Answer / zimba samuel

By using the neutral compensating transformer

what the reson to use phase shift( angle) like (dyn11,Dd5 or Dy0)are usedin power and transsmison line

1 Answers  

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what is the working principle of Brushed alternator ? without exictation how we can give dc supply to rotor ?

1 Answers  

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What is the use of core in the transformer?

19 Answers  

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Initially motor starts with star connection ,after few timing changes to delta connection, why the motor should run continously in star connection,it gives high torque & low current?

3 Answers  

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why we use 630mm single core cable for transformer secondary side and why two neutral cable

0 Answers   Technicare,

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what is diode? and what it is used for ?

3 Answers  

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difference between buscoupler & bussection?

1 Answers  

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what is single turn and multiturn encoder ? Can single turn encoder be used to show rpm of a motor(on shaft) ? Plz explain in brief .abanirout@gmail.com

1 Answers  

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oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer safe to be operated . The working voltage is 11 kv

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Is there any Electrical supervisor license which gives permit to work whole India rather than individual state??

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what's float charger and boost charger? why it's used?

2 Answers   APCPDCL, PTCL, Rolls Royce, Siemens,

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need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

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