Related Questions

তড়িৎদ্বার দুটির বিজারণ বিভব যথাক্রমে -0.76 V এবং +0.80 V । এই তড়িৎদ্বার দুটি দ্বারা তৈরি কোষের মোট বিভব কত? (The reduction potentials of two electrodes same are -0.76 V and +0.80 V, respectively. what is the EMF of a cell constructed using these two electrodes?)
A -0.04 V
B +0.04 V
C -1.56 V
D +1.56 V
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
Which of the following electrodes is used in strongly alkaline solution?
A Mercury - mercuric oxide electrode
B Mercury - mercurous sulphate electrode
C Mercury - mercurous chloride electrode
D Silver - silver chloride electrode
Which of the following pairs of materials serves as electrodes in rechargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ?
A Iron and cadmium
B Nickel and cadmium
C Lead peroxide and lead
D Zinc and carbon
The electrodes used in spot welding have a tip of
A Stainless steel
B Aluminium
C Copper
D Brass
In TIG welding, thoriated tungsten electrodes are used, because it
A Has higher current carraying capacity
B Has better electron emissivity
C Is stronger than ordinary tungsten
D Is easy to prepare
Consumable electrodes are used in the __________ welding.
A Gas
B Arc
C Thermit
D Resistance
Which of the following arc welding processes does not use consumable electrodes?
A GMAW
B GTAW
C Submerged Arc Welding
D None of these
In a mercury pool rectifier, the voltage drop across its electrodes
A is directly proportional to load
B is inversely proportional to load
C varies exponentially with the load current
D is almost independent of load current
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

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