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sir, my question is that if we start any three phase induction motor with star connection.will be current taken ? please send a formula.
ABB,
4 10891i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.
1 3174Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you
2 4401why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?
3 65331 Ton = ? amperes & power. How much power 1.5 TON split AC consumes in an hour at 17 C , 26 C & 28 C (thermostat' temperature).
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18 451927how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....
1 2115When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?
1 6253Post New Electrical Engineering Questions
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
What is the magnetic field (coil DC ) of Turbo Expander?
plz tel me syllabus and exam date 4 jr executive engg (electrical)
what will happen if synchronous machine rotor fed from single phase ac supply
I NEED RRB SYLABUS FOR JE ELECTRICAL ,PLEASE SEND TO MY E- MAIL ID joo28_eee@yahoo.co.in
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A
pls,send the previous year written test questions.
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
I NEED RRB APTITUDE QUESTIONS AND MODEL PAPER,PLEASE SEND MY E-MAIL joo28_eee@yahoo.co.in
Electrical Engineering
I want single line diagram for AMF & DG syncronizing panel
hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E
PLEASE ANYBODY HAVE ELECTRICAL CIRCUIT DIAGRAM FOR CHMER PULSE CD 60M SPARKING MACHINE.PLEASE MAIL ME SUPRIYAAYYAPPAN@YAHOO.CO.IN.
Draw the line diagram of diffretial relay connected to transformer?
