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What is undercut defect in welding?
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Mar 11, 2018
by
anonymous
What is undercut defect in welding?
undercut
defect
welding
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asked
Sep 7, 2018
by
anonymous
What is mass energy equivalence? Give one example. Define mass defect and binding energy.
What is mass energy equivalence? Give one example. Define mass defect and binding energy.
Last answer:
Mass energy equivalence:- The physical principle that a measured quantity of energy is equivalent to a measured quantity of mass. The equivalence is expressed by Einstein's equation E = mc ... of energy that must be supplied to a nucleus to completely separate its nuclear articles (nucleons)
mass
energy
equivalence
defect
binding
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asked
Mar 11, 2018
by
anonymous
What are the different types of welding?
What are the different types of welding?
different
types
welding
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asked
Mar 11, 2018
by
anonymous
What are the four basic welding positions?
What are the four basic welding positions?
four
basic
welding
positions
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asked
Apr 30, 2018
by
anonymous
For arc welding current range is usually
For arc welding current range is usually (1) 10 to 15 A (2) 30 to 40 A (3) 50 to 100 A (4) 100 to 350 A
Last answer:
For arc welding current range is usually 100 to 350 A
arc
welding
current
range
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asked
Apr 30, 2018
by
anonymous
Spot welding is used for
Spot welding is used for (1) Thin metal (3) Castings only (2) Rough and irregular surface (4) Thick sections
Last answer:
Spot welding is used for Thin metal
spot
welding
used
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asked
Apr 29, 2018
by
anonymous
The supply for arc welding is :
The supply for arc welding is :
Last answer:
The supply for arc welding is : Low voltage, high current ac or dc voltage
supply
arc
welding
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asked
Apr 30, 2018
by
anonymous
Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :
Identify the correct combination of respective Electric arc welding and Electric resistance welding methods : (A) Butt welding and Seam welding (B) Hydrogen shielding and Projection welding (C) Seam welding and Coated electrode welding (D) Coated electrode welding and Hydrogen shielding
Last answer:
Identify the correct combination of respective Electric arc welding and Electric resistance welding methods : (A) Butt welding and Seam welding (B) Hydrogen shielding and Projection welding ... Seam welding and Coated electrode welding (D) Coated electrode welding and Hydrogen shielding
electric
arc
welding
resistance
methods
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asked
Apr 29, 2018
by
anonymous
The electrode rod used for welding uses a coating on it
The electrode rod used for welding uses a coating on it
Last answer:
The electrode rod used for welding uses a coating on it to give a vapour to serve as a shielding gas to protect the weld area from atmospheric contamination and to provide slag to protect the welded area
electrode
rod
used
welding
uses
coating
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asked
Jan 3
by
anonymous
Explain with sketch electron beam welding.
Explain with sketch electron beam welding.
Last answer:
Electron Beam Welding Process In EBW process, the heat is generated when the electron beam impinges on work piece. As the high velocity electron beam strikes the surfaces to be welded, their kinetic ... material that is directly in the path is melted which when solidifies form the joint.
electron
beam
welding
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1
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asked
Jan 2
by
anonymous
State the four advantages of MIG welding.
State the four advantages of MIG welding.
Last answer:
Four advantages of MIG welding: 1. High quality welds can be produced much faster. 2. Flux is not used there is no chance for the entrapment of slag in the weld metal resulting in high quality ... of metals and alloys. 5. Least expensive and highly economic. 6. Little or no post welds cleaning.
advantages
mig
welding
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asked
May 22, 2020
by
anonymous
List two special feature of welding transformer.
List two special feature of welding transformer.
Last answer:
Special features of welding transformer: i) It is a step down transformer that reduces the source voltage to a voltage desired according to the demands of the welding process. ii) Having large primary turns and less ... V ii) Secondary voltage - 40 to 60 V iii) Secondary current - 200 to 600 A
special
feature
welding
transformer
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asked
May 7, 2020
by
anonymous
Welding Defects
Welding Defects
Last answer:
Welding Defects Welding defects Explanation and causes 1. Cracks Cracks occur when localized stresses exceed the ultimate tensile strength of material. These stresses are developed due to shrinkage ... Too fast a travel, Bad welding technique, Too great a heat build-up.
welding
defects
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asked
May 7, 2020
by
anonymous
State the applications of TIG welding.
State the applications of TIG welding.
Last answer:
The applications of TIG welding are as follows: 1. Mostly used to weld aluminum and aluminum alloys. 2. It is used to weld stainless steel, carbon base alloy, copper base alloy, nickel base alloy etc. 3. It is used to welding dissimilar metals. 4. It is mostly used in aerospace industries.
state
the
applications
of
tig
welding
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asked
Jul 30, 2019
by
anonymous
Describe with a neat diagram, the process of any one type of electric welding.
Describe with a neat diagram, the process of any one type of electric welding.
Last answer:
Methods of electric welding : 1. Resistance welding i Butt welding ii Spot welding iii Seam welding iv Projection welding 2. Arc Welding i Carbon arc welding ii ... as copper, iron etc. The electric arc effectively concentrate heat on the surfaces it is desired to join.
electric
welding
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asked
Oct 12, 2018
by
anonymous
Compare between Resistance welding and Arc welding on any six points.
Compare between Resistance welding and Arc welding on any six points.
Last answer:
Sr.No Parameters Resistance Welding Arc Welding 1 Type of welding Plastic/Pressure/Non-fusion welding Fusion/Non pressure welding 2 Principle of heat developed Heat ... It is suitable for mass production It is suitable for heavy job, maintenance and repair work
compare
resistance
welding
arc
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asked
Mar 20, 2018
by
anonymous
Welding generator will have?
Last answer:
Welding generator will have lap winding.
welding
generator
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asked
Mar 31, 2018
by
anonymous
Arc blow is a welding defect which is encountered in _________.
Last answer:
Arc blow is a welding defect which is encountered in arc welding using a.c. current.
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asked
May 13, 2018
by
anonymous
In which of the following welding methods, the molten metal is poured for joining the metals ?
In which of the following welding methods, the molten metal is poured for joining the metals ? (a) Gas welding (b) Thermit welding (c) TIG welding (d) Arc welding
Last answer:
In which of the following welding methods, the molten metal is poured for joining the metals ? (a) Gas welding (b) Thermit welding (c) TIG welding (d) Arc welding
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1
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asked
May 17, 2018
by
anonymous
The commonly used gases in tungsten arc welding are
The commonly used gases in tungsten arc welding are 1.Hydrogen and oxygen 2.Hydrogen and organ 3.Hydrogen and helium 4.Helium and argon
Last answer:
The commonly used gases in tungsten arc welding are Helium and argon
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asked
May 20, 2018
by
anonymous
Electric welding equipment works best at
Electric welding equipment works best at A) Low voltage and low current B) Low Voltage and high current C) High voltage and low current D) High voltage and high current
Last answer:
Electric welding equipment works best at Low Voltage and high current
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1
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asked
Apr 25, 2018
by
anonymous
What type of defect causes F -centers in a crystal ?
What type of defect causes F -centers in a crystal ? (a) Stoichiometric defect (b) Metal excess defect due to anion vacancies (c) Metal excess defect due to extra cations (d) Frenkel defect
Last answer:
Metal excess defect due to anion vacancies
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1
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asked
May 17, 2018
by
anonymous
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as 1. Shift 2. Sand wash 3. Swell 4. Scab
Last answer:
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as Sand wash
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1
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asked
Mar 20, 2018
by
anonymous
If a single phase induction motor runs slower than normal, the most likely defect is?
Last answer:
If a single phase induction motor runs slower than normal, the most likely defect is worn bearings.
single
phase
induction
motor
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109
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1
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asked
6 days
ago
by
anonymous
Which one of the following lenses should be used to correct the defect of astigmatism ? (1) Cylindrical lens (2) Concave lens (3) Convex lens (4) Bifocal lens
Which one of the following lenses should be used to correct the defect of astigmatism ? (1) Cylindrical lens (2) Concave lens (3) Convex lens (4) Bifocal lens
Last answer:
Cylindrical lens
physics
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asked
Jan 5
by
anonymous
Define Defect.
Define Defect.
Last answer:
It refers to the several troubles with the software product, with its external behavior or its internal features. OR A defect is an error in coding that causes a program to fail or to produce incorrect /unexpected results.
software
testing
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asked
Sep 2, 2018
by
anonymous
Give meaning of the term defect. State effects of it. Also give classification of it and methods to eliminate them.
Give meaning of the term defect. State effects of it. Also give classification of it and methods to eliminate them.
Last answer:
Ans: Defect - Failure in a general sense can be regarded as a defect Effects of Defect -Defect results in the reduction of speed or load capacity of the locomotive or which detables the ... taken by manufacturer Defects(2) and (3) can be minimised by restoring to the ideal maintenance practice
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42
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1
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asked
Mar 11, 2018
by
anonymous
What is locomotive force?
What is locomotive force?
locomotive
force
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50
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0
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asked
Mar 11, 2018
by
anonymous
What is the main purpose of electroplating?
What is the main purpose of electroplating?
Last answer:
Protecting reactive metals from corrosion.
main
purpose
electroplating
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93
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1
answer
asked
Mar 11, 2018
by
anonymous
What is vertical sag?
What is vertical sag?
vertical
sag
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54
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0
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asked
Mar 11, 2018
by
anonymous
What is a conveyor motor?
What is a conveyor motor?
Last answer:
Motors used to run conveyor belts.
conveyor
motor
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1
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asked
Mar 11, 2018
by
anonymous
What is the traction system?
What is the traction system?
traction
system
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0
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asked
Mar 11, 2018
by
anonymous
What is the difference between an insulator and a dielectric?
What is the difference between an insulator and a dielectric?
Last answer:
Dielectric is the another name for insulator.
difference
between
insulator
dielectric
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1
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asked
Mar 11, 2018
by
anonymous
What is meant by resistance heating?
What is meant by resistance heating?
resistance
heating
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0
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asked
Mar 11, 2018
by
anonymous
What is meant by dielectric heating?
What is meant by dielectric heating?
dielectric
heating
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asked
3 days
ago
by
anonymous
In arc welding, Argon is used because of its (1) Low reactivity with metal (2) Ability to lower the melting point of the metal (3) High flammability (4) High calorific value
In arc welding, Argon is used because of its (1) Low reactivity with metal (2) Ability to lower the melting point of the metal (3) High flammability (4) High calorific value
Last answer:
Low reactivity with metal
chemistry
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asked
4 days
ago
by
anonymous
Which of the following is used in welding broken pieces of iron rails and machine parts? (1) Aluminium sulphate (2) Solder (3) Aluminium powder (4) None of the above
Which of the following is used in welding broken pieces of iron rails and machine parts? (1) Aluminium sulphate (2) Solder (3) Aluminium powder (4) None of the above
Last answer:
Aluminium powder
chemistry
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3
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1
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asked
Apr 10, 2018
by
anonymous
In spot welding, electric supply used is
In spot welding, electric supply used is (a) low voltage high current (b) high voltage low current (c) low voltage low current (d) high voltage high current
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56
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0
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asked
Mar 11, 2018
by
anonymous
What are the applications of electroplating?
What are the applications of electroplating?
applications
electroplating
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372
views
0
answers
asked
Mar 11, 2018
by
anonymous
What are the industrial application of electrolysis?
What are the industrial application of electrolysis?
industrial
application
electrolysis
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78
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0
answers
asked
Mar 29, 2018
by
anonymous
In resistance welding the electrodes used are of
Last answer:
In resistance welding the electrodes used are of Non – Consumable type
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1
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asked
May 25, 2018
by
anonymous
In practice generative breaking is used when
In practice generative breaking is used when (a) quick motor reversal is desired. (b) load has overhauling characteristic (c) controlling elevators, rolling mills etc. (d) none of these
Last answer:
Controlling elevator , rolling mill because to stop motor some backward force required
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69
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1
answer
asked
May 13, 2018
by
anonymous
In an electric press, mica is used
In an electric press, mica is used (a) As an insulator (b) As a device for power factor improvement (c) For dielectric heating (d) For induction heating
Last answer:
In an electric press, mica is used As an insulator
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76
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1
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asked
May 1, 2018
by
anonymous
Power in the wind is proportional to
Power in the wind is proportional to
Last answer:
Power in the wind is proportional to (Wind velocity)3
power
wind
proportional
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68
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1
answer
asked
Apr 29, 2018
by
anonymous
The arc voltage in a circuit breaker is :
The arc voltage in a circuit breaker is :
Last answer:
The arc voltage in a circuit breaker is : in phase with the arc current
arc
voltage
circuit
breaker
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70
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1
answer
asked
Apr 29, 2018
by
anonymous
The range of frequencies used in induction heating is :
The range of frequencies used in induction heating is : (A) 0-25 Hz (C) less than 200 Hz (B) 50 to 100 Hz (D) more than 1 kHz
Last answer:
The range of frequencies used in induction heating is : more than 1 kHz
range
frequencies
used
induction
heating
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73
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1
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asked
Mar 22, 2018
by
anonymous
The rate of acceleration on suburban or urban service is in the range?
Last answer:
The rate of acceleration on suburban or urban service is in the range 1.6 to 4.0 km phps.
rate
acceleration
suburban
urban
service
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1
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asked
Mar 22, 2018
by
anonymous
The braking retardation is usually in the range?
Last answer:
The braking retardation is usually in the range 10 to 15 km phps.
braking
retardation
usually
range
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204
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1
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asked
Mar 22, 2018
by
anonymous
In case of a steam engine an average coal consumption per km is nearly?
Last answer:
In case of a steam engine an average coal consumption per km is nearly 28 to 30 kg.
steam
engine
average
coal
consumption
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74
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1
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asked
Mar 22, 2018
by
anonymous
Power for lighting in passanger coach, in a long distance electric train, is provided?
Last answer:
Power for lighting in passanger coach, in a long distance electric train, is provided through individual generator of bogie and batteries.
power
lighting
passanger
coach
long
distance
electric
train
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73
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1
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asked
Mar 22, 2018
by
anonymous
Specific energy consumption is least in _______ service.
Last answer:
Specific energy consumption is least in main line service.
specific
energy
consumption
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