Answer / razaq ali

because electrical heater is constant load with constant
current.
overload relays are used when load current increases due
due to increase in load.

what is the difference between a feeder and a cable?

3 Answers  

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10. THE MOST COMMON TYPE OF THREE PHASE IN UNSYMMETRICAL FAULTS IS ........

6 Answers   SSC,

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what happen if field of dc shunt motor opens? what is function of putting res. in parallel to one phase of 3 phase IM? the power supplied by 5A source in circuit is given by------Watt.

0 Answers  

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what is the different between counterpoise earthing and pipe earthing?

1 Answers  

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What is maximum rating of transformer ?

2 Answers  

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what is the function of closing coil in air circuit breaker?

0 Answers   Fresher,

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working principle of current sensing relay? how its work?

1 Answers  

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which motor is suitable for traction? why?

15 Answers   BCH, KPCL,

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how to improve IR value in HT motors?

3 Answers   ABB, AMW, Macleods,

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Why AC & DC capacitor are use in UPS ??????????????????

0 Answers   Sanghi,

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deisel generators all elcetical calculation formule's

1 Answers  

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why are the likely reasons for bochholz & pressure relays oprate due to a internal fault but not differential relay ?

2 Answers  

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