In resistance welding the electrodes used are of

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Answer :

In resistance welding the electrodes used are of Non – Consumable type

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In electrical resistance welding, distortion results from the use of improper (A) Clamping methods (B) Electrodes (C) Current (D) Filler material

Description : In electrical resistance welding, distortion results from the use of improper (A) Clamping methods (B) Electrodes (C) Current (D) Filler material

Last Answer : (A) Clamping methods

Consumable electrodes are used in the __________ welding. (A) Gas (B) Arc (C) Thermit (D) Resistance

Description : Consumable electrodes are used in the __________ welding. (A) Gas (B) Arc (C) Thermit (D) Resistance

Last Answer : (B) Arc

Pick out the wrong statement. (A) Seam welding, projection welding & spot welding are the classification of electrical resistance welding (B) Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded) (C) In spot welding, two pieces to be joined are overlapped and placed between two electrodes (D) Mild steel sheet cannot be spot welded

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Last Answer : (D) Mild steel sheet cannot be spot welded

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

Last Answer : Ans: B Disc type electrodes are used for electric resistance seam welding.

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.

Coating provided on the electrodes used in the arc welding is not expected to (A) Add alloying elements (B) Prevent electrode from contamination (C) Stabilise the arc (D) Provide protective atmosphere to weld

Description : Coating provided on the electrodes used in the arc welding is not expected to (A) Add alloying elements (B) Prevent electrode from contamination (C) Stabilise the arc (D) Provide protective atmosphere to weld

Last Answer : (B) Prevent electrode from contamination

TIG welding, thoriated tungsten electrodes are used, because it (A) Has higher current carrying capacity (B) Has better electron emissivity (C) Is stronger than ordinary tungsten (D) Is easy to prepare

Description : TIG welding, thoriated tungsten electrodes are used, because it (A) Has higher current carrying capacity (B) Has better electron emissivity (C) Is stronger than ordinary tungsten (D) Is easy to prepare

Last Answer : Option B

When welding medium carbon steel plates over 100mm in thickness would the basic electrodes require any pre treatment before use? a) None if they were in a vacuum pack opened 8 hours prior to use b) None if they were in a sealed vacuum pack prior to use c) Heat to 500 °C for 2 hours if used outside d) Baked at 150°C for 4hours prior to use

Description : When welding medium carbon steel plates over 100mm in thickness would the basic electrodes require any pre treatment before use? a) None if they were in a vacuum pack opened 8 hours prior to use b) None if ... ) Heat to 500 °C for 2 hours if used outside d) Baked at 150°C for 4hours prior to use

Last Answer : b) None if they were in a sealed vacuum pack prior to use

Why it is sometimes necessary to preheat the base material before welding? a) To remove oil and grease b) To remove moisture from inside the material c) To prevent the possible risk of cracking d) Not required if using cellulosic electrodes as these will provide enough heat

Description : Why it is sometimes necessary to preheat the base material before welding? a) To remove oil and grease b) To remove moisture from inside the material c) To prevent the possible risk of cracking d) Not required if using cellulosic electrodes as these will provide enough heat

Last Answer : c) To prevent the possible risk of cracking

Which electrodes to choose for a welding inverter?

Description : Which electrodes to choose for a welding inverter?

Last Answer : Despite the seeming difficulty in use, the welding machine has found application not only in production, but also in the household. Of course, owners of private households use it more often ... to purchase electrodes in the construction markets; it is better to contact a specialized store.

The resistance furnace produces heat by the (A) Electric arc struck between electrodes and the charge (B) Flow of current through a heating element (C) Combination of induced current and skin effect (D) None of these

Description : The resistance furnace produces heat by the (A) Electric arc struck between electrodes and the charge (B) Flow of current through a heating element (C) Combination of induced current and skin effect (D) None of these

Last Answer : (B) Flow of current through a heating element

An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace. (A) Resistance (B) Arc (C) Low frequency induction (D) None of these

Description : An electric furnace producing heat by means of an electric arc struck between each of three electrodes and the charge is called __________ furnace. (A) Resistance (B) Arc (C) Low frequency induction (D) None of these

Last Answer : (B) Arc

When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are

Description : When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are

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Brine is electrolysed by using inert electrodes. The reaction at anode is_______

Description : Brine is electrolysed by using inert electrodes. The reaction at anode is_______

Last Answer : Brine is electrolysed by using inert electrodes. The reaction at anode is_______ A. `Cl^(-)(aq.)rarr(1)/(2)Cl_(2) ... )H_(2)(g),E_("cell")^(o.)=0.00V`

When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are :

Description : When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are :

Last Answer : When the sample of Cu with Zn as impurity is to be purified by electrolysis, the appropriate electrodes are ... 4)","Impure zinc","Impure sample"):}`

Brine is electrolysed by using inert electrodes. The reaction at anode is_______

Description : Brine is electrolysed by using inert electrodes. The reaction at anode is_______

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In what situation might in be better to position the electrodes on the upper arm and the thighs rather than lower on the arms and legs?

Description : In what situation might in be better to position the electrodes on the upper arm and the thighs rather than lower on the arms and legs?

Last Answer : Need answer

What are the half-reactions for galvanic cell with Ni and Mg electrodes?

Description : What are the half-reactions for galvanic cell with Ni and Mg electrodes?

Last Answer : Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-

What is oxidized in galvanic cell made with silver and nickel electrodes?

Description : What is oxidized in galvanic cell made with silver and nickel electrodes?

Last Answer : The nickel metal(apex)

How to detect damp electrodes?

Description : How to detect damp electrodes?

Last Answer : Pre dry unusually damp electrodes for 30 - 45 minutes before final drying to minimize cracking of the coating that format.

What is the voltage of an electrolytic cell copper and magnesium electrodes?

Description : What is the voltage of an electrolytic cell copper and magnesium electrodes?

Last Answer : -2.71 V

The movement of charged particles towards one of the electrodes under the influence of electrical current is (A) Gel filtration (B) Molecular sieving (C) Gas liquid chromatography (D) Electrophoresis

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Last Answer : Answer : D

Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at eathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at eathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Last Answer : (1) Copper at eathode and oxygen at anode. Explanation: Copper is deposited at the cathode and is dissolved at the anode. Consequently the concentration of copper ions in solution remains constant. This can be used as a method of purification of copper as only pure copper is deposited at the cathode

Whic of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc.? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon

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Substance used for making electrodes is?

Description : Substance used for making electrodes is?

Last Answer : Graphite

Spark plugs, ignition tubes and electrodes are made of nickel __________ alloys. (A) Beryllium (B) Manganese (C) Copper (D) Iron

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Description : What maintenance of earth electrodes should be done?

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What is gap between the electrodes in transformer oil testing kit?

Description : What is gap between the electrodes in transformer oil testing kit?

Last Answer : 0.1 Inch.

A squid axon is placed on stimulating electrodes, and an intracellular electrode is inserted and connected through a cathode-ray oscilloscope (CRO) to an indifferent electrode. When the axon is stimulated, the latent period is 1.5 ms. The intracellular electrode is 6 cm form the anode of the simulator and 4.5 cm from the cathode of the simulator. What is the conduction velocity of the axon. a. 15 m/s b. 30 m/s c. 40 m/s d. 67.5 m/s e. This cannot be determined from the information given

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Naphthalene recovered from coke oven gas is used (A) As moisture proof coating on fibres(B) As moth balls (insecticides)(C) As a fuel in furnaces(D) For making electrodes

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Last Answer : (D) All (A), (B) and (C)

Ionisation potential applied across the electrodes of electrostatic tar precipitator is around (A) 230 V AC (B) 60 KV AC (C) 230 V DC (D) 60 KV DC

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Coal tar is used as a (A) Binding material for coal briquettes (B) Fuel in rotary kiln (C) Binder in making carbon electrodes (D) All (A), (B) and (C)

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The emf of a Deniell cell “Zn | Zn2+|| Cu2+| Cu” can be increased by (A) Decreasing the surface area of the electrodes (B) Increasing the concentration of zinc sulphate solution (C) Increasing the surface area of the electrodes (D) Increasing the concentration of copper sulphate solution

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Last Answer : (D) Increasing the concentration of copper sulphate solution

Circuit breakers are essentially (a) current carrying contacts called electrodes (b) arc extinguishers (c) circuits to break the system (d) transformers to isolate the two systems (e) any of the above

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Q-9 how many electrodes are used in the TANDEM SAW? What is the polarity of the both electrode?

Description : Q-9 how many electrodes are used in the TANDEM SAW? What is the polarity of the both electrode?

Last Answer : In TANDEM SAW process there are more than one electrode is used. But for first electrode alternative current and for second electrode direct current shall be used.

belt of silk runs over two metal pulleys, one of which is surrounded by a hollow metal sphere. Two electrodes, in the form of comb-shaped rows of sharp metal points, are positioned respectively near to the bottom of the lower pulley and inside the sphere, over the upper pulley. The top electrode is connected to the sphere and the bottom one to the ground. A high DC potential is applied to the upper pulley. A simple version of which equipment is being described here?

Description : belt of silk runs over two metal pulleys, one of which is surrounded by a hollow metal sphere. Two electrodes, in the form of comb-shaped rows of sharp metal points, are positioned ... potential is applied to the upper pulley. A simple version of which equipment is being described here?

Last Answer : Van de Graaff generator.

Why are Cs and K used as electrodes in photoelectric cells?

Description : Why are Cs and K used as electrodes in photoelectric cells? 

Last Answer : The alkali metal atoms have the largest sizes in a particular period of the periodic table. With This property makes caesium and potassium useful as electrodes in photoelectric cells.

Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at cathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Description : Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives (1) Copper at cathode and oxygen at anode. (2) Copper at anode and oxygen at cathode. (3) Copper at cathode and anodes dissolve to give copper. (4) Hydrogen at cathode and oxygen at anode.

Last Answer : Copper at cathode and oxygen at anode.

Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon

Description : Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon

Last Answer : Nickel and cadmium

Among the voltages to various electrodes in a CRT the voltage is the highest on

Last Answer : Among the voltages to various electrodes in a CRT the voltage is the highest on PD anode.

How many types and what are resistance welding ?

Description : How many types and what are resistance welding ?

Last Answer : There are six main types of resistance welding. Namely - 1. Spot Welding _ Seam Welding 3 . Projection Welding 4. Flash Welding 5. Upset Welding 7 . Percussion Welding

What is resistance welding ?

Description : What is resistance welding ?

Last Answer : Answer : Resistance welding is the process of converting electrical energy into thermal energy in electric welding .

During its operation, loud buzzing and resultant welding of contacts of a magnetic relay may be caused by __________. A. overheating of the contactor coil B. low voltage on the operating coil C. low insulation resistance to ground D. lubrication of the contact bearing points

Description : During its operation, loud buzzing and resultant welding of contacts of a magnetic relay may be caused by __________. A. overheating of the contactor coil B. low voltage on the operating coil C. low insulation resistance to ground D. lubrication of the contact bearing points

Last Answer : Answer: B

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

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Last Answer : b) No filler material used

Projection welding & stud welding is categorised as the __________ welding. (A) Pressure (B) Thermit (C) Resistance (D) Arc

Description : Projection welding & stud welding is categorised as the __________ welding. (A) Pressure (B) Thermit (C) Resistance (D) Arc

Last Answer : C) Resistance

Chromium molybdenum steel cannot be welded using __________ welding. (A) Thermit (B) Electrical resistance (C) Oxy-acetylene (D) Any of these

Description : Chromium molybdenum steel cannot be welded using __________ welding. (A) Thermit (B) Electrical resistance (C) Oxy-acetylene (D) Any of these

Last Answer : Option B