Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?

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What type interview questions ask in Electrical technicians

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What is the Difference between Power Swing and Out of Step?

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what factors to needed while selecting a MCB and MCCB

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Determine the minimum cable size for a 28A single phase final sub circuit originating from the distribution board supplied by three phase submain. The route length of the final sub circuit is 54 m. Assume 1% voltage drop in the consumer's mains. Submain specification: Cable: 50mm2 4 core V75 copper; Route length 42m; Maximum demand 135A per phase

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As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?

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what is Anti-pumping?

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say a transformer is designed for 33/11kv step down with ratio 0.33 for load 1 mva. if am giving 11kv as a input that same transformer what will happen to its o/p voltage. and whether it can be operated for 500kva

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WHY CBCT USE ONLY IN Y PHASE NOT OTHER PHASES

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Why carbon brush used in dc motor also why its not used in ac motor?

2 Answers   RRB,

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In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?

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I want to know what must the CT ratio be on a load of 300A is a 3PH nutral to earh installation?

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