Answer / guest

according to the equation N α V-Ia*Ra as load increases
armature current Ia increases hence voltage drop therefore the
speed.

How do you think they do earthing or grounding in ships and aeroplanes?

9 Answers  

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what is skin effect? why is it absentin dc system

22 Answers  

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what is power system.........?

1 Answers  

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difrence bitwin boost charge and float chargeing

1 Answers  

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Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

0 Answers  

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There are a trformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

0 Answers  

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In protection core of a C.T. why Knee pont voltage is greater than SLV and in metering its viceversa?

2 Answers  

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why the transformers are rated in kv not kw?

6 Answers   L&T,

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how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

0 Answers   Adani, Mahaveer,

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what is the working principle of smoke detector in fire alarm system

2 Answers   Vijaya Bank,

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What is the min.& max distance between two earth spikes is required for measuring earth resistance of an earth pit? Is the manufacturer of Earth tester decides this? Pls explain.

3 Answers   ABB, HAL,

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TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

0 Answers   Bhel, NTPC,

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