Answer / d b patel

MCCB IS A PROTECTING DEVICE THAT PROTECTS CIRCUIT FROM OVER
LOAD AND SHORT CIRCUIT IT COMES WITH CURRENT SETTING THE
SAME FUNCTION IS OF MCB BUT THERE IS NO SETTING

RCCB USED FOR PROTECTION OF PROPERTY AND PERSON IT DETECTS
LEAKAGE CURRENT AND BREAKS CIRCUIT

RATED CURRENT IS THE CURRENT FOR WHICH EQUIPMENT CAN
CARRYSAFELY WHITHOUT HEATING OF ITS PART ABOVE ALLOWABLE
TEMPERATURE

THERE SHOULD BE SUUFICIENT RESIDUEL MAGNETISM IN POLE OF
MOTOR TO SHOW VOLTAGE IN CASE OF DC MOTOR , OFCOURSE IT CAN
RUN AS GENERATOR

IN AC MOTOR NA BHAI NA

Answer / manoj kumar

MCCB IS A PROTECTING DEVICE THAT PROTECTS CIRCUIT FROM OVER
LOAD AND SHORT CIRCUIT IT COMES WITH CURRENT SETTING THE
SAME FUNCTION IS OF MCB BUT THERE IS NO SETTING

RCCB USED FOR PROTECTION OF PROPERTY AND PERSON IT DETECTS
LEAKAGE CURRENT AND BREAKS CIRCUIT

RATED CURRENT IS THE CURRENT FOR WHICH EQUIPMENT CAN
CARRYSAFELY WHITHOUT HEATING OF ITS PART ABOVE ALLOWABLE
TEMPERATURE

THERE SHOULD BE SUUFICIENT RESIDUEL MAGNETISM IN POLE OF
MOTOR TO SHOW VOLTAGE IN CASE OF DC MOTOR , OFCOURSE IT CAN
RUN AS GENERATOR

Answer / chandrakumar

B IS A PROTECTING DEVICE THAT PROTECTS CIRCUIT FROM OVER
LOAD AND SHORT CIRCUIT IT COMES WITH CURRENT SETTING THE
SAME FUNCTION IS OF MCB BUT THERE IS NO SETTING

RCCB USED FOR PROTECTION OF PROPERTY AND PERSON IT DETECTS
LEAKAGE CURRENT AND BREAKS CIRCUIT

RATED CURRENT IS THE CURRENT FOR WHICH EQUIPMENT CAN
CARRYSAFELY WHITHOUT HEATING OF ITS PART ABOVE ALLOWABLE
TEMPERATURE

THERE SHOULD BE SUUFICIENT RESIDUEL MAGNETISM IN POLE OF
MOTOR TO SHOW VOLTAGE IN CASE OF DC MOTOR , OFCOURSE IT CAN
RUN AS GENERATOR

IN AC MOTOR NA BHAI NA

Answer / zeeshan nazir

in ac motors if we run as a generator millivolts can be
obtain because after sufficient time residual megnatisium is
created in rotor silicon steel bar.try it

Answer / suresh

more than 8 hp

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3 Answers   IOCL,

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The importance of resonant filters in converters?

1 Answers  

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what happens if you swap F1 and F2 connection in the exiter of the generator?

1 Answers  

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Why capacitor bank does not require in DG Set?

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WHAT ARE THE BELT HORMONICS IN AC MACHINE HOW TO REDUCE IT

2 Answers   DRDO,

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what & how to check the lightning arrester

0 Answers   ABC Telecom,

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1) What is difference b/w impedence relay and differential relay? 2) what are substations equipments? 3) what is difference b/w circuit breaker and isolator? 4)what are the types of circuit breakers? 5) which medium is mostlty used in circuit breakers and why it is used?

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What is IDMT? What is the principle

3 Answers  

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how many testing use in power transformer?tell equipment names?

2 Answers   ABB, Electrical,

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I hv a question regarding power factor improvement just after transformer. I request you to reply me plzz. thank you sir. My friend has a small unit of fabrication. in his factory the main load is a welding machine, lathe machine, grinding machine. this load is not continuous type. now our electricity board has installed 16 KVA, 11000/433 V transformer for our factory. In the energy meter (trivector meter) at LV side of transformer, i hv seen power factor value of 0.15 only when only 3 KW load was flowing. Further electricity board has suggested to install 4 KVAR capacitor at LV side after energy meter. Now my question is that if we permanantly install and switch on 4 KVAR capacitor after energy meter, during some load on transformer and also without any load on transformer, wht will be the power factor shown in energy meter?i dont want to get any penalty by electricity board, so plz suggest me if i can permanantly install and switch on the 4 kvar capacitor or not at LV side of transformer just after energy meter? Thank you again and awaiting for ur positive reply soon.

9 Answers  

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Instead of single phase(220), if we apply Phase to phase (R&Y)supply (eg: for lighting fixture). what will be the power formula?

1 Answers  

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