Answer Posted / vivek kumar
at no load the current passing through the field is minimum
and almost zero ,so the flux at the field will be also
almost zero and we know that the speed is inversly
perpotional to the flux in the field so due to almost zero
flux the speed will be maximum and almost infinite at the
starting and it will cause damege of the beerings armatures
shaft due to sudden break in its inertia.
| Is This Answer Correct ? | 44 Yes | 5 No |
Post New Answer View All Answers
What the main causes of transient interruptions on Over-Head Distribution Lines?
Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?
what is the series parallel connection of capacitors? and how can we use these application in three phase motors for controlling torque?
Explain bypass capacitor?
What is the comparison of PILC and XLPE cable
How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?
What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)
Write the current equation in series RLC circuits.
what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
What is method of calculating the fault current for a MDB, 50KW, 3PH, 415V, 50HZ?
importance of reactive power management
Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.
What is distance between electrical panel to land ?
Which Class insulation is prefered for the sandwich Busducts ? Why?