What is the operational principle of direct current current transformer and direct current potential transformer?if possible plz reply with ckt. diagram.

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How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

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how to calulate transformer secodary fault A?

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What is meant by positive and negative feedback?

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What is the effect of earth capacitance

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what is power factor

4 Answers   UltraTech,

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In an ideal transformer no load primary current I0 A lags behind V1 by 90 degree B is in the phase with V1 C leads V1 by 90 degree D lags V1 by 45 degree

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how the B-H loop obtain under the static condition

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In IDMT RELAY the term minimum (M) indicates what?

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Hi,i want to appear for IES (EEE),can any one plz help me how to apply and how to prepare

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what is the difference between inverter and ups & what is the earth resistance for ups , if its high why so

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Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com

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