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
by

1 Answer

Answer :

Electric welding equipment works best at Low Voltage and high current 

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Related questions

Identify the correct combination of respective Electric arc welding and Electric resistance welding methods :

Description : 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

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The commonly used gases in tungsten arc welding are

Description : 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

In which of the following welding methods, the molten metal is poured for joining the metals ?

Description : 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 

For arc welding current range is usually

Description : 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

Spot welding is used for

Description : 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

The electrode rod used for welding uses a coating on it

Description : 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

The supply for arc welding is :

Description : The supply for arc welding is : 

Last Answer : The supply for arc welding is : Low voltage, high current ac or dc voltage

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Description : 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

The motor used for electric traction is

Description : The motor used for electric traction is  (1) D.C. shunt motor (3) D.C. series motor  (2) D.C. compound motor (4) Synchronous motor

Last Answer : The motor used for electric traction is D.C. series motor

Choose the correct order of electric discharge lamps in their increasing order of efficiencies (lumens/watt) :

Description : Choose the correct order of electric discharge lamps in their increasing order of efficiencies (lumens/watt) :  (A) Sodium vapour lamp, Mercury vapour lamp, Neon lamp  (B) Neon lamp, Sodium vapour ... Mercury vapour lamp, Sodium vapour lamp  (D) Mercury vapour lamp, Sodium vapour lamp, Neon lamp

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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.

In a steam locomotive electric power is provided through?

Last Answer : In a steam locomotive electric power is provided through small turbo-generator.

Do electric trains have gears?

Description : Do electric trains have gears?

Last Answer : Electric  trains  have  gears  for  speed  variation. This  is  because  it  is  not  easy  to  run  a  motor  at  diffrent  speed  of your  choice.

How does electric locomotive work?

Description : How does electric locomotive work?

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What type of arc welding equipment is necessary when participating in arc welding?

Description : What type of arc welding equipment is necessary when participating in arc welding?

Last Answer : The most important equipment you can have is your safety equipment, your gloves, visor and heavy-duty clothing. You have to have some sort of a power source to generate the electricity necessary for arc welding, so I'd say a power source is your most important arc welding equipment.

What type of safety protection do you need for standard welding equipment?

Description : What type of safety protection do you need for standard welding equipment?

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Which of the following would not be required to be checked before welding? a) The welding consumables b) The welder qualification c) Calibration of the welding equipment d) The workshop humidity

Description : Which of the following would not be required to be checked before welding? a) The welding consumables b) The welder qualification c) Calibration of the welding equipment d) The workshop humidity

Last Answer : d) The workshop humidity

Which of the following statements concerning electrical cables is correct? A. Where they pass through watertight bulkheads, they should be fitted with watertight stuffing boxes. B. Electric cable coverings should never be grounded. C. Electrical cables must be rigidly held in place by welding of armored cable, or glued in place where nonmetallic insulation is used. D. All of the above.

Description : Which of the following statements concerning electrical cables is correct? A. Where they pass through watertight bulkheads, they should be fitted with watertight stuffing boxes. B. Electric cable coverings should ... , or glued in place where nonmetallic insulation is used. D. All of the above.

Last Answer : Answer: A

Projection welding is (i) Electric arc welding (ii) Gas welding (iii)Spot welding (iv) None

Description : Projection welding is (i) Electric arc welding (ii) Gas welding (iii)Spot welding (iv) None

Last Answer : (iv) None

Which type of welding is generally used in automobile sector? a) Electric arc welding b) Electric resistance welding c) Gas welding d) Forge welding

Description : Which type of welding is generally used in automobile sector? a) Electric arc welding b) Electric resistance welding c) Gas welding d) Forge welding

Last Answer : b) Electric resistance welding

Filler material is used in electric resistance welding. a) Yes b) No filler material used c) Depends on the type of welding d) None of the listed

Description : Filler material is used in electric resistance welding. a) Yes b) No filler material used c) Depends on the type of welding d) None of the listed

Last Answer : b) No filler material used

Among gas and electric arc welding, which has the higher rate of heating? a) Gas welding b) Electric arc welding c) Gas welding and electric arc welding have equal rate of heating d) Cannot be determined

Description : Among gas and electric arc welding, which has the higher rate of heating? a) Gas welding b) Electric arc welding c) Gas welding and electric arc welding have equal rate of heating d) Cannot be determined

Last Answer : b) Electric arc welding

Rails in the field are generally welded by using a) Thermit welding b) Gas welding c) Electric arc welding d) Forge welding

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Last Answer : a) Thermit welding

The electric arc welding is a type of ............. welding. (a) forge (b) fusion

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Last Answer : Option C

Electric resistance seam welding uses __________ electrodes. (A) Pointed (B) Disc. (C) Flat (D) Domed

Description : Electric resistance seam welding uses __________ electrodes. (A) Pointed (B) Disc. (C) Flat (D) Domed

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Description : State working principle of electric welding. 

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Description : 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.

Arc welding uses following electric supply

Description : Arc welding uses following electric supply (A) ac (B) dc (C) both ac and dc (D) spiral waveform 

Last Answer : both ac and dc

Electric resistance seam welding uses_______ electrodes.

Description : Electric resistance seam welding uses_______ electrodes.(A) pointed (B) disc (C) flat (D) domed

Last Answer : Electric resistance seam welding uses disc electrodes.

which brand of darkroom equipment works best?

Description : which brand of darkroom equipment works best?

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lumen / watt is the unit of:

Description :  lumen / watt is the unit of: A) light flux B) luminous intensity C) brightness D) luminous efficiency

Last Answer : luminous efficiency

Which braking system on the locomotives is the costliest among the following?

Description :  Which braking system on the locomotives is the costliest among the following? A) Vacuum braking on diesel locomotives B) Vacuum braking on steam locomotives C) Regenerative braking on electric locomotives D) All braking systems are equally costly

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Power-factor of industrial arc and induction furnace is:

Description : Power-factor of industrial arc and induction furnace is:

Last Answer : Power-factor of industrial arc and induction furnace is: very low lagging

For induction heating, which of the following is abnormally high?

Description : For induction heating, which of the following is abnormally high?  A)Voltage B) Current C) Frequency D) Phase angle

Last Answer : For induction heating, which of the following is abnormally high?  A)Voltage B) Current C) Frequency D) Phase angle

Dielectric heating is used for heating

Description : Dielectric heating is used for heating  A) Wood B)Aluminium C) Magnetic steel D) Copper

Last Answer : Dielectric heating is used for heating Wood 

Tractive effort acts

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Last Answer : Tractive effort acts Tangential to the driving wheel

Water break test is used to

Description : Water break test is used to

Last Answer : Water break test is used to Verify Cleanliness of surfaces

In an electroplating solution anions are

Description : In an electroplating solution anions are

Last Answer : In an electroplating solution anions are Negatively charged

Gray iron is usually welded by

Description : Gray iron is usually welded by   (a) Gas welding (b) TIG welding (c) MIG welding (d) Arc welding 

Last Answer : Gray iron is usually welded by Gas welding

The flicker effect of fluorescent lamps is more pronounced at

Description :  The flicker effect of fluorescent lamps is more pronounced at   (a) Lower frequencies (b) Higher frequencies (c) Lower voltage (d) Higher voltages  

Last Answer : Lower frequencies

Change in the frequency of supply does not affect the

Description : Change in the frequency of supply does not affect the   (a) Dielectric heating (b) Electrical resistance heating (c) Induction heating (d) Microwave heating 

Last Answer : Change in the frequency of supply does not affect the Electrical resistance heating 

Which of the following lamp light output is comparable with that of day light?

Description : Which of the following lamp light output is comparable with that of day light?  (a) Fluorescent lamp (b) Sodium vapour lamp (c) Mercury vapour lamp (d) Halogen lamp 

Last Answer : Sodium  vapout  lamp

In HPSV lamps, traces of neon gas

Description :  In HPSV lamps, traces of neon gas   (a) Helps in stabilizing the arc (b) Changes the colour of light (c) Prevents the vaporization of filament (d) Assists during starting to develop enough heat to vaporize sodium

Last Answer :  In HPSV lamps, traces of neon gas Assists during starting to develop enough heat to vaporize sodium

The coefficient of adhesion is

Description : The coefficient of adhesion is  (a) Zero in traction systems (b) Low in case of AC traction high in DC traction (c) High in AC traction low in case of DC traction (d) Same on AC and DC traction systems

Last Answer : The coefficient of adhesion is High in AC traction low in case of DC traction 

The average speed of a train is independent of

Description : The average speed of a train is independent of   (a) Duration of steps (b) Acceleration and braking retardation (c) Distance between stops (d) Running time

Last Answer : The average speed of a train is independent of Duration of steps

Power in the wind is proportional to

Description : Power in the wind is proportional to

Last Answer : Power in the wind is proportional to (Wind velocity)3

Arc resistance

Description : Arc resistance  (1) increases with increase in arc current (2) decrease with increase in arc current (3) is independent of arc current (4) is independent of arc length

Last Answer : Arc resistance decrease with increase in arc current 

A thyrite type lightening arrester :

Description : A thyrite type lightening arrester :

Last Answer : A thyrite type lightning arrester : offers low resistance path to surge currents