Related Questions

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
If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
A ARC
B Short ARC
C ARC length
D ARC blow
The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.
A 60 - 100
B 400 - 700
C 1200 -1500
D 2000 - 2300
In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as
A Fusion
B Reverse polarity
C Forward welding
D Direct polarity
The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace.
A Arc
B Resistance
C Low frequency induction
D High frequency induction
__________ furnace is not an electric furnace.
A Arc
B Induction
C Pot
D Resistance
In arc welding, the electric arc is produced between the work and the electrode by
A Voltage
B Flow of current
C Contact resistance
D All of these
In arc welding, the temperature of heat produced by the electric arc is of the order of
A 3000°C to 4000°C
B 4000°C to 5000°C
C 5000°C to 6000°C
D 6000°C to 7000°C
The refractory lining of the bottom in a basic electric arc furnace is made of
A Silica
B Alumina
C Magnesia
D Fireclay
Which of the following mainly decides the current to be employed is arc welding?
A Electrode size
B Plate thickness
C Voltage across the arc
D Welded portion length

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