KSEB- Sub Engineer

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#1. Number of slip rings used in a 3 phase synchronous motor ill be....?

#2. Hunting is prevented by 3 phase synchronous motor by.....?

#3. The usual value of slip of a 3 phase induction motor at stand still condition is about....?

#4. Graphite is used for in nuclear power plant as a....?

#5. The highest transmission voltage in kerala....?

#6. Ferranti effect on long over head line is experienced when it is.....?

#7. The voltage of a particular bus can be controlled by controlling the....?

#8. The insulation resistance of a cable of length 20 km is 1m, its insulation resistance of 100 km length is...?

#9. The buchholz relay is used for the protection of.....?

#10. An alternator generates an emf of 50 Hz at a speed of 1000 rpm. The number of poles on the generator is....?

N=120f/p

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