What would be the ratio of a Delta-Wye tranformer having 48000 volts phase to phase on the primary and 4160 volts phase to phase on the secondary?

5 Answers  

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what is the difference between bus-coupler and bus-riser

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What will happen if the d.c. Shunt motor opened accidentally running on no-load has its shunt field winding?

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why we use mostly 3-phase but not 4-phase and 5-phase what is the difference between them

1 Answers  

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What is the need for checking knee point voltage for CT's?

1 Answers  

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In Swinburne's Test on D.C.machines, why the efficiency is more when the machine runs as generator than when it runs as motor???

6 Answers   College School Exams Tests, GE, MVR, Practical Viva Questions,

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if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer

0 Answers  

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What is the difference b/w RMU & substation

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Weather power factor correction needed for synchronous motors?

1 Answers  

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how to testing the AC 3 phase motor? and what is the test procedure & kits required for testing?

3 Answers  

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what is vibration?

2 Answers  

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An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor frequency at maximum torque point is A 3.33% B 4.44% C 5.55% D 6.66%

1 Answers  

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