Quiz Questions

Question 1 1 Marks

What ampere range required for setting 1.2mm filler wire for welding mildsteel in MIG/MAG welding?

A

50 - 100 Amps

B

70 - 120 Amps

C

90 - 150 Amps

D

100 - 225 Amps

Question 2 1 Marks

What do you call a weld joint having small holes/cavities due to entrapped gas packets?

A

Lack of fusion

B

Lack of penetration

C

Spatter

D

Porosity

Question 3 1 Marks

What type of operation is generally used in GMAW?

A

Automatic

B

Semi automatic

C

Fully automatic

D

Manual method

Question 4 1 Marks

Which welding method starting of welding done by using steel wool or iron powder?

A

SAW

B

GTAW

C

GMAW

D

MMAW

Question 5 1 Marks

What is the usual length of tack weld in a T-joint in GMAW flat position welding?

A

5 mm

B

10 mm

C

15 mm

D

20 mm

Question 6 1 Marks

What is the name of welding process if the arc produced by a consumable metal electrode is protected by inert gas?

A

MAG welding

B

MIG welding

C

TIG welding

D

Plasma welding

Question 7 1 Marks

Which gas is generated during GMAW on using CO2 as shielding gas?

A

Helium

B

Carbon monoxide

C

Argon

D

Oxygen

Question 8 1 Marks

What is the angle of inclination of weld torch for flat position in GMAW welding process?

A

5 Degree - 10 Degree

B

10 Degree - 15 Degree

C

15 Degree - 25 Degree

D

25 Degree - 35 Degree

Question 9 1 Marks

What is the difficulty in starting of arc in GMAW?

A

Wrong polarity

B

Unsteady hand

C

Work piece dirty

D

Excess of voltage

Question 10 1 Marks

Which angle of pre setting is to compensate distortion on horizontal single V butt joint metal thickness 10 mm and root gap 2mm ?

A

173 Degree

B

178 Degree

C

180 Degree

D

183 Degree

Question 11 1 Marks

Which shielding gas is used in MIG welding?

A

Argon

B

Argon + 20% CO2

C

Argon + 1% oxygen

D

Argon + 10% hydrogen

Question 12 1 Marks

How many types of basic welding positions in GMA welding?

A

2 types

B

3 types

C

4 types

D

5 types

Question 13 1 Marks

What type of weld is used on prepared holes of overlap joints?

A

Tack weld

B

Fillet weld

C

Backing weld

D

Plug or slot weld

Question 14 1 Marks

What Non-destructive test is done using coloured dye and fluorescent liquid to find minute cracks?

A

Radiographic test

B

Magnetic test

C

Ultrasonic test

D

Liquid penetration test

Question 15 1 Marks

Why the argon and CO2 mixture is used in FCAW?

A

Smooth spray transfer, with minimum slag

B

Smooth globular transfer

C

Smooth pulsed transfer

D

Smooth dip transfer

Question 16 1 Marks

Which heat treatment of steel increases hardness, but decreases strength and ductility?

A

Annealing

B

Hardening

C

Normalising

D

Case hardening

Question 17 1 Marks

How the welder observes welding area of the joint in electron beam welding?

A

Safe optical mirror

B

Safe optical helmet

C

Safe optical hand screen having correct shade

D

Safe optical viewing system containing optical mirror

Question 18 1 Marks

Which metal surfacing method is ideal for thin layers that can flow to corner and edges of the job?

A

TIG welding

B

MIG welding

C

Oxy-acetylene welding

D

Submerged arc welding

Question 19 1 Marks

How many Kgs weight of thermit is required against one Kg of wax?

A

10 to 15 Kgs

B

11 to 15 Kgs

C

12 to 14 Kgs

D

12 to 16 Kgs

Question 20 1 Marks

What are the positions used in SAW?

A

Flat

B

Vertical

C

Overhead

D

Flat and horizontal

Question 21 1 Marks

What is the electrode inclination to the metal surface in T-joint welding of 10 mm thickness metal by down hand position?

A

30 Degree

B

45 Degree

C

60 Degree

D

75 Degree

Question 22 1 Marks

Where is electron beam generated, controlled and accelerated?

A

Atmosphere

B

Electron gun

C

Electron gun

D

Vacuum chamber

Question 23 1 Marks

What defect will occur in the weld metal if the arc voltage and travel speed is low in MIG / MAG welding?

A

Blow hole

B

Under cut

C

Wire struck

D

Weld overlap

Question 24 1 Marks

How to troubleshoot the burn back problem if the contact tip is plugged or worn out?

A

Adjust the contact tip

B

Damaged cable connections

C

Clean and replace contact tip

D

Low voltage and insufficient heat

Question 25 1 Marks

Which metal transfer process in GMAW produces strong weld with least spatter?

A

Spray transfer

B

Globular transfer

C

Dip transfer

D

Pulsed transfer

Question 26 1 Marks

What gas combination will reduce spatter defect and improve arc stability in a MIG/MAG welding process?

A

CO2 / Neon

B

Argon / CO2

C

Helium CO2

D

Argon / CO2 / O2

Question 27 1 Marks

What is percentage of deposition efficiency in FCAW process?

A

93% to 97%

B

80% to 86%

C

70% to 76%

D

60% to 67%

Question 28 1 Marks

How the filler wire is fed in the GMAW welding process?

A

Manually

B

No feeding

C

Automatically

D

Semi automatic

Question 29 1 Marks

Which type of core wire is suitable for welding carbon steel, alloy steel and stainless steel under FCAW?

A

Flux cored electrode

B

Gas shield flux wire

C

Used flux core and gas shielded

D

Flux is external and shielded

Question 30 1 Marks

What type of test is used for vessels, tanks and pipe containing pressure?

A

Visual inspection

B

Leak or pressure test

C

Stethoscopic test

D

Magnetic particles test

Question 31 1 Marks

How many types of flux cored wires are used in FCAW?

A

2 types

B

3 types

C

4 types

D

5 types

Question 32 1 Marks

What is the range of electrode for MAG / CO2 welding?

A

0.8 to 1.6 mm

B

0.7 to 1.3 mm

C

0.6 to 0.9 mm

D

0.5 to 0.7 mm

Question 33 1 Marks

What is the name of the defect occuring to an unsteady hand in GMAW?

A

Over fusion

B

Burn through

C

Distortion

D

Waviness of bead

Question 34 1 Marks

Why the welder's cloth should be free from oil, grease etc, while welding?

A

To protect the job

B

To deflect the arc rays

C

To avoid catching fire

D

To safe guard your inner cloth

Question 35 1 Marks

What is the name of metal transfer system in FCAW?

A

Dip transfer

B

Free flight transfer

C

Globulor transfer

D

Purged transfer

Question 36 1 Marks

What is the defect in a weld joint, in which the weld metal melting through base metal resulting in holes?

A

Excessive penetration

B

Lack of penetration

C

Burn through

D

Distortion

Question 37 1 Marks

Which heat treatment process is very similar to annealing but the job are allowed to cool in air?

A

Hardening

B

Tempering

C

Normalising

D

Case hardening

Question 38 1 Marks

What device is used to protect face from UV and Infra-red radiation during welding?

A

Blue goggles

B

Plain goggles

C

White goggles

D

Helmet with filtered colour glass

Question 39 1 Marks

Which type of defect is caused if the gas flowing rate is uneven?

A

Porosity

B

Distortion

C

Under cut

D

Incomplete fusion

Question 40 1 Marks

What is the purpose of using copper coated filler wire in MIG / MAG welding?

A

To prevent rust

B

To prevent rust

C

To prevent atmosphere

D

To prevent base metal reaction

Question 41 1 Marks

What is the usual torch angle tilt on either side of vertical in GMAW?

A

10 Degree - 20 Degree

B

20 Degree - 25 Degree

C

25 Degree - 30 Degree

D

30 Degree - 35 Degree

Question 42 1 Marks

What is the NDT method, used to detect surface and subsurface defects on ferrous metals, using iron power?

A

X-ray test

B

Gamma ray test

C

Magnetic particle test

D

Stethoscopic test

Question 43 1 Marks

Which is the weld position of GMA welding if the weld is deposited underside of the job?

A

Vertical position

B

Horizontal position

C

Over head position

D

Down head position

Question 44 1 Marks

Which type of apron is suitable to protect from heat and radiation during welding?

A

Silk apron

B

Cotton apron

C

Leather apron

D

Asbestos apron

Question 45 1 Marks

What type of hand tool is used to open a gas cylinder in welding practice?

A

X key

B

Allen key

C

DE spanner

D

Spindle key

Question 46 1 Marks

What protective equipment (PPE) is used to protect hand from burning injury?

A

Apron

B

Goggles

C

Protective shield

D

Leather gloves

Question 47 1 Marks

Which type of welding is to be used to make joint of thick pipes of rails?

A

Thermit welding

B

Pressure Thermit welding

C

Pressure Thermit welding

D

Fusion Thermit welding

Question 48 1 Marks

Which type of weld is developed electro slag welding?

A

Gas welding

B

Resistance welding

C

Submerged arc welding

D

Shielded metal arc welding

Question 49 1 Marks

What type of safety equipment is worn while checking the welding joint of a overhead crane frame?

A

Apron

B

Helmet

C

Hand gloves

D

Hand screen

Question 50 1 Marks

Which type of electrode provides protective slag in flux cored arc welding?

A

Tubular cored flux electrode

B

External cored electrode

C

Additional cored flux electrode

D

Shielding gas type only

Question 51 1 Marks

Which electrode wire is more suitable for carbon steel fabrication in GMAW process?

A

70S - 6

B

70T - 2

C

70S - 2

D

70S - 3

Question 52 1 Marks

What is the purpose of fitting clear glasses on either side of coloured glass in a helmet?

A

Protect from rays

B

Protect from heat

C

Protect from spatters

D

Protect from radiation

Question 53 1 Marks

What is the ability of metal to cut another metal?

A

Creep

B

Fatigue

C

Hardness

D

Strength

Question 54 1 Marks

What ampere range is required for setting 1.2mm filler wire for welding mild steel in MIG/MAG welding?

A

50 - 100 Amps

B

70 - 120 Amps

C

90 - 150 Amps

D

100 - 225 Amps

Question 55 1 Marks

Which welding process is done by chemical reaction between a metal oxide and metal?

A

Electro slag welding

B

Election beam welding

C

Thermit welding

D

TIG welding

Question 56 1 Marks

How much gas flow rate is required to weld a butt joint with 0.8 mm dia MS filler rod of wire feed rate 3 - 4 m/min at 18 to 20 volts?

A

to 8 Lpm

B

8 to 10 Lpm

C

10 to 12 Lpm

D

12 to 14 Lpm

Question 57 1 Marks

What is the reason that obstructed joints cannot be welded by electron beam welding process?

A

Electron beam travel in curved line

B

Electron beam travel in different direction

C

Electron beam travel only in straight line

D

Electron beam travel in circular line

Question 58 1 Marks

What is the operation to clean the cylinder valve before fixing the regulator to the argon cylinder?

A

Closing

B

Opening

C

Shutting

D

Cracking

Question 59 1 Marks

What is the name of heat treatment process where the steel is reheated to a suitable temperature below the critical point (heating) to improve the toughness and ductility?

A

Annealing

B

Hardening

C

Tempering

D

Normalising

Question 60 1 Marks

Which gas/mixture is likely to reduce the spatter loss in FCAW?

A

Argon and CO2 mixed

B

Argon and helium mixed

C

Co2 and helium mixed

D

Only CO2 gas

Question 61 1 Marks

What is the type of weld position in which the weld metal is deposited under side of the joint?

A

Down hand position

B

Horizontal position

C

Vertical position

D

Overhead position

Question 62 1 Marks

Which is the only welding position in electro slag welding process?

A

Down hand

B

Horizonta

C

Vertical

D

Over head

Question 63 1 Marks

Which type of welding under FCAW, is more suitable for welding all types of steel?

A

Only use flux cored electrode

B

Only use gas shielding flux

C

Only use gas shielding flux

D

Flux is external and also gas also external

Question 64 1 Marks

How to protect from the toxic fumes during welding operation?

A

Wear helmet

B

Use hand screen

C

Use leather apron

D

Use respirator pad

Question 65 1 Marks

What defects occurs to a weld joint, if it is provided with insufficient heat input?

A

Lack of fusion

B

Lack of penetration

C

Lack of metal deposit

D

Uneven bead deposit

Question 66 1 Marks

What is the lens shade fitted in a helmet as per the recommendation of welding code for setting of 150 Amps for MMAW?

A

A # 10

B

A # 11

C

A # 12

D

A # 13

Question 67 1 Marks

What type of joints are made by the groove welds in GMA welding?

A

Butt weld

B

T weld

C

Corner weld

D

Lap weld

Question 68 1 Marks

What is the main purpose of 'Normalising' steel?

A

To control hardness

B

To prevent cracking

C

To make welding operation easier

D

To produce fine grain of uniform structure

Question 69 1 Marks

What is the name of the welding defect, with weld metal contracting during welding process?

A

Distortion

B

Excessive penetration

C

Lack of penetration

D

Porosity

Question 70 1 Marks

What are the gases mixed for shielding in FCAW?

A

Argon and O2

B

Argon and CO2

C

Helium and CO2

D

Argon and helium

Question 71 1 Marks

Which heat treatment process, if material is softened and suitable for machining?

A

Annealing

B

Tempering

C

Normalising

D

Case hardening

Question 72 1 Marks

Which combination of metal and shielding gas give excellent cleaning action in GMAW welding process?

A

Copper, Argon

B

Aluminium, Helium

C

Magnesium, Argon

D

Stainless steel Argon

Question 73 1 Marks

What is the limitation for submerged arc welding process?

A

Limited to vertical position

B

Limited to non ferrous metals

C

Limited to over head position

D

Limited to flat and horizontal fillet welds

Question 74 1 Marks

What is the effect in MIG / MAG welding for a short stick out distance?

A

Porosity in weldment

B

Arc blow in weldment

C

Less spatter deposit in nozzle

D

More spatter deposit in nozzle

Question 75 1 Marks

How the pre-heating temperature is checked before welding wrought iron or cast metals?

A

Flow of spatters

B

Size of blow holes

C

Temperature indicating crayon

D

Count of pin holes

Question 76 1 Marks

Which type of welds are often used to assist assembly or to maintain edge alignment during welding?

A

Root run weld

B

Level weld

C

Tack weld

D

Stringer bevel

Question 77 1 Marks

What is the trouble shooting to wire wrapping on drive rolls of wire feeder in GMAW?

A

Adjust drive rolls pressure

B

Replace drive rolls and guides

C

Check drive rolls align properly

D

Replace the drive motor

Question 78 1 Marks

Which is the remedy for the contraction of weld metal due to excess of heat input that moves the base metal changes the angle?

A

Support on solid surface with two hands

B

Check gas flow rate and leakage of gas

C

Use clean and dry weld wire

D

Weld small segments and allow cooling

Question 79 1 Marks

What defects occur to a weld joint, if it is provided with insufficient heat input?

A

Lack of fusion

B

Lack of penetration

C

Lack of metal deposit

D

Uneven bead deposit

Question 80 1 Marks

Which welding process granulated flux is fed through hopper to the welding spot?

A

GTAW

B

SMAW

C

GMAW

D

SAW

Question 81 1 Marks

Which is the weld position of GMA welding if the filler metal is deposited from the upper side of the joint during welding?

A

Vertical position

B

Horizontal position

C

Over head position

D

Down hand position

Question 82 1 Marks

Why different type of pressure rollers are used in FCAW?

A

Knurled rollers

B

Without roller of travel wire

C

With pressure of tubular wire

D

Positive feeding without pressure on tubular

Question 83 1 Marks

How is thermit mixture ignited?

A

Petrol

B

Diesel

C

Fire stick

D

By match or magnesium ribbon

Question 84 1 Marks

Which type of electrodes are used in MAG/CO2 welding?

A

Flux coated electrodes

B

Bare wire electrode

C

Flux cored electrodes

D

Guided bend test Guided bend test Tungsten electrode

Question 85 1 Marks

What is the distinct differences between GMAW and FCAW equipments?

A

Nozzle and torch

B

Construction of torch and feed rollers

C

Machine and torch

D

Feed rolls and gas cylinders

Question 86 1 Marks

Which combination of shield gas in GMAW process produce good arc stability for carbon steel?

A

Argon + 20% CO2

B

CO2

C

Pure argon

D

Argon + 5% CO2

Question 87 1 Marks

Which metal is welded with self shielded type FCAW?

A

Low alloy steel

B

Stainless steel

C

Carbon steel

D

Different metal and different position

Question 88 1 Marks

Which is adjusted in electron beam welding to eliminate the defect of porosity?

A

Spot size

B

Deflection

C

Weld penetration

D

Focal position / focus current

Question 89 1 Marks

What is the operation of heating steel to specific temperature and cooling suddenly?

A

Annealing

B

Hardening

C

Tempering

D

Quenching

Question 90 1 Marks

Why the argon and CO2 mixing gas used in FCAW?

A

Smooth spray transfer of melt

B

Smooth globular transfer

C

Smooth pulsed transfer

D

Smooth dip transfer

Question 91 1 Marks

Which heat treatment process produces only outer surfaces of job hardened, to some depth?

A

Annealing

B

Hardening

C

Normalising

D

Case hardening

Question 92 1 Marks

What is the source of heat to melt the work piece in an electron beam welding?

A

By heat

B

By high speed electrons

C

By beam heat

D

By current

Question 93 1 Marks

What is the weld defect if wire feed speed too high?

A

Porosity

B

Spatters

C

Incomplete fusion

D

Lack of penetration

Question 94 1 Marks

What is the solution if burn back occurs due to irregular wire feeding in GMAW process?

A

Cut out kink wire

B

Replace of spool

C

Cut the kink wire and replace spool

D

Adjusted to kinked wire again

Question 95 1 Marks

Which heat treatment process is employed to remove brittleness in a chisel?

A

Annealing

B

Hardening

C

Tempering

D

Normalising

Question 96 1 Marks

What should be the initial angle of two plates in a T joint if the final angle between them is 90 Degree after completion of welding?

A

93 Degree

B

90 Degree

C

85 Degree

D

75 Degree

Question 97 1 Marks

Which is the operation to relieve residual stresses from the welding joint?

A

Pre-heating

B

Peening

C

Drilling

D

Post heating

Question 98 1 Marks

What type of lens shade is to be fixed in helmet while doing MIG welding?

A

A # 09

B

A # 10

C

A # 11

D

A # 12

Question 99 1 Marks

How many types of metal transfer in GMAW/CO2 welding process?

A

One

B

Two

C

Three

D

Four

Question 100 1 Marks

Why carbon and manganese are added to plain thermit mixture on rail welding?

A

To get good fusion

B

To get hardness

C

To get fine welding

D

To get smooth finishing

Question 101 1 Marks

What is the temperature produced by chemical reaction in thermit welding?

A

5000 Degree Centigrade

B

5000 Degree fahrenheit

C

4000 Degree Centigrade

D

4000 Degree fahrenheit

Question 102 1 Marks

What is basic safety environmental condition for the welding area?

A

Dust free

B

Clean area

C

No congestion

D

Well ventilated

Question 103 1 Marks

How much time it takes for the thermit mould to cool, after welding by thermit process?

A

7 Hrs

B

9 Hrs

C

10 Hrs

D

12 Hrs

Question 104 1 Marks

What is the usual torch angle tilt on either side of vertical in GMAW?

A

10 Degree - 20 Degree

B

20 Degree - 25 Degree

C

25 Degree - 30 Degree

D

30 Degree - 35 Degree

What ampere range required for setting 1.2mm filler wire for welding mildsteel in MIG/MAG welding?

What do you call a weld joint having small holes/cavities due to entrapped gas packets?

What type of operation is generally used in GMAW?

Which welding method starting of welding done by using steel wool or iron powder?

What is the usual length of tack weld in a T-joint in GMAW flat position welding?

What is the name of welding process if the arc produced by a consumable metal electrode is protected by inert gas?

Which gas is generated during GMAW on using CO<sub>2</sub> as shielding gas?

What is the angle of inclination of weld torch for flat position in GMAW welding process?

What is the difficulty in starting of arc in GMAW?

Which angle of pre setting is to compensate distortion on horizontal single V butt joint metal thickness 10 mm and root gap 2mm ?

Which shielding gas is used in MIG welding?

How many types of basic welding positions in GMA welding?

What type of weld is used on prepared holes of overlap joints?

What Non-destructive test is done using coloured dye and fluorescent liquid to find minute cracks?

Why the argon and CO<sub>2</sub> mixture is used in FCAW?

Which heat treatment of steel increases hardness, but decreases strength and ductility?

How the welder observes welding area of the joint in electron beam welding?

Which metal surfacing method is ideal for thin layers that can flow to corner and edges of the job?

How many Kgs weight of thermit is required against one Kg of wax?

What are the positions used in SAW?

What is the electrode inclination to the metal surface in T-joint welding of 10 mm thickness metal by down hand position?

Where is electron beam generated, controlled and accelerated?

What defect will occur in the weld metal if the arc voltage and travel speed is low in MIG / MAG welding?

How to troubleshoot the burn back problem if the contact tip is plugged or worn out?

Which metal transfer process in GMAW produces strong weld with least spatter?

What gas combination will reduce spatter defect and improve arc stability in a MIG/MAG welding process?

What is percentage of deposition efficiency in FCAW process?

How the filler wire is fed in the GMAW welding process?

Which type of core wire is suitable for welding carbon steel, alloy steel and stainless steel under FCAW?

What type of test is used for vessels, tanks and pipe containing pressure?

How many types of flux cored wires are used in FCAW?

What is the range of electrode for MAG / CO<sub>2</sub> welding?

What is the name of the defect occuring to an unsteady hand in GMAW?

Why the welder's cloth should be free from oil, grease etc, while welding?

What is the name of metal transfer system in FCAW?

What is the defect in a weld joint, in which the weld metal melting through base metal resulting in holes?

Which heat treatment process is very similar to annealing but the job are allowed to cool in air?

What device is used to protect face from UV and Infra-red radiation during welding?

Which type of defect is caused if the gas flowing rate is uneven?

What is the purpose of using copper coated filler wire in MIG / MAG welding?

What is the usual torch angle tilt on either side of vertical in GMAW?

What is the NDT method, used to detect surface and subsurface defects on ferrous metals, using iron power?

Which is the weld position of GMA welding if the weld is deposited underside of the job?

Which type of apron is suitable to protect from heat and radiation during welding?

What type of hand tool is used to open a gas cylinder in welding practice?

What protective equipment (PPE) is used to protect hand from burning injury?

Which type of welding is to be used to make joint of thick pipes of rails?

Which type of weld is developed electro slag welding?

What type of safety equipment is worn while checking the welding joint of a overhead crane frame?

Which type of electrode provides protective slag in flux cored arc welding?

Which electrode wire is more suitable for carbon steel fabrication in GMAW process?

What is the purpose of fitting clear glasses on either side of coloured glass in a helmet?

What is the ability of metal to cut another metal?

What ampere range is required for setting 1.2mm filler wire for welding mild steel in MIG/MAG welding?

Which welding process is done by chemical reaction between a metal oxide and metal?

How much gas flow rate is required to weld a butt joint with 0.8 mm dia MS filler rod of wire feed rate 3 - 4 m/min at 18 to 20 volts?

What is the reason that obstructed joints cannot be welded by electron beam welding process?

What is the operation to clean the cylinder valve before fixing the regulator to the argon cylinder?

What is the name of heat treatment process where the steel is reheated to a suitable temperature below the critical point (heating) to improve the toughness and ductility?

Which gas/mixture is likely to reduce the spatter loss in FCAW?

What is the type of weld position in which the weld metal is deposited under side of the joint?

Which is the only welding position in electro slag welding process?

Which type of welding under FCAW, is more suitable for welding all types of steel?

How to protect from the toxic fumes during welding operation?

What defects occurs to a weld joint, if it is provided with insufficient heat input?

What is the lens shade fitted in a helmet as per the recommendation of welding code for setting of 150 Amps for MMAW?

What type of joints are made by the groove welds in GMA welding?

What is the main purpose of 'Normalising' steel?

What is the name of the welding defect, with weld metal contracting during welding process?

What are the gases mixed for shielding in FCAW?

Which heat treatment process, if material is softened and suitable for machining?

Which combination of metal and shielding gas give excellent cleaning action in GMAW welding process?

What is the limitation for submerged arc welding process?

What is the effect in MIG / MAG welding for a short stick out distance?

How the pre-heating temperature is checked before welding wrought iron or cast metals?

Which type of welds are often used to assist assembly or to maintain edge alignment during welding?

What is the trouble shooting to wire wrapping on drive rolls of wire feeder in GMAW?

Which is the remedy for the contraction of weld metal due to excess of heat input that moves the base metal changes the angle?

What defects occur to a weld joint, if it is provided with insufficient heat input?