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MAN PRO > Quiz 3 > Flashcards

Quiz 3 Flashcards

1
Q

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

A

All

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2
Q

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

A

Explosive

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3
Q

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

A

Atomic Hydrogen

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4
Q

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

A

Pressure

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5
Q

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

A

MIG

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6
Q

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

A

Atomic Hydrogen

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7
Q

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

A

Pressure

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8
Q

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

A

ESW

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9
Q

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

A

SMAW

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10
Q

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

A

All

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11
Q

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

A

Acetylene

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12
Q

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

A

Oxygen

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13
Q

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

A

Acetylene

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13
Q

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

A

Black

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14
Q

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

A

Maroon

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15
Q

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

A

Acetone

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16
Q

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

A

Acetylene

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17
Q

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

A

Oxidizing

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18
Q

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

A

Constant

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19
Q

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

A

Reducing

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19
Q

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

A

Neutral

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20
Q

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

A

Carburizing

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21
Q

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

A

T-point

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21
Q

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

A

Single V-butt

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22
Q

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

A

DCEN

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22
Q

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

A

All

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22
Q

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

A

Gas Welding

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23
Q

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

A

Left hand weld

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23
Q

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

A

Thermit

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24
Q

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

A

Same as workpiece

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25
Q

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

A

DCEP

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25
Q

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

A

2/3

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26
Q

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

A

Both AC & DC

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27
Q

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

A

Constant Power

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28
Q

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

A

Both A & B

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29
Q

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

A

SMAW

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29
Q

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

A

Too small

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30
Q

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

A

All

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31
Q

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

A

Tensile strength

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31
Q

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

A

Generate shielding gas

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31
Q

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

A

Sub-Arc Welding

31
Q

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

A

Spl. Requirement

31
Q

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

A

TAW

32
Q

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

A

Vertical

32
Q

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

A

Vertical

32
Q

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

A

Clay

32
Q

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

A

AC

32
Q

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

A

Short Circuit

33
Q

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

A

Cellulose

34
Q

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

A

Both AC & DC

34
Q

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

A

Argon/Helium

35
Q

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

A

SAW

35
Q

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

A

MIG

36
Q

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

A

MIG

37
Q

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

A

SAW

38
Q

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

A

ESW

38
Q

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

A

EGW

39
Q

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

A

CO2

39
Q

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

A

All

39
Q

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

A

Tungsten

40
Q

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

A

Thoriated Tungsten

40
Q

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

A

Argon-Hydrogen Mix

41
Q

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

A

AHW

42
Q

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

A

AHW

43
Q

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

A

MIG

44
Q

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

A

Thermit Welding

45
Q

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

A

Thermit

46
Q

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

A

Resistance

46
Q

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

A

All

47
Q

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

A

Lap

47
Q

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

A

Copper

48
Q

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

A

Spot Welding

48
Q

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

A

Resistance

49
Q

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

A

I2Rt

50
Q

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

A

Seam

51
Q

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

A

Seam

52
Q

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

A

Projection

53
Q

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

A

Projection

54
Q

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

A

Percussion

55
Q

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

A

Upset

56
Q

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

A

All

57
Q

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

A

> 430 C

58
Q

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

A

< 430 C

59
Q

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

A

Capillary action

59
Q

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

A

Gravity

60
Q

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

A

Brazing

61
Q

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

A

Spelter

62
Q

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

A

Nickel

62
Q

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

A

Brazer

63
Q

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

A

Gas

63
Q

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

A

Capillary action

64
Q

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

A

Rosin

65
Q

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

A

Tin-Lead

66
Q

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

A

Pressure

67
Q

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

A

All

68
Q

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

A

All

69
Q

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

A

Forge

70
Q

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

A

Aluminum

71
Q

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

A

Diffusion

72
Q

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

A

Explosive

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