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TSBC 4A > Welding Methods > Flashcards

Welding Methods Flashcards

1
Q 
When "plastic state" and "pressure" are terms used to
describe a type of weld, it is
a) forge welding
b) oxy-acetylene welding
c) resistance welding
d) submerged arc welding
e) electric arc welding
A

a) forge welding

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2
Q

The oldest form of welding is

a) resistance welding
b) spot welding
c) electric arc welding
d) plasma arc welding
e) forge welding

A

e) forge welding

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3
Q 
When a filler rod and very hot flame are used in a welding
process, the weld method is
a) submerged arc welding
b) heli-arc method
c) electric arc method
d) oxy-acetylene method
e) spot-weld method
A

d) oxy-acetylene method

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4
Q 
Non-alloy low carbon steel filler rods are most often used
in
a) submerged arc welding
b) heli-arc welding
c) oxy-acetylene welding
d) electric arc welding
e) forge welding
A

c) oxy-acetylene welding

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5
Q

Cast iron and malleable iron are commonly repaired using

a) oxy-acetylene welding
b) submerged arc welding
c) electric arc welding
d) soldering
e) brazing

A

e) brazing

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6
Q

A “tinning temperature” is used in

a) soldering
b) brazing
c) forging
d) electric arc welding
e) metal cutting

A

b) brazing

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7
Q

When braze welding, the filler rod is usually

a) alloy steel
b) brass
c) antimony
d) aluminum
e) bronze

A

e) bronze

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8
Q

When acetylene is stored in a cylinder it is absorbed in

a) water
b) acetone
c) chromate
d) phosphate
e) acetate

A

a) water

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9
Q

Acetylene should not be used at pressures above

a) 103 kPa
b) 120 kPa
c) 50 kPa
d) 25 kPa
e) 10 kPa

A

a) 103 kPa

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10
Q 
Soft soldering is a form of braze welding where soldering
temperatures are in the range of
a) 150 - 260 degrees Celsius
b) 500 - 1,000 degrees Celsius
c) 1,000 - 1,200 degrees Celsius
d) 1,200 - 1,500 degrees Celsius
e) 700 - 900 degrees Celsius
A

a) 150 - 260 degrees Celsius

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11
Q

Solder connections are usually used on

a) steel lines
b) stainless steel lines
c) copper lines
d) aluminum lines
e) cast iron lines

A

c) copper lines

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12
Q

Acetylene hose connections have

a) right hand threads
b) no threads
c) slip-on connections
d) left hand threads
e) quick couplers

A

d) left hand threads

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13
Q

Which of the following is the colour for an acetylene hose?

a) red
b) green
c) black
d) white
e) yellow

A

a) red

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14
Q

The following grades of Pressure Welders Certificate of
Competency are established under the Boilers Act:
a) “A” and “B”
b) “A”, “B”, and “C”
c) “A”
d) “B”
e) “AC” and “DC”

A

b) “A”, “B”, and “C”

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15
Q 
When brought into an oxygen rich atmosphere, steel will burn
at
a) 358 degrees C
b) 507 degrees C
c) 670 degrees C
d) 870 degrees C
e) 1,213 degrees C
A

d) 870 degrees C

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16
Q

When flame cutting, metal temperature must be brought above

a) 1,000 degrees Celsius
b) 900 degrees Celsius
c) 980 degrees Celsius
d) 1,100 degrees Celsius
e) 870 degrees Celsius

A

e) 870 degrees Celsius

17
Q 
When flame cutting, a blast of pure oxygen is directed into the
heated metal to
a) blow molten metal out
b) burn away a portion of the metal
c) cool the metal
d) produce slag
A

b) burn away a portion of the metal

18
Q 
A standard flame cutting torch has \_\_\_\_\_\_\_\_\_\_ holes in the
tip.
a) four
b) three
c) five
d) seven
e) six
A

d) seven

19
Q 
A rectifier used in arc welding
a) will produce temperatures in the range of 700 to 830
degrees
b) will change AC to DC
c) is used for weld inspection
d) will rectify slag inclusion problems
e) produces an arc in the temperature range of 8,300 to
13,000 degrees C
A

b) will change AC to DC

20
Q

Electric arc temperatures may be as high as

a) 3,000 degrees C
b) 4,250 degrees C
c) 5,325 degrees C
d) 7,450 degrees C
e) 8,300 degrees C

A

e) 8,300 degrees C

21
Q

The current supply for electric arc welding may be a/an:

  1. alternating current
  2. direct current and straight polarity
  3. direct current and reverse polarity
  4. direct current generators
    a) 1, 3
    b) 2, 3, 4
    c) 1, 2, 4
    d) 1, 3, 4
    e) 1, 2, 3, 4
A

e) 1, 2, 3, 4

22
Q 
If a welding electrode has the following identifying number
"E7015", what does the "70" represent?
a) 70 kPa
b) 70,000 kPa
c) 70 psi
d) 70,000 psi
e) 700 psi
A

d) 70,000 psi

23
Q

If a welding electrode has the following identifying number
“E6016”, what does the “1” represent?
a) the welding position
b) AC or DC with medium penetration
c) DC reverse polarity with medium penetration
d) AC with deep penetration
e) DC with deep penetration

A

a) the welding position

24
Q

The electrical power necessary for arc welding may be supplied by:

  1. generators
  2. transformers
  3. rectifiers
  4. pumps
    a) 1, 2, 3, 4
    b) 1, 3, 4
    c) 1, 2
    d) 1, 2, 4
    e) 1, 2, 3
A

e) 1, 2, 3

25
Q

With reverse polarity

a) the welding electrode is connected to the negative terminal
b) AC power is supplied to the electrode
c) the welding electrode is connected to the positive terminal
d) AC or DC power may be supplied to the electrode
e) DC power is supplied to the electrode

A

c) the welding electrode is connected to the positive terminal

26
Q

With straight polarity
a) AC or DC power may be supplied to the electrode
b) DC power is supplied to the electrode
c) the welding electrode is connected to the negative
terminal
d) AC power is supplied to the electrode
e) the welding electrode is connected to the positive
terminal

A

c) the welding electrode is connected to the negative

terminal

27
Q 
A welding electrode stamped "E6010" would have a tensile
strength of
a) 6,000 psi
b) 6,010 psi
c) 6,100 psi
d) 60,000 psi
e) 60,100 psi
A

d) 60,000 psi

28
Q 
The item which keeps the weld from oxidizing, cooling too
fast, and the bead smooth during submerged arc welding is
the
a) arc temperature
b) flux
c) steadiness of the welder's hand
d) rod composition
e) rod rate of feed
A

b) flux

29
Q

Advantages of submerged arc welding include:
1. a protective coating is not required over the electrode
2. the arc is not visible
3. weld seams are neat and uniform in appearance
4. a skilled welder is not required to operate the
machinery
5. very little gas or fumes rise from the weld
a) 2, 3, 5
b) 1, 4, 5
c) 2, 3, 4
d) 3, 4, 5
e) 1, 3, 5

A

a) 2, 3, 5

30
Q

Submerged arc welding is

a) an oxyacetylene welding process
b) an AC electric welding process
c) an AC or DC electric welding process
d) a DC welding process
e) a braze welding process

A

c) an AC or DC electric welding process

31
Q

A common method used to start the arc in submerged arc
welding is with
a) a piece of steel wool
b) a long wooden match
c) an electric sparker
d) an oil soaked torch
e) a striker similar to that used in oxyacetylene

A

a) a piece of steel wool

TSBC 4A (38 decks)

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