why we use crushed stone in switch yard?

3 Answers  

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if the back emf eqution for dc motor EB=(QPNZ/60A) THEN what is the value of A for PMDC MOTOR OR how can dicide the value of "A"

2 Answers   BSL,

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what are safety measures in /control in diesal engine/ explain them?

0 Answers  

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What is meant by operating sequence of VCB : 0–0.3sec.–CO– 3min.-CO

2 Answers  

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to transmit 30kw of power at 30 km what is voltage required

2 Answers   Anglo Eastern, Merchant Navy, NPCIL,

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State angle criterion.

0 Answers  

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how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

0 Answers   Schneider,

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what is hysteresis loss?

4 Answers   PSU,

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what is the generating transformer?

3 Answers  

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What will happened, if field voltage change with 220 voltage to 110 voltage for a dc shunt motor?

1 Answers  

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Explain the experiment on ward leonard method of speed control of a dc shunt motor.

2 Answers  

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what is phase voltage and line voltage? in line voltage how 415v is obtained?

9 Answers  

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