Answer / dinesh as pritech

Star delta starter ,
motor is starting current is 3 times of rated current.because
it is used to reduce the starting current.

Answer / msivakailash85

if motor connected in star then high torque and power
if motor connected in delta then low starting current(cable
size also less)

Answer / pillay

There is no advantage.If the motor is designed to operate at
star connection than you must operate as such. like wise
if it is designed to operate on delta connection then
you must connect in delta.If the motor is operated with
the other connection than it may cause failure of the
motor.

3) How earthing is done? How it measured? Write the method for earthing? How the earth resistance is kept low?

1 Answers   Innovative Energy,

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What is the difference between Derived earth Fault and measured earth fault.How it works.

1 Answers  

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what is meant by motor startup supervision & motor load jam protection ?

0 Answers   ABB,

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when ELCB breaks the circuit than INVERTER auto-connect the circuit to the battery than how can the operetor is safe??

1 Answers  

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1. Design a counter which counts 0, 4, 8, 2, 6, and repeats using: 1.a using JK flip flops 1.b using T flip flops 1.c using D flip flops

0 Answers  

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what is the use of back emf?

1 Answers  

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how to calculate the knee point voltage of current transformer?

2 Answers  

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WHY CBCT USE ONLY IN Y PHASE NOT OTHER PHASES

0 Answers  

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what is an S.C.R. and how do they work?

4 Answers   GE,

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What is the difference between IGBT and TRIAC?

3 Answers  

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what is transformer

5 Answers   Aegis,

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what happens when a power transformer neutral earthing broken???

11 Answers   MacLellan,

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