Answer Posted / dhivya

induction motor is under excited and runs only in subsynchronous speed that is why it has lagging pf

what is earth pit , how we can measured it, what earth rods reference

2661

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if the number of poles generated in stator and rotor side of an induction motor are different then what will happen and why?

1939

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should %impedance be high or low in a power transformer? if so why?

1998

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why high speed tripping relay will be used in tripping circuit why not normal relay

1427

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HELLO SIR, IAM PREPARING HPCL EXAMS. SO PLS SEND MATERIAL OF HPCL ELECTRICAL ENG..TO VIJAY_8888@YMAIL.COM

1922

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Briefly define and explain the following different types of Pulse Amplitude Modulation (PAM) with some examples. i) 2-PAM ii) 4-PAM iii) 8-PAM iv) 16-PAM v) Quadrature Amplitude Modulation (QAM)

2209

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10 Mtr Hight of Lighting Arrestar how much area coverd??

2553

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why 3 phase is converted into 2 phase using electronics circuit why not 2 phases are diresctly putted from the 3 phase transformer??

2246

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how many single tension hardware are required on a double circuit transmission tower?

1982

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write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

2618

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Which motor connection is preferable star-delta or delta-star?

1125

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A 3 phase transformer's (Y-Y) Y and B phase is (Y and B connection not broken) broken from neutral and R and Nutral connection is ok, what will be the relay tripping and why

2013

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calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

3624

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explain all the classes with example

2018

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What is voltage divider rule?

1241

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