Physics
What are the particles emitted by radioactive element after 3 consecutive disintegration?

1 alpha 1 beta
2 beta 2 alpha
2 beta 1 alpha
2 alpha 1 beta

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Physics
Circuit breaker usually operate under

Sub-transient state of short-circuit current
After D. C. component has ceased
Steady state of short-circuit current
Transient state of short-circuit current

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