why the earth terminal in three pin top is longer than rest
of the two terminal and of bigger size?
Answer Posted / sunil ulange hit nidasohi
Because Current always take low resistance path, i.e
Resistance is inversely propotional to Area,
means higher the fault current, lower the resistance,
Higher the conducting area i.e Earth terminal area is higher
than normal pins
R = ql/A, Resistance increases, area decreases
| Is This Answer Correct ? | 17 Yes | 3 No |
Post New Answer View All Answers
which type of motor is used in automatic swing gate
what is negative and zero impedance in 3 phase induction motor ??
How the PF control while running DG set with load
1.how many types of relays? 2.difference between ATS& STS?
what is the meaning of WYE and DELTA in Electric meter?
what is Insulation monitoring device. where it is used? (in switchgear room or control panel or in field equipment)
What are electric motors?
What are the advantages of the three-phase motor over single phase motor?
how does directional relay work incase of ac ?
direction of tarbine& genrator
how test transfomer(3 phase75kva) by megger
what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.
I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.
what is the difference between interconnection and intraconnections in the circuit diagrams
What is cut-off rate?