DC Motors applications used in Lift/Elevators

8 Answers   IOCL, SCS, Usha Martin,

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how to determine kilowatts (real power) is used in energy meter? is it apparent power effect the disk rotation?

1 Answers  

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What is meant by term Back to back in HVDC transmission?

1 Answers   SSC,

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if we have a power factor 0.99 and we add a capacitive bank with it then what happen?

4 Answers   University,

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why current flows from +ve to -ve terminal

7 Answers  

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when is safety goggles use mandatory?

3 Answers  

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what is HVDC, what are advantages over conventional system?

1 Answers  

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Hi, Next week Iam appearing RRB exam for section engineer. So help me to get modal question papers for this position. Iam very thankful to you. Whether question will be fully techanical format or general form. Please give me a details regarding this exam.

0 Answers  

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we have a 2000kva step down transformer at our site. The HT side is charged from 22000V. So the primary current will be 52.48A. So why the HT breaker(SF6 ABB) is rated of 1250Amps ?

2 Answers  

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What is the recommended voltage gap between Live and Earth and ,Earth and Neutral.If these are exceded what is the solution.

2 Answers  

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Everybody Knows What is ACB, VCB but anybody tell me what is ST?

7 Answers  

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In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.

0 Answers  

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