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1. what is the power factor of a purely inductive load?
2. Which type of transformer connection is preferred in
case of power supply transformers?
3. In power transformer usually which winding is closer to
the core?
4. what will happen to the generated emf if the no. of
poles of an alternator is increased?
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Answer / narain
1. For the purely inductive circuit, the power factor is
zero, because true power equals zero. Here, the power
triangle would look like a vertical line, because the
adjacent (true power) side would have zero length.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / kaushal singh nathawat
1.lagging power factor
2.parallel connection
3.low voltage
4.generated emf will increase
| Is This Answer Correct ? | 5 Yes | 2 No |
1. In AC circuits, the power factor is the ratio of the real power that is used to do work and the apparent power that is supplied to the circuit. The power factor can get values in the range from 0 to 1. When all the power is reactive power with no real power (usually inductive load) - the power factor is 0.
2. Star Delta Connection is used in both transmission and distribution networks transformers.
3. LV winding is placed near to the core to reduce winding insulation requirements.
4. If no. Of poles increased in an alternator it's EMF generation increases, speed decreases.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / laxmidhar maharana
practically in power transformer the LV winding is placed
out side for better colling.because of high current flowing
in it.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / lakshmi
power factor is zero because angle between voltage and
current is 90 so cos(90)=0 so therfore reactive power is zero
2.power transformers are preffered
3.low tension winding is preffered because smal insultion is
required.
4.as poles increase speed decrease inturn generated emf also
decreases
| Is This Answer Correct ? | 0 Yes | 3 No |
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