Related Questions

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
Arc in a circuit breaker is interrupted at
A zero current
B maximum current
C minimum voltage
D maximum voltage
The arc voltage produced in A.C. circuit breaker is always
A In phase with the arc current
B Lagging the arc current by 90°
C Leading the arc current by 90°
D None of the above
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
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?
A 1
B 114
C 134
D 112
Air blast circuit breaker is used for
A over currents
B short duty
C intermittant duty
D repeated duty
With which of the following, a circuit breaker must be equipped for remote operation ?
A Inverse time trip
B Time-delay trip
C Shunt trip
D None of the above
E All of the above
Circuit breaker in a stock exchange works as -
A a medium to spilt stocks
B An obstacle to excessive change in share price
C A policy for broker houses
D A constraint to issue bonus shares
Circuit breaker in a stock exchange works as ----
A A medium to split stocks
B An obstacle to excessive change in share price
C A policy for broker houses
D A constrain to issue bonus shares
The use of high speed circuit breaker -
A reduces the short circuit current
B increase the short circuit current
C improves system stability
D decrease system stability

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