why we are not giving the zone 1 trip command to the master trip relay

0 Answers  

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types of motor starter

5 Answers  

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tell me the operation of ELCB. How it detects a fault?

4 Answers  

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waht is the working principle of saft starter & what is the difference in vfd & saft starter

2 Answers   Cipla,

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what kind of motors are used in the winders of coal field?and what are the various methods of it's speed control?

1 Answers   Monnet,

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Explain the functioning of diode?

0 Answers  

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PIU how does work?

0 Answers  

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Why electrons flow only one direction in semiconductors. why can not flow both directions

1 Answers  

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a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5

0 Answers  

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In a three-phase full converter, every SCR conducts for a.60deg. b. 120deg. C.180deg. d.90deg

3 Answers  

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EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.

0 Answers  

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what is the difference between 2 way and 4 pole selector switch???

0 Answers   Allied Group,

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