Why generally the transformer primary is connected in star & secondary in delta

7 Answers  

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HOw can we calculate power factor at HT side.

6 Answers  

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Is phase preventer require when overload relay is there

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Which of the following statements is incorrect?(a) 1N = 1 kgm/s2(b) 1V = 1 J/C(c) 30mA = 0.03A(d) 1 J = 1N/m

1 Answers  

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why we increase the small speed of turbine when alternator just synchronized to grid in steam power plant

2 Answers   PSEB,

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why we get 2 differnet values for power factor in 2 watt meter method in 3 phase

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two way ckt diagram can be drawn by how many ways? give diagram

0 Answers  

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hi frienda We have 250kva cater pillet dg set we are fasing one diffrent proublam in dg we are start dg set after one mint applying load around 450a load but dg was run 3 Or 4 mints after 3 mints dg was shuding down automatic how to face this proublam pls tel any budy

2 Answers  

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i heard that power factor(PF) is the main concern for industries, if they are maintaining PF around 0.6 they will be fined for that. now the question is, how can they improve the PF ranging between 0.9 to 0.95 which is safe for them i,e escaping from the fine?

5 Answers  

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why we are called the 4-20ma transducer,not 0-20 ma transducer??

3 Answers  

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why ac current do not save

3 Answers  

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How can the direction of a three phase induction motor be reserved

4 Answers  

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