Quiz 3 Flashcards by Kristine Nguyen

Interatomic bond of joining metals can be achieved by —–
A) Pressure B) Fusion C) Pressure-Fusion D) All

All

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Welding is a pressure welding process.
A) Explosive B) Gas C) Resistance D) Thermit

Explosive

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In —- welding the arc is formed between two electrodes
A) Thermit B) MIG C) Atomic Hydrogen D) TIG

Atomic Hydrogen

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Friction welding is ——- welding process.
A) Fusion B) Pressure C) Pressure-Fusion D) All

Pressure

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Welding process which uses consumable electrodes is ——
A) TIG B) Atomic Hydrogen C) MIG D) Thermit

MIG

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Welding process which used non-consumable electrodes is —–
A) MIG B) Submerged Arc C) Atomic Hydrogen D) SMAW

Atomic Hydrogen

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Ultrasonic welding is a —– welding process.
A) Pressure B) Fusion C) Pressure – Fusion D) Cold

Pressure

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—— is not an Arc welding process.
A) TIG B) MIG C) EGW D) ESW

ESW

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Coated electrodes are used in —– welding.
A) TIG B) MIG C) SMAW D) Submerged Arc

SMAW

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The welding process in which shielding gas is used —-
A) TIG B) MIG C) EGW D) All

All

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The most widely used fuel gas in gas welding is —-
A) Hydrogen B) Acetylene C) Propane D) Coal gas

Acetylene

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——- is a common gas in all gas welding processes.
A) Hydrogen B) Acetylene C) Nitrogen D) Oxygen

Oxygen

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High flame temperature is possible with —- fuel gas.
A) Acetylene B) Hydrogen C) Coal gas D) Propane

Acetylene

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Oxygen cylinders are coated with —— colour.
A) Maroon B) Black C) Green D) Yellow

Black

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Acetylene cylinders are coated with —— colour.
A) Maroon B) Black C) Green D) Yellow

Maroon

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Acetylene gas is dissolved in —- while storing in strong cylinders.
A) Water B) Salt C) Acetone D) Coal

Acetone

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The gas that is first released to initiate gas flame in gas welding——
A) Oxygen B) Acetylene C) Both A & B D) None

Acetylene

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If excess oxygen is supplied to gas flame the resulting flame is —–
A) Reducing B) Oxidizing C) Neutral D) Carburizing

Oxidizing

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The voltage in the Arc increases as arc length ———
A) Decreases B) Fluctuates C) Constant D) Increases

Constant

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The gas flame recommended for all kinds of steel products welding is —-
A) Reducing B) Neutral C) Carburizing D) Oxidizing

Reducing

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Intermittent red feather appears in —- type of gas flame.
A) Oxidizing B) Neutral C) Reducing D) All

Neutral

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Maximum flame temperature is in ——– gas flame.
A) Oxidizing B) Neutral C) Reducing D) Carburizing

Carburizing

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The type of weld joint which makes the shape of joined workpieces as “L” is —
A) Butt joint B) T – Joint C) Edge joint D) Corner joint

T-point

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The type of butt joint recommended for metals having thickness less than 5 mm
is –
A) Single V Butt B) Square Butt C) Double V Butt D) All

Single V-butt

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Both electrode and workpiece will experience same amount of arc heat in ---- welding. A) AC B) DCEN C) DCEP D) Both AC & DC

DCEN

In gas welding to join metals of thickness more than 15mm, the Butt joint recommended is ----- A) Double V B) Single V C) Square Butt D) All

All

The welding process mostly recommended for repair works is ---- A) Arc welding B) Gas welding C) Thermit welding D) Resistance welding

Gas Welding

The gas welding technique recommended for high thick metal joining is ----- A) Left hand weld B) Back hand weld C) Fore hand weld D) All

Left hand weld

High pressure oxygen is impinged on workpiece in ------ process. A) Gas welding B) Arc Welding C) Thermit welding D) Gas Cutting

Thermit

The electrode material in Metal Arc Welding process is ------ A) Same as workpiece B) Tungsten C) Carbon D) Both B & C

Same as workpiece

The power source used in submerged arc welding is ---- A) AC B) DCEN C) DCEP D) All

DCEP

The approximate arc heat at cathode in Arc welding is ----- of Arc. A) 2/3 B) ½ C) 1/3 D) ¾

2/3

For welding thin metals the Arc welding power recommended is ----- A) AC B) DCEN C) DCEP D) Both AC & DC

Both AC & DC

----- type of power source is recommended for manual arc welding. A) Constant Current B) Constant Voltage C) Constant Power D) All

Constant Power

---- non-consumable electrodes used in Arc Welding. A) Tungsten B) Carbon C) Same as workpiece D) Both A & B

Both A & B

The welding process used for circumferential butt welding on pressure vessels is – A) MIG B) TIG C) SAW D) SMAW

SMAW

To maintain maximum power in Arc the arc length should be ------ A) More B) Less C) Optimum D) Too small

Too small

The welding process used to join large cross sections in single pass ---- A) ESW B) EGW C) Thermit D) All

All

The third or fourth digit in Electrode classification indicates ----- A) Weld position B) Type of coating C) Tensile strength D) Spl. Requirement

Tensile strength

The purpose of electrode coating is to ------ A) Generate shielding gas B) Arc stabilization C) Add flux D) All

Generate shielding gas

The arc welding process in which arc is not visible is ---- A) Submerged Arc welding B) Sub-Arc Welding C) Hidden Arc Welding D) All

Sub-Arc Welding

The first two or three digits in Electrode classification indicate ----- A) Weld position B) Type of coating C) Tensile strength D) Spl. Requirement

Spl. Requirement

The welding process which uses bare electrodes ------ A) MAW B) CAW C) TAW D) All

TAW

Most comfortable weld position is -------- A) Horizontal B) Flat C) Vertical D) Both A & B

Vertical

---- are called out of position welds. A) Horizontal B) Vertical C) Over head D) All

Vertical

The electrode coating that provide ionization for the arc is ----- A) Cellulose B) Clay C) Rutile D) Iron powder

Clay

The power source recommended for MIG welding ----- A) AC B) DCEP C) DCEN D) All

When very low voltage in Arc of MIG welding, the type of metal transfer is --- A) Spray B) Pulsed Spray C) Short Circuit D) Globular

Short Circuit

----- is added to electrode coatings to increase productivity. A) Clay B) Rutile C) Iron powder D) Cellulose

Cellulose

Arc Blow is a problem in ----- arc welding. A) AC B) DC C) Both AC & DC D) Constant Current

Both AC & DC

For MIG welding of Aluminium material, the shielding gas recommended is ---- A) Pure Argon B) Argon/ CO2 C) Argon/Helium D) Pure Helium

Argon/Helium

Minimum welding fumes are produced in ---- arc welding. A) MIG B) SAW C) SMAW D) TIG

SAW

The electrical resistance to molten slag causes work material melting in --- welding. A) ESW B) SAW C) MIG D) EGW

MIG

The welding process tubular electrode is used --- A) SAW B) MIG C) FCAW D) TIG

MIG

The arc welding process known as ‘dual shield’ welding, developed for structural steels ----- A) SAW B) FCAW C) MIG D) TIG

SAW

Very high thick metals joined without edge preparation in ----- welding. A) MIG B) SAW C) ESW D) EGW

ESW

Arc welding process in which parts are joined in one pass in vertical position is – A) SAW B) ESW C) EGW D) FCAW

EGW

The shielding gas in EGW is ------ A) Argon B) Helium C) Argon-Helium mixer D) CO2

CO2

Type of Tungsten electrode used for TIG welding of Aluminium is ---- A) Pure Tungsten B) Thoriated tungsten C) Zirconiated Tungsten D) All

All

Electrode material in EGW and ESW is ---- A) Tungsten B) Carbon C) Alloy Steel D) Same as work material

Tungsten

Type of Tungsten electrode used for TIG welding of Stainless Steel is ---- A) Pure Tungsten B) Thoriated tungsten C) Zirconiated Tungsten D) All

Thoriated Tungsten

Inert gas used in TIG welding of Stainless Steel is ----- A) Argon B) Helium C) Argon – Helium mix D) Argon-Hydrogen mix

Argon-Hydrogen Mix

---- is also called Arc – Atom welding. A) MIG B) AHW C) TIG C) SAW

AHW

The arc is maintained independent of workpiece in ---- welding. A) AHW B) MIG C) TIG D) SAW

AHW

AHW is replaced by --- welding. A) TIG B) ESW C) MIG D) EGW

MIG

The welding process similar to casting is ----- A) ESW B) EGW C) SAW D) Thermit welding

Thermit Welding

The welding process used in rail track repairs is ----- A) ESW B) Thermit C) SAW D) EGW

Thermit

The welding process in which no other materials like shielding gas, flu or filler rod is used ---- A) ESW B) Thermit C) Resistance D) SAW

Resistance

The main process parameters of Resistanace welding ---- A) Current B) Time C) Pressure D) All

All

In resistance spot welding the workpieces are joined by ---- joint. A) Lap B) T – Joint C) Corner D) Butt

Lap

The electrode material in resistance spot welding ---- A) Aluminium B) Copper C) Tool Steel D) Cast Iron

Copper

The welding process used for mass production work for fabrication of automobile bodies, railway coaches is ---- A) TIG B) MIG C) Spot Welding D) All

Spot Welding

Heat balance is possible in ----- welding process. A) Resistance B) TIG C) MIG D) ESW

Resistance

Hear generated in Resistance welding is given by ---- A) I R t B) R2 I t C) I2 R t D) t2 R I

I2Rt

The resistance welding which produces continuous weld bead is ---- A) Spot B) Projection C) Seam D) Flash Butt

Seam

The resistance welding process which used rotating rollers as electrodes is – A) Seam B) Spot C) Projection D) Flash Butt

Seam

The welding process in which number of weld spots on workpiece are joined at a time ---- A) Seam B) Spot C) Projection D) Flash Butt

Projection

Joining of bolts, nuts, screws to flat sheet is done in ---- resistance welding. A) Projection B) Spot C) Flash Butt D) Seam

Projection

Joining of pins ( less than 2 mm diameter) to components like resistors, capacitors is done by ---- resistance welding. A) Spot B) Seam C) Projection D) Percussion

Percussion

The resistance welding process almost similar to Flash Butt welding is ---- A) Spot B) Seam C) Upset D) Projection

Upset

The welding process which joins metals by filler metal is ---- A) Brazing B) Soldering C) Braze welding D) All

All

The melting temperature of filler metal in Brazing is ---- A) > 430 C B) < 430 C C) Equal to 430 C D) Room Temperature

> 430 C

The melting temperature of filler metal in Soldering is ---- A) > 430 C B) < 430 C C) Equal to 430 C D) Room Temperature

< 430 C

In Brazing the filler metal fills the gap between workpieces by ---- A) Capillary action B) Gravity C) Pressure D) Pulling

Capillary action

In Braze welding the filler metal fills the gap between workpieces by ---- A) Capillary action B) Gravity C) Pressure D) Pulling

Gravity

The welding process that can join different thickness materials and dissimilar metals is ----- A) Brazing B) Arc welding C) Gas welding D) All

Brazing

The filler metal in Brazing is called ---- A) Solder B) Brazer C) Spelter D) Filler

Spelter

For joining steel to Tungsten carbide in Brazing, the filler metal is ---- based filler metal. A) Nickel B) Copper C) Silver D) Aluminium

Nickel

The filler metal in Soldering is called ---- A) Solder B) Brazer C) Spelter D) Filler

Brazer

In Braze Welding the edge preparation is similar to ---- welding. A) Arc B) Resistance C) Friction D) Gas

Gas

In soldering the filler metal fills the gap between works by ----- A) Capillary action B) Gravity C) Pressure D) Pulling

Capillary action

---- flux is widely used in Soldering. A) Borax B) Rosin C) Fluorides D) Alkalis

Rosin

--- solders are widely used in electronic industries. A) Tin-Silver B) Tin – Copper C) Tin – Lead D) Tin – Nickel

Tin-Lead

No molten metal is present at the weld joint in ---- welding. A) Pressure B) Fusion C) Pressure – Fusion D) All

Pressure

Solid state bonding of metals involve ------ A) Diffusion B) Pressure C) Friction D) All

All

In Forge welding the pressure is applied by A) Hammer B) Rolls C) Dies D) All

All

Aircraft landing gears are welded by ----- welding. A) Arc B) Friction C) Forge D) All

Forge

Cold welding can be used for joining ----- metal. A) Cast Iron B) Mild Steel C) Aluminium D) Tool Steel

Aluminum

The solid state welding used for joining Refractory metals is ---- welding. A) Forge B) Friction C) Cold D) Diffusion

Diffusion

For joining tube to tube sheet in manufacture of heat exchanger ---- welding is used. A) Friction B) Explosive C) Ultrasonic D) Forge

Explosive