3kW load is supplied by an autotransformer with 0.7 transformation ratio. Conductively transferred power from primary to secondary is 2.1 kW
Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is? Answer : Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to 1. ...
Use of auto-transformer is economical when the transformation ratio is? Answer : Use of auto-transformer is economical when the transformation ratio is near unity. ...
An auto transformer having a transformation ratio of 0.8 supplies a load of 10 kW. The power transferred inductively from the primary to secondary is (a) 2 kW (b) 4 kW (c) 8 kW (d) 10 kW
An Auto-transformer (which has only one winding) may be used as a ______ . (A) Both Step-Up and Step-Down transformer (B) Step-Down Transformer (C) Step-Up Transformer (D) None of these Answer : an autotransformer may used only as step down transformer...
A balanced Delta connected load supplied with 440 V 50 Hz three phase AC supply has R=10 Ohm and L=0.6 mH in is each arm. Calculate line and phase current, active power.
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