explain why the armature voltage changes when the field rheostat is varied in self excited DC generator

2 Answers  

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How to calculate battery back up time for a 400 AH battery bank installed in telecom shelter for a load of 20 Amps and time taken to fully charge this battery bank?

3 Answers  

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In APFC panel, Why on dealy timer is used in Capacitor controlling circuit?

1 Answers  

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how a synchronous motor is used as a resistor,capacitor and an inductor?

3 Answers   Technocon Services,

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What does the term “voltage regulation” means?

0 Answers  

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Explain working of PIU(Power Interface Unit) in Telecommunication,

7 Answers   ACME, ATC, Bharti, HCL, INDUS, Pace Pharmaceuticals,

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Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

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Going in for a three phase motor or a single phase motor, what factor should be considered for this? For eg., to pump water to certain height and such domestic applications, which motor is suitable?

1 Answers  

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ward lconard control

5 Answers   Bhel,

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IS THE ANY DIFFERENCE B/W GENERATORS & ALTERNATORS

6 Answers  

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Compare salient pole and Hndrical rotor machines.

1 Answers  

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what are the main problems that happen in an emergency light and how to fix them ?

2 Answers  

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