Answer Posted / ramkumar

ssr drive is working with digital pule like on or off but AC
drive is working mosfet triggering method

why we used dc supply for field in dg set

2387

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how open delta PT works & what is its construction?

2244

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why do we not use equivalent voltage source in negative sequence equivalent ckt.

2042

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How grounding is different than earthings?

1159

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can the measured percentage error during calibration of single phase energy meter be negative?

2406

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What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

2068

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if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side

1854

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what will happen if OLR CT in all phases are short circuted

2184

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what is advertised hop count

1773

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We have a distribution transformer of 750KVA/11kv/440v and an AVR (Servo Stabilizer) of 750KVA on the LT side of distribution transformer. Also we have an ACB of 1200A on the output of distribution transformer (that is on the input of AVR). We want to have an MCCB on the output of AVR. What should be the rating?

2100

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1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?

11181

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1))why we run three phase or three different circuit from a single conduit 2)) why not two circuit of different phase run in same conduit?? and why we run same three cicuit of same phae run in single conduit??

2543

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what is the concept of directional power?

2016

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what is difference between earthingpits,earthing grid & earthing mess?

2504

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Draw torque - speed curve and load curve of induction motor? mark operating point ?

2050

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