

B 355

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7
Q

Bend allowance 90°, .032 thick, 1/4 inch radius
A 216
B 415
C 366

A

B 415

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8
Q

Bend allowance 90°, .040 thick, 5–32 inch radius
A 279
B 273
C 372

A

B 273

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9
Q

Ben allowance per degree, .040 thick, 5/16 inch radius
A 520
B .003034
C.005774

A

C.005774

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10
Q

135° open angle, bend. How many degrees bent?
A 90
B 45
C 35

A

B 45
180 - 135 =45

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11
Q

45° closed angle bend. How many degrees has it been bent?
A 90
B 135
C155

A

B 135
180-45 = 135

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12
Q

To form a closed angle bend, the metal would have to be bent
A greater than 90
B less than 90
C 90

A

A greater than 90

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13
Q

To form an open angle bend, the metal would have to be bent
A 90° or less
B less than 90
C greater than 90

A

B less than 90°

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14
Q

When forming a band with a flat sheet of metal stock, and open angle
A is 90° or less
B requires less degrees of bending than a 90° band
C requires more degrees of bending than 90° band

A

B requires less degrees of bending the 90° bend

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15
Q

The setback for a 90° bend, 2024 – T3, .032 thickness would be
A more setback than 45° closed angle
B less setback than 135° open angle
C less setback/toosmall than a 45° closed angle

A

C.less setback/2 small than a 45° closed angle

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16
Q

When bending metal from a flat sheet of metal stock, the degrees in the middle is actually bent is called
A the angle of the bend
B the bend angle
C the obtuse angle

A

B.the bend angle

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17
Q

How would you determine the location of the site line when bending metal?
A first bend tangent line plus the radius
B first Ben tangent line plus the mold line
C radius, plus the thickness

A

A first band tangent line plus the radius

SL equals BTL plus radius

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18
Q

When bending metal, the location of the site line would be the Bend tangent line plus
A the mold line
B the radius
C the thickness of the metal

A

B.the radius

19
Q

A site line drawn on material bent in a cornice brake is the bend radius plus
A bend allowance
B.Bend tangent line
C. Setback measurement.

A

B bend tangent line

20
Q

When making a sheet metal bend with a cornice break, the technician must select and install the correct radius bar. The position at which the radius bar is installed in the Brake is termed as what?
A the mold line
B setback
C.Bend allowance

A

A.the mold line

21
Q

The distance between the jaws of the Brake and the mold line is known as the
A K factor
B.Bend allowance
C.setback

22
Q

Setback could be determined by using which of the following
A industry standard formula
B.industry standard chart
C.both

23
Q

Bend allowance can be determined by using which of the following
A.industry standard formula
B.industry standard chart
C.either a or B

A

C.either a or B

24
Q

To determine the radius of a bend, you must use, which of the following
A industry standard formula
B industry standard chart
C.both a and B

A

B industry standard chart

25
Q

With a larger than minimum bend radius, the setback from the set line
A lessons
B is greater
C does not change

A

B is greater

26
Q

To determine the flat of a sheet metal bin, what would you subtract from the mold line?
A setback
B bend tangent
C bend allowance

27
Q

How would you determine the flat of a sheet metal bend
A mold line plus setback
B.mold line minus setback
C.mold line minus spend allowance

A

B.mold line minus set back

Setback is always subtracted

28
Q

When forming a 90° bend .125 radius, 032 thick, the setback for the horizontal flat would be
A bend radius + material thickness
B. Bend radius.+ material x K factor
C.bend radius minus K factor

A

A.bend radius+ material thickness

29
Q

What is the formula used to determine the necessary setback when forming a 90° bend
A setback equals bend radius + material thickness x K factor
B.setback equals bend radius +material thickness
C.setback equals bend radius minus K factor

A

B. Setback equals bend radius + material thickness

30
Q

Which of the following would be used to determine setback for 135° open angle bend
A bend radius + material thickness
B.bend radius + half the material thickness X the K factor
C.bend radius + material thickness X the K factor

A

C.bend radius + material thickness X the K factor.

31
Q

What is the setback for a sheet of 2024 – T4, 032 thick for a 30° bend angle
A 1203
B 0337
C.2103

32
Q

What is the setback for a sheet of 5052–0, 040 thick with 110° Bend angle
A 1025
B14637
C0500

33
Q

What is the setback with 1/8 inch radius, 032 thick with 145° bend angle
A 250
B 352
C498

34
Q

Under what conditions may a .032 bend radius be used for a 90° bend of 5052 – H 32 with a thickness of .128
A if the metal is a kneeled prior to bending
B radius cannot be used, it is too small
C radius cannot be used, it is too large

A

B radius cannot be used, it is too small

35
Q

How do you measure the radius of a bend?
A outside of the bend
B inside of the bend
C bend tangent line

A

b.inside of the bend

36
Q

What type of stresses occurs when the meal is bent?
A compression
B tension
C both

37
Q

The intersecting point of the lines that extend from the outer surface of each leg is called the
A mold point
B radius projection point
C.site line point

A

A mold point

38
Q

For a 90° bend of 5052–0, 020 thick, if the setback for the horizontal flat is .176. The setback for the vertical flat would be.
A .088
b..176
C..352

39
Q

For a 90° bend of 5052–0, 020 thick, the setback for the vertical flat would be
A less than the setback for the horizontal flat
B.more than the setback for the horizontal flat
C.equal to the setback for the horizontal flat

A

C.equal to the setback for the horizontal flat

40
Q

When forming a 90° bend with a flat sheet of metal stock using .125 radius, 2024 – T3, .032 thick, if the setback for the horizontal flat is .157, the setback for the vertical flat would be
A .157
b..272
C..040

41
Q

The longer part of a formed angle is the
A flange
B leg
C.mold line

42
Q

The shorter part of a formed angle is the
A leg
B flange
C mold line

43
Q

If each side of a formed angle is the same length, then each side would be known as a
A leg
B flange
C mold line

IA (6 decks)

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