Which type of DC generator is used for electric welding
purposes and why?
- 1 Answers
- 4943 Views
- I also Faced
- E-Mail Answers
Answer Posted / iamdon
The Differentially compounded DC generator is employed for
welding purposes.The reason is stated as follows.
The Differentially compounded DC generator has very much
drooping characteristic.Thus terminal voltage falls rapidly
with the increase in load current.In welding, the load
resitance is frequently varied by varying arc length.Under such
conditions the value of current should be more or less constant.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 12 Yes | 0 No |
Post New Answer View All Answers
Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.
What is a diode?
what happens in the short circuited secondary transformer,if the resistance of the short circuit is increased gradually?
High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?
where was current transformer protection units used and why??
what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.
how we can do the insulation on secondary of ct explain and so that tan delta will within limit
Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not
what is the IPC ? & what the uses ?
diff. between tension mode & speed mode
What is Harmonics how it is produced and what is the method to control the same
How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9
how external lighting design? please give examples?
generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...
what is the maximum temperature rating of a thhn insulated conductor?
