what is the function of commutator in dc motor?
Answer Posted / bhagya
sir actually the function of the motor is to convert
electrical to mechnical energy but wat is the purpose of
commutator in dc motor.if we ll not give ac supply
| Is This Answer Correct ? | 1 Yes | 1 No |
Post New Answer View All Answers
Installation method of self treated earth electrode.
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
1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
What is a advantage of Self Reset Lockout ? On Fault breaker get trip & fault no longer exist then self reset lockout how inform us?
Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir
IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.
How many double suspension hardware fittings are required on a double circuit transmission tower?
why do we put a transformer on soak before loading it
How to calculate the input cable rating for 10kva ups (3phase input and single phase output and also 3phase output, battery rating 65Ah)provide the formula also.thnx
how to calculate the capacitor to maintain power factor?
How does HT work & Voltage required?
what are the necessary basic electrical topics to learn for mechanical engineer to deal practical problems.
i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?
What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??