Answer / sagar shinde

1.oxidation and intermittency of operation
2.Formation of hot spots
3.Embrittlement due to grain growth
4.Contamination and corrosion

Answer / n.k.singh.

1.If there is loose connection between terminations of heating elements,hot spot will be made which leads to failure of heater.
2. If reaction takes place between heating element and surrounding atmosphere,i.e. corrosion of heating element which leads to poor heat transfer from heater to load and temperature of element becomes more than the maximum element temperature and heater fails.

Answer / deepak thakur

1)if give connect more voltege than ratede voltege
2)if it heat not convert in proper place.
3)if controlling divice short ckt.
4)if its tharmocuple not fixed in proper place.

Answer / deepak thakur

1)if give connect more voltege than ratede voltege
2)if it heat not convert in proper place.
3)if controlling divice short ckt.
4)if its tharmocuple not fixed in proper place.

what is difference between speed mode and torque mode in motor?? explain in simple words please.

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what is the simple meaning of harmonics?

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EXPLAIN METOD OF IMAGE OF TRANSMISSION LINE/ WHAT ARE ITS PRACTICAL APPLICATION?

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How is Grounding or Earthing achieved in Planes and Automobiles?

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