1KVA transformer of different frequencies of
50hz,100hz,500hz&1000hz. which one of these transformer has
big size? Give reason
Answer Posted / bhanu(secure meters ltd.)
due to some mechanical constraints, generally transformer
size is inversely proportional to the operating frequency.
thus 50 hz, transformer will have max.size.
| Is This Answer Correct ? | 18 Yes | 3 No |
Post New Answer View All Answers
Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.
Can any body tell me the different types of LT cables & their application.
Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?
If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.
To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors
Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp
how current is reverse from its normal direction during the fault?
what is JE exam?
how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???
can you please send me the technical questions and aptitude questions of honeywell and jindal steel electrical engg. question paper my e-mail ID is(kkesavanraj@gmail.com)
how wecalculate breaking capcity of acb mcb mccb .explain with example
define superposition theorem thevnin theorem ,norton theorom?
what is the function of anti pumping relays? what is KVAR? How it is generated in alternator? What is 3rd Harmonics? What is IDMT relay?
what's prime importance of protection in electrical system.if protection system don't work properly what can happen in electrical system?
how does the rotating m.m.f is produced in the 3-phase induction motor and how the poles are created in 3-phase induction motor ?