When both contractor star & delta is hold in star delta motor ?? So what happen in this case ??
how to stop oil leakage in power transformer.
draw single line diagram of UPS
1 Answers Adani Ports, Equate, IBM, SAP Labs, Socomec, TATA,
where is core-type and shell-type construction suitable for transformers ?
1. which type of transformer connection is preferred in case of power supply transformers? (A) Star/Star (B) Delta/Delta (C) Star/Delta (D) Zig Zag/Star 2. In a power transformer usuall which winding is closer to the core? (A) Primary winding (B) Secondary winding (C) Low Voltage winding (D) High Voltage winding 3. The power factor of a purely inductive load is (A) Zero (B) Lagging (C) Leading (D) Unity.
9 Answers CECRI_Central_Electrical_Research_Institute,
why should be the frequency is 50 hz only why not others like 45, 95 56 or anything , why should we maintain the frequency constant if so why it is only 50
definition of transformer
what happens if sf6ckt breaker gas pressure is high or low about the actual rating of gas pressure(5kg/cm2)
What are the starting currents of different motors and also what are the running currents, and idle currents?
what is the function of choke and starter in a tube light?
Impedance relay is directional relay or non directional relay?
Can we use MCCB with Auxiliary Contact in place of Contactor in a AMF System.
how much up to LT Voltage range?
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