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Bsen Standards > Bsen Standards > Flashcards

Bsen Standards Flashcards

1
Q

22553

A

Weld symbols

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2
Q

2560

A

Covered electrodes

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3
Q

15614

A

Weld procedures qualifier

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4
Q

9606

A

Wesley approvals

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5
Q

What characteristic is mig / mag / saw .?

A

Flat ….. constant voltage

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6
Q

Characteristic for tig / MMA

A

Drooping , Constant current

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7
Q

Volts and amps range for dip ?

A

21V / 200 Amps

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8
Q

Volts and amps range for Spray?

A

26V / 230A

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9
Q

What does a rectifier do ?

A

Changes AC to DC

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10
Q

What does a transformer do?

A

Steps up Amps / Steps down Voltage

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11
Q

What is a homogenous welded joint?

A

The filler material is off a similar composition

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12
Q

What is Hetrogenous welded joint

A

The filler material is of a different composition

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13
Q

Welders skill without working to a procedure ?

A

Bs 4872

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14
Q 
On most welding equipment , the OcV is 
A..60-100
B..222- 240 
C...23-40v
30-50
A

A..60-100

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15
Q

In the saw process , which polarity is often used to prevent arc blow?

A

AC

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16
Q

In the SAW process , what is the main effect of increasing the voltage ?

A..wider weld
B..Narrow weld
C..Greater Penetration
D.. All of the above

A

A.. Wider weld

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17
Q

The saw process used below 1000 amps would be classified as having a ?

A..flat characteristic
B..Drooping characteristic
C..constant Current
D..high output

A

A..flat characteristic

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18
Q 
Tandem wires are often used in the saw process to improve deposition rates to prevent arc blow , the polarity combination is ?
A..D.cLeading and A.c following 
B..AC leading and DC following
C.. DC+ leading and DC neg following
D..DC neg leading and DC + following
A

A) .. Dc leading ; ac following

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19
Q

Saw process welding above 1000 amps , the electrical characteristic is?

A..constant current
B..Constant Voltage
C..Flat characteristic
D..D.C +

A

A.. constant current ( drooping)

20
Q

Maximum thickness for electro slag welding process ?

A..100mm
B..200mm
C..300mm
D..400mm

A

C..300 mum

21
Q

Mig/Mag If stick out length was increased what would be the effect?

A.. Voltage increase
B..Amperage increase
C..Amps would decrease
D..Volts would decrease

A

C..Amps would decrease

22
Q

Solid wire Mig/Mag ,,, which polarity ?

A..Ac
B..Dc
C..Dc +
D..all of the above

A

C.. DC +

23
Q

Increase in Voltage Mig/Mag would have what effect ?

A..increase penetration
B..decrease penetration

A

B.. decrease penetration

24
Q

The current in MiG Mag welding is controlled by which parameter ?

A..Voltage
B.. wire feeed speed
C..Inductance
D..All of. The above

A

D..all of the above

25
Q

How would spatter be controlled using dip transfer ?

A.. use pure Co2
B..Use DC neg polarity
C..Use inductance
D..Use pure argon

A

C..Use inductance

26
Q

In Mig/Mag welding , the spray mode is characterised by ?

A.. an open and closed arc cycle
B.. A long open arc
C..a droplet being pulsed across the arc
D..All of the above

A

B.. A long open arc

27
Q

In MiG / Mag , which metal transfer uses inductance to control welding conditions

A..Spray
B..Dip
C..Globular
D..Pulse

A

B..Dip

28
Q

Select a typical range for Spray transfer

A.. 21V 200 A
B.. 26V 230 A
C.. 24V 190 A
D.. 20V 150 A

A

A..21V 200A

29
Q

In MMA welding , which polarity would give the highest level of penetration ?

A.. AC
D..Dc neg
C..DC pos
D..same

A

C.. Dc pos

30
Q

MMA , if the arc length is increased , what is the most likely outcome?

A… higher pen
B..Slight decrease in Amps
C.. Decrease in volts
D.. All of thy above

A

B.. slight decrease in Amps

31
Q

What is the purpose of a rectifier in welding equipment ?

A..Changes AC TO DC
B.. steps up amperage , steps down voltage
C..steps up Voltage and steps down Amps
D.. all of the above

A

A.. changes AC to DC

32
Q

What is the purpose of a transformer on welding equipment?

A.. to smooth the welding current
B..to step down Voltage and step up amperage
C.. to step up Amperage and step up Voltage
D.. to improve a rc initiation

A

B.. to step down Voltage and step up amperage

33
Q

Which statement is true , regarding the welding arc ?

A..Electrons are negatively charged , ions are positively charged
B.. Electrons are positively charged and IONs are negatively charged
C.. Electrons and IONs change their polarity depending on Welding current
D.. They alternate between negative and positive

A

A.. Electrones are negatively charged , IONs are positively charged

34
Q

Inductance in welding current does what ?

A..Controls the arc gap
B..changes the rate at which current rises
C..sets up a resistance so filler material heats quicker
D.. Ensures arc initiation is smoother

A

B … Changes the rate at which current rises

35
Q

Electrical power consumption is measured using ?

A..A = W x V
B..W= I x V
C.. V= I x R
D.. R = W x I

A

B.. W=I x V

36
Q

Which of the following statements is true ?

A…the anode is polite and the cathode is negative
B.. the cathode is positive , the anode negative
C.. they alternate during welding on DC
D.. all f the above

A

A.. the anode is positive and the cathode is Negative

37
Q

OHMS law is ?

A..W= I xR
B.. V= Ix R
C.. I = R x W
D.. R= Wx I

A

B .. V = I x R

38
Q 
Why are pure tungsten electrodes not used extensively ?
A.. too expensive
B.. They have high ionisation potential 
C.. They have an unstable arc 
D.. difficult to prepare
A

B.. they have high ionisation potentiometer

39
Q

What is the purpose of the AC balance control Function?

A.. Gives good arc stability
B.. Allows greater control over Amperage
C.. Gives control over penetration
D.. allows switching from DC to AC

A

C.. gives control over penetration

40
Q 
Which tungsten type is used for welding aluminium ?
A.. Zirconiated 
B.. Thoriated 
C.. Chromium 
D.. cLad
A

A.. Zirconiated

41
Q

Typical starting volts for Arc known as OCV ,

A). 50 V
B) 70 v
C) 80 v
D) 20V

A

C). 80 Volts

42
Q

MMA electrodes ,

Cellulosic

A) Straight from box / no baking or drying
B) dry up to 120 degrees - no baking
C) use from pack within 4 hours , no baking

A

A) Straight from box , no baking /Drying

43
Q

Rutile electrodes

A) use straight from the pack within 4 hours , no re baking !
B use straight from the pack , no baking , no drying
C) dry up to 120 degrees , no baking

A

C) dry up to 120 degrees , no baking !

44
Q

Basic electrodes

A) dry up to 120 degrees , no baking
B) use straight from the pack , no baking / drying!
C) use straight from the pack withi 4 hours , no re baking !

A

C) Use straight from the pack within 4 hours , no re baking !

45
Q

Baking temperature for MMA electrodes

A) 250 degrees for 2 hours
B) 350 degrees for 30 minutes
C) 350 degrees for 60 - 90 minutes
D) 350 degrees for 60 - 120 minutes

A

D) 350 degrees for 60 - 120 minutes

Bsen Standards (5 decks)

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