Answer Posted / j.prabhakaran

The amount of no load current can be only calculated if we
knows the value of core loss of transformer and capacitance
current across the circuit.....

What are the common sources of energy?

1069

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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

1938

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what is draiv work

1881

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why single phase to grd test in HV cable?why not 2 phase at a time?

2274

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What is the difference between earth fault protection of motor feeder with CBCT and Without CBCT ?

2903

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WHAT IS SPEC OF CLEANROOM MOTOR AND LIGHT FITTINGS?

2298

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How to design pavement quality concrete by using C.R.C.P Method

1732

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What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

2352

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State and define norton’s theorem?

1233

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What is the drawback of class b amplifier?

1151

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in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?

2156

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A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?

2419

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What is the purpose of stablization resistor in high impedance bus bar protection

1988

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Define branch?

1067

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Write down the name of 2 lady Bir Pratin of Bangladesh

1958

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