Answer Posted / deepak

For Voltage, it is +/- 10% &
For Frequence +/- 5%

in indoor type circuit breakers why only the corner breaker trips specially during cold season. What is the reason.

1871

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A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

2007

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why constant voltage transformer should be start without load? and if started then what will happen?

2040

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how can i improve the power factor in domestic (230v)

2055

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please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com

2180

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How to decide CT & PT ratings for a given transmission line carrying some rated voltage?

2324

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Tell me about ur past electrical maintanence job

1877

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What is the normal phase difference between the voltage and the no-load current in a transformer?

1236

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I am inpecting a 10kVA UPS what tests should i do and should i observe?

2212

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we have an energy meter in a capacitor bank panel, So should we consider it's readings as energy consumption on daily basis. (when capacitor bank doesn't have any energy losses)

2405

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What current flows in the transformer primary when its secondary is open?

1243

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How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend

2070

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Plz tell me how we can find that particular company has vacancy or not

2267

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what is different between phase and netural

1974

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What are the material used for resistor?

1107

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