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Online Electrical Engineering Test
Online Electrical Engineering Test
Transformer efficiency changes by reversing its terminals
If a step up transformer is used as a step down, will there be any change in efficiency
- 872 दृश्य
- 1 उत्तर
Materials with lots of free electrons are called
A. semiconductors B. filters C. insulators D. conductors
- 7083 दृश्य
- 40 उत्तर
in an alternater at what power factor the effect armature reaction is de-magnetizing....
A. at 0.8 p.f B. at 0.5 p.f c. at zero p.f D. at unity p.f
- 1504 दृश्य
- 2 उत्तर