Why colled 440V to 3-phase supply.

0 Answers  

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iii) A shunt motor runs at 70 rad/sec from a 460V supply and takes in an armature current of 100A. Resistors of 2.52 ohms and 1.64 ohms are connected in series with the armature and in parallel with the armature respectively. The field excitation remains direct from the 460V supply but the generated torque is halved. Determine the new running speed. Neglect brush voltage drop. The armature resistance is 0.4 ohms. [15]

1 Answers  

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what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?

0 Answers  

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what type of transformer used in soft ware parks its distribution or power transformer. like 1800 kva

3 Answers  

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What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

5 Answers   AC, Formo Plastic, HBL Power Systems, SECL,

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you are a electrical student, why are you coming for software job.

4 Answers   TCS,

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Rccb trip or not with out neutral connect in three phase welding machine

1 Answers  

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In some countries it is found that an Earthing Transformer is connected at the LV sides of the Transmission and Distribution Substation Transformers.Actually what is the purpose the Earthing Transformer?

1 Answers  

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In a overhead system why the voltage between line &ground is taken for basic comparison ?and in case of underground cables the comparison take only by the voltage between cables?

1 Answers   L&T,

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why current is denoted by I

7 Answers   CTS, GCT, Samtel,

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why star point of motor shall not be grounded?

8 Answers  

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when 40 watts and 60 watts bulb is connected in series, which bulb glows brightly ?

5 Answers  

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