How will you Physically differentiate A.C and D.C motor?

10 Answers   BSNL, Polycab,

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What is duty cycle for HT motors? How many start permitted if mentioned as 01 for hot and 02 for cold per duty cycle?

1 Answers   GVK,

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CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

22 Answers   L&T,

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If the damper winding on the rotor of a synchronous motor is removed after starting what will happen?

7 Answers   IOCL,

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How much heat will a 2500 KVA transformer will generate ?

5 Answers  

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what is maximum or Threshold value of current 7 voltage that a common man can withstand

1 Answers  

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why threre are two parallel lines in transformer's symbol?

11 Answers   NTPC,

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1. what is difference between VCB and ACB.how its works please explian.

6 Answers   ABB, Accenture, HP, Minda, Mother Dairy, Satyam Pharma,

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why dhyedration test required for transformer oil once in a year

1 Answers  

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what is rotor earth fault protection scheme in hydro generator & what is dc field flashing ?

2 Answers   NHPC,

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working principle of AC Servo Motor with its construction

0 Answers   TATA,

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HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

6 Answers   DLF,

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