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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
Arc in a circuit breaker is interrupted at
The arc voltage produced in A.C. circuit breaker is always
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 contractor employed 30 men to do a piece of work in 38 days. After 25 days , he employed 5 men more and the work was finished one day earlier. How many days he would have been behind, if he had not employed additional men?
Air blast circuit breaker is used for
With which of the following, a circuit breaker must be equipped for remote operation ?
Circuit breaker in a stock exchange works as -
Circuit breaker in a stock exchange works as ----
The use of high speed circuit breaker -