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Topic :: Transformer
A T-T transformer can not be parallel with transformer A V-V B star-delta C star-star D delta-delta
1 6426In power transformer tappings are provided on A high voltage side B low voltage side C In middle of both the windings D both high and low voltage side
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2 5272Main advantage of auto transformer over two windings transformer is that A it needs no cooling B it uses only one winding C core losses are reduced D it has simple construction
2883Material commonly used in making transformer core is A cast iron B mild steel C high silicom steel D high carbon steel
1 3447Short circuit voltage of a transformer mainly depend on A ohmic resistance of primary B ohmic resistance of secondary C magnitude of leakage flux D cross sectional area of core
1 9518Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design
1 5613As load in a transformer increases, mutual flux linkage in core= A increases B decreases C not change D first increase then decrease
2 8241Are we do it in single transformer with dual primary as 11 KV and 33 KV and constant output as 415 Volts?.
1 3128How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V
2081We have 2 11kv/433v transformers for 2saperate acb for mv panels and 1 bus coupler acb. Suppose I’ll close bus coupler what will happen or it will be share the load. Please suggestion and any modification required.
1 3427
Difference between PowerPlay transformer and power play reports?
All tape of electrical questions Answers tape of motor transformer e.o.t crane
If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?
what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.
Draw the line diagram of diffretial relay connected to transformer?
How to select the earthing transformer,for DELTA TO DELTA TRANSFORMER OR ALTERNATOR SIDE.Pls post your answers and calculation.
Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?
how we arrange the hv side with delta connection in case 33/11kv of transformer.
what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end
i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
How is the percentage impedence of a transformer fixed at design stage???
How a capacitor discharge weld power supply works? what is the use of a pulse transformer?
what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?
what r the checklist while installing 500 kva transformer
